Practice Test #1 Questions - answers at end

                             Important Instructions

     1. Read all the instructions and both sides of all pages.
     2. Manage your time when answering questions on this test.
        Answer the questions you know, first.

________________________________________________________________________________

                         Multiple Choice - 177 Questions
This is a practice test containing many practice questions.  The real test will
contain some questions similar to these.  There are probably many more questions
in this practice test than there will be time for in the real test.  The real
test will have approximately one question per minute.

The real test may have some questions unlike anything given here.  Knowing the
concepts behind the questions is necessary; memorizing these specific answers
won't help.

The answers to this test are in the Answer Key on the last page(s).

1.   What is the output on your screen of this shell command line in an empty
     directory?   touch 1 2 3 .a .ab .abc ; echo [.]*
     a. no output on screen
     b. . .. .a .ab .abc
     c. an error message from echo saying [.]* does not exist
     d. [.]*
     e. .a .ab .abc

2.   What would you see if you typed this command:   cat /users
     a. The contents of your directory named users
     b. The contents of your subdirectory named users
     c. The contents of the file users located in the root directory
     d. The contents of the file users located in the parent directory
     e. The contents of the file users located in your home directory

3.   If directory /a/b contains these four three-character file names: .aa, .ab,
     .a?, .a*, then what is the output on your screen of the following bash
     shell command line:  echo /a/b/???
     a. no output on screen
     b. /a/b/.a?
     c. /a/b/???
     d. /a/b/.aa /a/b/.ab
     e. /a/b/.aa /a/b/.ab /a/b/.a? /a/b/.a*

4.   If file a contains 20 lines, and file b contains 30 lines, then how many
     lines are in file out after this sequence of bash shell commands:
        cat a b >c ; head c >c ; sort a b c >out
     a. 100
     b. no lines (empty file)
     c. 60
     d. 50
     e. 30

5.   Which command shows the name of the current computer:
     a. users
     b. hostname
     c. ifconfig
     d. who
     e. w

6.   In an empty directory, what appears on your screen after this bash command
     line?  touch a ; ls | wc -l
     a. 0
     b. no output on screen
     c. 3
     d. 1
     e. 2

7.   How can you ask the bash (Linux) shell to complete commands or file names
     for you?
     a. You can type the first part of the command or file name and press the
        TAB key.
     b. Type [CONTROL]-[C] and the shell will present a menu of commands.
     c. Push key F1 and the system will present a menu of commands.
     d. Type [CONTROL]-[D] and the shell will present a menu of commands.
     e. You can type the first part of the command or file name and press the
        ALT key.

8.   What appears on your screen after this bash shell command line?
        echo xx >z ; ls z > wc
     a. 2
     b. no output on screen
     c. 3
     d. 1  1  2
     e. 1  1  3

9.   What is the output on your screen of the following sequence of commands:
        echo hi >wc ; wc wc >hi ; cat hi
     a. hi
     b. 0 0 0 wc
     c. 1 1 3 wc
     d. no output on screen
     e. 1 1 2 wc

10.  If my current directory is /usr, which of these pathnames is equivalent to
     the pathname /usr/x/y/z?
     a. x/./y/z
     b. ./usr/x/y/z
     c. /x/y/z
     d. ../usr/y/z
     e. ../x/y/z

11.  What is in the file out after this command sequence:
        echo hi >x ; echo ho >>x ; cp x y >out
     a. hi followed by ho
     b. ho
     c. no such file (nonexistent)
     d. hi
     e. nothing - empty file - no data

12.  If /etc/passwd is a file name, which pathname always leads to the same
     file?
     a. /../etc/passwd
     b. /etc/passwd/../..
     c. ./etc/passwd
     d. /etc/passwd/.
     e. /etc/../../passwd

13.  If file foo contains nine lines, each of which is the one-digit line number
     of the line in the file, (1 through 9), what is the output on your screen
     of this command:  cat foo foo | sort | tail -4 | head -1
     a. 1
     b. 4
     c. 8
     d. no output on screen
     e. 6

14.  In an empty directory, how many arguments are passed to the rm command in
     this bash command line?   date >a1 ; touch a2 ba ca >all ; rm a*
     a. 4
     b. 2
     c. none
     d. 1
     e. 3

15.  If cow is a sub-directory that contains only the file dog, what happens
     after this command:   mv cow/dog cow/././cat
     a. the command fails because the name cat does not exist
     b. there is a second copy of the file dog in the file named cat
     c. the command fails because the name cow/././cat does not exist
     d. the directory cow now contains only a file named cat
     e. the directory cow is now empty

16.  In an empty directory, how many arguments are passed to the rm command in
     this bash command line?   touch a a1 a2 ba ca ; rm a*
     a. 2
     b. 1
     c. 3
     d. 4
     e. none

17.  If my current directory is /etc, which of these pathnames is equivalent to
     the file name /etc/passwd?
     a. ../passwd
     b. ./etc/passwd
     c. ./passwd
     d. /passwd
     e. ../etc/passwd/.

18.  Which of these statements is true?
     a. Unix commands can be entered in upper-case or lower-case letters; they
        are equivalent.
     b. To indicate End-of-File (no more input), type [CONTROL]-[E].
     c. Unix commands must be entered in lower-case letters.
     d. To erase an entire line of typing, type [CONTROL]-[E].
     e. You can only login to Unix once per userid; you cannot be logged in to
        the same machine twice.

19.  Given an existing file of yours named wc, what is the output on your screen
     of this sequence of three shell commands:
        echo hi >wc ; sort wc >wc ; cat wc
     a. 0 0 0 wc
     b. no output on screen
     c. 1 1 2 wc
     d. 1 1 3 wc
     e. 2 2 4 wc

20.  What appears on your screen after this bash shell command line?
        echo hi | wc -c
     a. no output on screen
     b. 1
     c. 3
     d. 2
     e. 0

21.  If my current directory is /home, which of these pathnames is equivalent to
     the pathname /home/a/b/c?
     a. ./home/a/b/c
     b. ../a/b/c
     c. ../home/b/c
     d. ../home/a/b/c
     e. /a/b/c

22.  What appears on your screen after this bash shell command line?
        echo hi >ls ; cat ls > wc
     a. no output on screen
     b. ls
     c. 1  1  3
     d. 1  1  2
     e. hi

23.  What is the output on your screen of this shell command line in an empty
     directory?   touch .1 .2 .3 4 5 6 ; echo .*
     a. . .. .1 .2 .3
     b. .*
     c. an error message from echo saying .* does not exist
     d. .1 .2 .3 4 5 6
     e. 4 5 6

24.  Which of the following shell command lines displays all the names in the
     current directory that are exactly three digits long (and no others)?
     a. echo [0-9][0-9][0-9]
     b. echo ???
     c. echo [1-3][1-3][1-3]
     d. echo [?][?][?]
     e. echo [3][3][3]

25.  What is in file cow after running this bash shell command line?
        echo one two >cow three
     a. no output (empty file)
     b. one two cow three
     c. echo one two
     d. one two
     e. one two three

26.  In the output of the command ls -a, the one-character name . signifies
     what?
     a. A name with an unprintable character.
     b. A current file.
     c. A name that is hidden.
     d. The current directory.
     e. The parent directory.

27.  If I am in my home directory named /home/idallen and empty is an empty sub-
     directory, what is true after this command line:
        touch ./pig ; mv ./empty/../pig ../idallen/cow
     a. the directory  empty  now contains only a file named cow
     b. the command fails because path ./empty/../pig does not exist
     c. there is a second copy of the file pig in the file named cow
     d. the directory  empty/..  now has a file named cow in it
     e. the command fails because path ../idallen/cow does not exist

28.  Which command pipeline outputs the count of the number of userids
     containing the string allen that are currently logged in?
     a. grep allen | wc | who
     b. who | grep allen | wc
     c. grep allen | who | wc
     d. who | wc allen | grep
     e. who | grep | allen wc

29.  Which command line displays all the non-hidden names in the current
     directory that contain the letter x (and no others)?
     a. echo ?x?
     b. echo x*
     c. echo *x
     d. echo *x*
     e. echo [x]

30.  If file twenty contains 20 lines, and file thirty contains 30 lines, then
     how many lines are output on your screen by this command:
        tail thirty | cat twenty
     a. 20
     b. no lines (no output)
     c. 30
     d. 50
     e. 21

31.  What is the output on your screen of this successful command sequence?
        cd /tmp ; mkdir foo ; mkdir bar ; pwd
     a. /bar
     b. /tmp/foo
     c. /tmp/bar
     d. /tmp/foo/bar
     e. /tmp

32.  If directory cow contains only these four three-character file names: .AA,
     .A1, .BB, .B., then what is the output on your screen of this command line:
        echo cow/*
     a. cow/*
     b. cow/.B.
     c. cow/.AA cow/.A1 cow/.BB cow/.B.
     d. no output on screen
     e. cow/.AA cow/.A1 cow/.BB

33.  Which command line lists all possible utilities available for compiling
     programs?
     a. man * | grep compile
     b. man -k compile
     c. grep compile /etc/*
     d. grep /etc/* compile
     e. man compile

34.  Which command pipeline outputs the count of the number of pathnames
     (including all subdirectories) that lie under the /etc directory?
     a. man /etc ; wc
     b. dir /etc | count
     c. ls /etc ; wc
     d. find /etc | wc
     e. ls /etc | wc

35.  When doing an ls -a, the output pathname that is a double dot (..)
     signifies what?
     a. A hidden file.
     b. The root directory.
     c. The current directory.
     d. The parent directory.
     e. A file or directory with double links.

36.  What is the output on your screen of this shell command line in an empty
     directory?   touch 1 .1 23 .23 456 ; echo [12]*
     a. [12]*
     b. 1 .1 23 .23
     c. 1 23
     d. an error message from echo saying [ab]* does not exist
     e. 1 .1 23 .23 456

37.  What is in the file cow after this command line:
        echo a >a ; echo b >b ; mv a b >cow
     a. nothing - empty file - no data
     b. a
     c. no such file (nonexistent)
     d. a followed by b
     e. b

38.  If file x contains 10 lines, and file y contains 20 lines, then how many
     lines are in file cat after this sequence of bash shell commands:
        sort x y >z ; tail -5 y >y ; sort x y z >cat
     a. 40
     b. no lines (empty file)
     c. 50
     d. 45
     e. 60

39.  When doing an ls -a, the output pathname that is a double dot (..)
     signifies what?
     a. The root directory.
     b. A hidden file.
     c. The current directory.
     d. A pathname with double links.
     e. The parent directory.

40.  Given an existing file of yours named /a/b/x, what is the output on your
     screen of this sequence of three shell commands:
        echo hi >/a/b/x ; wc /a/b/x >/a/b/x ; cat /a/b/x
     a. 1 1 3 /a/b/x
     b. 1 1 1 /a/b/x
     c. 1 1 2 /a/b/x
     d. no output on screen
     e. 0 0 0 /a/b/x

41.  What is the output on your screen of this shell command line in an empty
     directory?   touch x .a .ab .cde .fghi ; echo .??*
     a. .??*
     b. an error message from echo saying .??* does not exist
     c. .ab .cde .fghi
     d. . .. .a .ab .cde .fghi
     e. .cde .fghi

42.  What is the output on your screen of this successful command line?
        cd /home/myhome ; mkdir foo ; mkdir bar ; pwd
     a. /home/myhome/foo
     b. /home/myhome
     c. /bar
     d. /home/myhome/foo/bar
     e. /home/myhome/bar

43.  If file nine contains nine lines, each of which is the one-digit line
     number of the line in the file (1 through 9), what is the output on your
     screen of this command:  sort nine nine nine | tail -3 | head -1
     a. 7
     b. 7 7 7
     c. 1 1 1
     d. 8
     e. 9

44.  What is the output of this sequence of three shell commands:
        echo x >abc ; ls >abc abc ; wc abc
     a. 0 0 0 abc
     b. 1 1 2 abc
     c. 1 1 4 abc
     d. 1 1 3 abc
     e. no output on screen

45.  What is the output on your screen of this shell command line in an empty
     directory?   cat *
     a. .
     b. an error message from cat saying * does not exist
     c. no output on screen
     d. *
     e. .   ..

46.  Which of the following shell command lines displays only the names in the
     current directory that are exactly three alphabetic letters long?
     a. echo [a-zA-Z][a-zA-Z][a-zA-Z]
     b. echo ***
     c. echo [0-3][0-3][0-3]
     d. echo [?][?][?]
     e. echo ???

47.  How many lines are in file out after this bash shell command line?
        echo hi >dog >cat >out
     a. no such file (file does not exist)
     b. nothing - empty file - no data
     c. 2
     d. 1
     e. 3

48.  How many lines are in the file bar after this command sequence:
        echo hi >x ; echo ho >>x ; cat x x >bar
     a. nothing - empty file - no data
     b. 2
     c. 4
     d. 1
     e. 6

49.  In an empty directory, what appears on your screen after this bash command
     line?  touch a ; ls >wc -l
     a. 1
     b. 3
     c. 0
     d. no output on screen
     e. 2

50.  If you type the command  cat
     which of the following key sequences will send an EOF and take you
     immediately back to the command prompt?
     a. [CTRL-C]
     b. [CTRL-L]
     c. [CTRL-U]
     d. [CTRL-R]
     e. [CTRL-D]

51.  In an empty directory, how many words are in file cow after this bash shell
     command line?   touch dog dog cat ; ls >cow
     a. 4
     b. no output (empty file)
     c. 1
     d. 2
     e. 3

52.  If file nine contains nine lines, each of which is the one-digit line
     number of the line in the file (1 through 9), what is the output on your
     screen of this command:   sort nine nine nine | tail -3 | head -1
     a. 9
     b. 8
     c. 7
     d. 1 1 1
     e. 7 7 7

53.  Which of the following VI/VIM key sequences will move the entire line on
     which the cursor resides to after the line that follows it (i.e. it would
     move line 5 to be line 6 and line 6 would become line 5)?
     a. ddP
     b. DDP
     c. :dp
     d. DDp
     e. ddp

54.  In an empty directory, how many arguments are passed to the cat command in
     this bash command line?   touch a1 a2 ac ba .a ; cat a*
     a. 1
     b. 3
     c. none
     d. 4
     e. 2

55.  Which of the command lines below can generate a non-empty file?
     a. cat /a/b /a/b /a/b >/a/b
     b. wc -l /a/b >/a/b
     c. head -5 /a/b >/a/b
     d. sort /a/b >/a/b
     e. tail /a/b >/a/b

56.  What is the output on your screen of this shell command line in an empty
     directory?   touch .a .b .c ; echo .*
     a. .*
     b. .a .b .c
     c. an error message from echo saying .* does not exist
     d. . .. .a .b .c
     e. no output on screen

57.  What is the output on your screen of this shell command line in an empty
     directory?   touch .a .b .c ; echo .??*
     a. .??*
     b. .a .b .c
     c. an error message from echo saying .??* does not exist
     d. . .. .a .b .c
     e. no output on screen

58.  Which command line below never shows any lines from inside the file cow?
     a. wc -l cow
     b. head -1 cow
     c. tail -8 cow
     d. sort -r cow
     e. grep pattern cow

59.  If you type the command  sleep 60
     which of the following key sequences will interrupt it and take you
     immediately back to the command prompt?
     a. [CTRL-C]
     b. [CTRL-L]
     c. [CTRL-U]
     d. [CTRL-R]
     e. [CTRL-D]

60.  Which command line below does not show any lines from inside the file dog?
     a. head -3 dog
     b. less dog
     c. ls dog
     d. sort -r dog
     e. tail -8 dog

61.  How many lines are in the file out after this command sequence:
        echo hi >out ; echo ho >out ; cat out out >out
     a. 6
     b. nothing - empty file - no data
     c. 2
     d. 3
     e. 1

62.  What is the output on your screen of this command sequence:
        echo dog >one ; echo cow | head -2 one
     a. dog
     b. cow followed by dog
     c. cow
     d. an error message
     e. dog followed by cow

63.  What is in file out after running this bash shell command line?
        echo a >out b c
     a. echo a
     b. b c
     c. a b c
     d. no output on screen
     e. a

64.  If file foo contains nine lines, each of which is the one-digit line number
     of the line in the file (1 through 9), what is the output on your screen of
     this command:  cat foo foo | sort -r | head -4 | tail -1
     a. 6
     b. 7
     c. 8
     d. 5
     e. 9

65.  If my current working directory is /home, and my home directory is
     /home/xx, which of the of the following commands copies the Unix password
     file into my home directory under the name foo?
     a. cp ../../etc/passwd /xx/foo
     b. cp xx/../../etc/passwd xx/foo
     c. cp ../home/xx/../etc/passwd ./xx/./foo
     d. cp xx/../etc/passwd ../home/xx/foo
     e. cp ../etc/passwd ../xx/foo

66.  What command shows all the lines in file foo that contain the string group?
     a. grep group foo
     b. grep group ; foo
     c. cat foo ; grep group
     d. grep foo group
     e. cat foo | wc group

67.  What is in file two after running this command line?
        echo one >two three four
     a. one three four
     b. three four
     c. one
     d. echo one
     e. empty file (no data)

68.  In an empty directory, how many words are in file out after this bash shell
     command line?   touch 1 2 3 2 1 ; ls >out
     a. 4
     b. 5
     c. 6
     d. no output (empty file)
     e. 3

69.  Which command line lists all possible utilities available for compiling
     programs?
     a. man * | grep compile
     b. grep /etc/* compile
     c. man compile
     d. grep compile /etc/*
     e. apropos compile

70.  If /bin/bash is a file name, which pathname always leads to the same file?
     a. ./../bin/bash
     b. /bin/../bash
     c. /../bin/./bash
     d. /bin/bash/.
     e. /bin/bin/../bash

71.  What is in file out after running this bash shell command line?
        echo 2 3 >out 3 0
     a. 2 3
     b. 2 3 3 0
     c. no output (empty file)
     d. 2 3 >out 3 0
     e. 2 3 0

72.  If my current working directory is /home, and my home directory is
     /home/me, which of the of the following commands copies the Unix password
     file into my home directory under the name foo?
     a. cp ../../etc/passwd /me/foo
     b. cp ./me/../etc/passwd ../home/me/foo
     c. cp ../etc/passwd ../me/foo
     d. cp me/../../etc/passwd me/foo
     e. cp ../home/me/../etc/passwd ./me/./foo

73.  Which of these commands always returns you to your account home directory?
     a. cd
     b. cd /home
     c. cd ..
     d. cd /home/..
     e. cd home

74.  Which command sequence below outputs only lines 10-15 of the Unix password
     file?
     a. head -15 /etc/passwd | tail -5 /etc/passwd
     b. head -10 /etc/passwd | tail -15 /etc/passwd
     c. tail -10 /etc/passwd | head -15 /etc/passwd
     d. head -15 /etc/passwd | tail -6
     e. tail -15 /etc/passwd | head -10

75.  If file nine contains nine lines, each of which is the one-digit line
     number of the line in the file (1 through 9), what is the output on your
     screen of this command:   cat nine nine | sort -r | head -4 | tail -1
     a. 5
     b. 7
     c. 9
     d. 8
     e. 6

76.  What is the output on your screen of this shell command line in an empty
     directory?   touch .a .b .c ; echo [.]*
     a. . .. .a .b .c
     b. .a .b .c
     c. an error message from echo saying [.]* does not exist
     d. [.]*
     e. no output on screen

77.  What is the output on your screen of this shell command line in an empty
     directory?   echo *
     a. *
     b. ..
     c. .   ..
     d. no output on screen
     e. .

78.  What appears on your screen after this bash shell command line?
        echo hi >a ; ls a > wc
     a. no output on screen
     b. 2
     c. 1  1  3
     d. 3
     e. 1  1  2

79.  In the output of the command ls -a, a dot that begins a name signifies
     what?
     a. The current directory.
     b. A current file.
     c. A name that is hidden.
     d. The parent directory.
     e. A name with an unprintable character.

80.  If file foo contains ninety-nine lines, each of which is the two-digit line
     number of the line in the file (01 through 99), what is the output on your
     screen of this command:   sort -r foo foo | tail -4 | head -1
     a. 96 96
     b. 96
     c. 02
     d. 98
     e. 04 04

81.  What is the possible output on your screen of this command line:
        echo wc >date ; sort date >date ; cat date
     a. 1 6 29 date
     b. 1 6 28 date
     c. Wed Jan 26 13:00:00 EST 2005
     d. no output on screen
     e. wc

82.  If you type the command  sort
     which of the following key sequences will send an EOF and take you
     immediately back to the command prompt?
     a. [CTRL-D]
     b. [CTRL-R]
     c. [CTRL-L]
     d. [CTRL-C]
     e. [CTRL-U]

83.  If /etc/passwd is a file name, which pathname always leads to the same
     file?
     a. /etc/./etc/../passwd
     b. ../etc/passwd
     c. /etc/../etc/passwd
     d. /etc/passwd/.
     e. ./etc/passwd

84.  In an empty directory, how many words are in file pig after this command
     line?  touch pig pig ; ls >pig
     a. 4
     b. 2
     c. 1
     d. empty file (no data)
     e. 3

85.  In an empty directory, how many arguments are passed to the wc command in
     this command line?   date >o1 ; touch a1 b2 out >o1 ; wc o*
     a. 4
     b. 2
     c. 1
     d. 5
     e. 3

86.  What appears on your screen after this bash shell command line?
        echo cow | wc
     a. 3 1 1
     b. 1 3 1
     c. 1 1 4
     d. 1 1 3
     e. no output on screen

87.  If /etc/passwd is a file name, which pathname always leads to the same
     file?
     a. /etc/passwd/./.
     b. /./../etc/./passwd
     c. ././etc/passwd
     d. /etc/passwd/../..
     e. /etc/../../passwd

88.  What is the output of this sequence of this command sequence:
        echo hi >hi ; head hi >hi ; wc hi
     a. 1 1 3 hi
     b. 1 1 2 hi
     c. no output on screen
     d. 2 2 4 hi
     e. 0 0 0 hi

89.  Which command line takes the list of users currently logged in to the
     machine and displays just the one line containing the userid that sorts
     first in the alphabet?
     a. sort | who | head -1
     b. sort who | tail -1
     c. head -1 who | sort
     d. who | sort -r | tail -1
     e. head -1 sort who

90.  In an empty directory, how many arguments are passed to the cat command in
     this bash command line?   touch a1 a2 ba ca ; cat a*
     a. 3
     b. 2
     c. 1
     d. none
     e. 4

91.  If file nine contains nine lines, each of which is the one-digit line
     number of the line in the file (1 through 9), what is the output on your
     screen of this command:   cat nine nine | tail -5 | head -1
     a. 9
     b. 6
     c. 8
     d. 7
     e. 5

92.  What is in the file named file after this command sequence:
        echo a >c ; echo b >>c ; mv c d >file
     a. b
     b. a
     c. nothing - file is empty - no data
     d. a followed by b
     e. no such file (nonexistent file)

93.  Which of the following statements is true about this shell command line:
        >/a/b/c cat /a/b/d
     a. The command is always invalid.
     b. The command /a/b/c sees two arguments.
     c. The command cat sees two arguments.
     d. The command cat sees only one argument.
     e. The command /a/b/c sees only one argument

94.  If I am in my home directory named /home/ian and mt is an empty sub-
     directory, what is true after this command line:
        touch ../ian/cat ; cp ./mt/../cat ./mt/../dog
     a. there is a second copy of the file named who in the file dog
     b. the command fails because the path ./mt/../cat does not exist
     c. the directory mt now contains two files
     d. the directory mt is still empty
     e. the directory mt now has a file named dog in it

95.  If you type the command  head
     which of the following key sequences will send an EOF and take you
     immediately back to the command prompt?
     a. [CTRL-R]
     b. [CTRL-U]
     c. [CTRL-C]
     d. [CTRL-L]
     e. [CTRL-D]

96.  What command shows all the lines in file /etc/group that contain the string
     idallen?
     a. cat /etc/group | wc idallen
     b. grep idallen /etc/group
     c. grep /etc/group idallen
     d. cat /etc/group > grep idallen
     e. grep idallen >/etc/group

97.  What is the output on your screen of this shell command line in an empty
     directory?   touch 1 2 3 .a .b .c ; echo .??*
     a. an error message from echo saying .??* does not exist
     b. .??*
     c. . .. .a .b .c
     d. . .. 1 2 3 .a .b .c
     e. .a .b .c

98.  If you type the command  grep pattern
     which of the following key sequences will send an EOF and take you
     immediately back to the command prompt?
     a. [CTRL-D]
     b. [CTRL-L]
     c. [CTRL-U]
     d. [CTRL-C]
     e. [CTRL-R]

99.  Which of the command lines below can generate a non-empty file?
     a. grep pattern file >file
     b. cat file >file
     c. sort -r file >file
     d. ls -l file >file
     e. head -1 file >file

100. What text is output by this bash shell command sequence:
        echo dog >out ; echo cat | sort out
     a. out
     b. cat followed by dog
     c. dog
     d. cat
     e. dog followed by cat

101. If file /a/b contains 99 lines, each of which is the two-digit line number
     of the line in the file (01 through 99), what is the output on your screen
     of this command:  sort /a/b /a/b | tail -4 | head -1
     a. 98
     b. 04 04
     c. 96
     d. 01 01
     e. 96 96

102. If I am in my home directory named /home/myhome and dir is an empty sub-
     directory, what is true after this command line:
        touch new ; mv ./dir/../new ../myhome/old
     a. there is a second copy of the file new in the file named old
     b. the directory dir now contains only a file named old
     c. the command fails because the path ./dir/../new does not exist
     d. the parent directory of dir now has a file named old in it
     e. the command fails because the path ../myhome/old does not exist

103. If file /a contains 20 lines, and file /b contains 30 lines, then how many
     lines are in file /c after this sequence of shell commands:
        sort /a /b >/c ; cat /a >>/b ; sort /c /b /a >/c
     a. 80
     b. 70
     c. 120
     d. 50
     e. no lines (empty file)

104. What is in the file x after this command sequence:
        echo foo >a ; rm b ; echo bar >>b ; cp a b >x
     a. no such file (nonexistent)
     b. nothing - empty file - no data
     c. bar
     d. foo followed by bar
     e. foo

105. Which command line displays the contents of the Unix passwd file one page
     at a time?
     a. less /etc/passwd
     b. /etc/passwd cat less
     c. cat less | /etc/passwd
     d. /etc/passwd | less
     e. cat /etc/passwd less

106. If file x contains 10 lines, and file y contains 20 lines, then how many
     lines are in file cat after this command line:
        sort x y >z ; tail -5 x >x ; sort x y z >cat
     a. 40
     b. 55
     c. 50
     d. no lines (empty file)
     e. 60

107. If you type the command  sort verybigfile >out
     which of the following key sequences will interrupt it and take you
     immediately back to the command prompt?
     a. [CTRL-C]
     b. [CTRL-L]
     c. [CTRL-U]
     d. [CTRL-D]
     e. [CTRL-R]

108. If file /a contains 30 lines, and file /b contains 50 lines, then how many
     lines are in file /c after this sequence of shell commands:
        cat /a /b >/c ; sort /c >/c ; sort /c /a /b >/c
     a. 160
     b. 30
     c. 80
     d. 50
     e. no lines (empty file)

109. What appears on your screen after this bash shell command line?
        echo hi | wc
     a. 1 2 1
     b. 2 1 1
     c. 1 1 2
     d. 1 1 3
     e. no output on screen

110. What appears on your screen after this bash shell command line?
        echo hi >a ; cp a b | wc -c
     a. 3
     b. 2
     c. no output on screen
     d. 1
     e. 0

111. How many lines are in the file bar after this command line:
        echo hi >x ; echo ho >>x ; cat x >bar
     a. 1
     b. 4
     c. 6
     d. 2
     e. nothing - empty file - no data

112. What can you do to get back (redo) the last command you typed to the bash
     (Linux) shell?
     a. Type [CONTROL]-[BACKSPACE]
     b. Type [ALT]-[F2]
     c. Use the "UpArrow" key.
     d. Type [CONTROL]-[ALT]-[UP]
     e. Use the "PageUp" key.

113. In an empty directory, how many arguments are passed to the cat command in
     this bash command line?   date >a1 ; touch a2 ba ca ; cat a*
     a. 2
     b. 1
     c. 3
     d. 4
     e. none

114. If foo is a sub-directory that contains only the file single, what happens
     after this command:   mv ./foo/single foo/../double
     a. the command fails because the name double does not exist
     b. the directory foo now contains only a file named double
     c. the directory foo is now empty
     d. there is a second copy of the file single in the file named double
     e. the command fails because the name foo/../double does not exist

115. In an empty directory, how many arguments are passed to the rm command in
     this bash command line?   touch 2a a a1 ba ca .a ; rm a*
     a. 2
     b. 1
     c. 4
     d. 3
     e. none

116. If directory /dir contains these three four-character file names:  .123,
     .124, .???, then what is the output on your screen of the following command
     line:  echo /dir/????
     a. echo: /dir/????: No such file or directory
     b. no output on screen
     c. /dir/????
     d. /dir/.123 /dir/.124
     e. /dir/.123 /dir/.124 /dir/.???

117. What appears on your screen after this bash shell command line?
        echo hi >a ; ls a | wc -c
     a. 4
     b. 2
     c. no output on screen
     d. 3
     e. 1

118. If file twenty contains 20 lines, and file thirty contains 30 lines, then
     how many lines are output on your screen by this command:
        tail twenty | cat thirty
     a. 20
     b. 30
     c. 50
     d. 40
     e. no output on screen

119. What appears on your screen after this bash shell command line?
        echo hi >out ; wc -c out
     a. 5 out
     b. 2 out
     c. no output on screen
     d. 4 out
     e. 3 out

120. What is the output on your screen of this successful command sequence?
        cd /home/dir ; mkdir one ; mkdir two ; pwd
     a. /two
     b. /home/dir/one
     c. /home/dir/two
     d. /home/dir
     e. /home/dir/one/two

121. What is the output on your screen of this shell command line in an empty
     directory?   touch a .a bc .bc def ; echo [ab]*
     a. no output on screen
     b. a bc
     c. a .a bc .bc
     d. an error message from echo saying [ab]* does not exist
     e. [ab]*

122. What is the output on your screen of this successful command sequence?
        cd /home/foo ; touch dir ; mkdir bar ; pwd
     a. /home/foo/bar
     b. /home/foo/dir/bar
     c. /bar
     d. /home/foo/dir
     e. /home/foo

123. Which of these statements is true?
     a. To indicate End-of-File (no more input) to a program, type
        [CONTROL]-[D].
     b. The file command creates a new, empty file in the current directory
     c. To interrupt a Unix process from the keyboard, type [CONTROL]-[D].
     d. To erase an entire line of typing, type [ALT]-[DELETE].
     e. Command apropos is an exact synonym for command man.

124. If my current working directory is /home, and my home directory is
     /home/me, which of the following commands copies the Unix password file
     into my home directory under the name foo?
     a. cp ../../etc/passwd /me/foo
     b. cp ../etc/passwd ../me/foo
     c. cp ../etc/passwd ./me/foo
     d. cp ./me/../etc/passwd ../home/me/foo
     e. cp ../home/me/../etc/passwd ./me/./foo

125. If file nine contains nine lines, each of which is the one-digit line
     number of the line in the file (1 through 9), what is the output on your
     screen of this command:  sort nine nine | tail -5 | head -1
     a. 1 1
     b. 5 5
     c. 7
     d. 9
     e. 1

126. What appears on your screen after this command line?
        echo hi >ls ; cat ls >wc
     a. no output on screen
     b. hi
     c. ls
     d. 1  1  2
     e. 1  1  3

127. If file /a contains 30 lines, and file /b contains 50 lines, then how many
     lines are output on your screen by this command:  cat /a | sort /b
     a. 50
     b. 20
     c. 30
     d. 80
     e. no lines (empty file)

128. What is the output on your screen of this command sequence:
        echo bat >one ; echo sky | head -2 one
     a. bat
     b. sky followed by bat
     c. bat followed by sky
     d. sky
     e. an error message

129. Which command sequence below outputs only lines 5-10 of the file named foo?
     a. head -15 foo | tail -5
     b. tail -10 foo | head -6
     c. head -10 foo | tail -6
     d. head -5 foo | tail -10
     e. tail -15 foo | head -5

130. If file ten contains 10 lines, and file twenty contains 20 lines, then how
     many lines are output on your screen by this command:
        cat twenty | sort ten
     a. 10
     b. no lines (no output)
     c. 20
     d. 30
     e. 60

131. If I am in my home directory named /home/me and x is an empty sub-
     directory, what is true after this command line:
        touch ./x/fil ; mv x/./fil x/../../me/./y
     a. the command fails because the path x/../../me does not exist
     b. the directory x now contains only a file named y
     c. there is a second copy of the file fil in the file named y
     d. the command fails because the path x/./fil does not exist
     e. the directory x is still empty

132. Which of these command lines will make file cow contain all of the content
     of file one followed by all of the content of file two?
     a. mv one two >cow
     b. echo one two >cow
     c. cp  one >cow  two >cow
     d. cp one two >cow
     e. cat one two >cow

133. What command can you use to remove a directory that isn't empty?
     a. mv -r dir
     b. rmdir -r dir
     c. rm -r dir
     d. deldir -r dir
     e. del -r dir

134. How can you ask the bash (Linux) shell to complete commands or file names
     for you?
     a. You can type the first part of the command or file name and press the
        TAB key.
     b. Type [ALT]-[F2] the shell will present a menu of commands.
     c. Type [CONTROL]-[D] and the shell will present a menu of commands.
     d. Type [CONTROL]-[ALT]-[DEL] and the shell will present a menu of
        commands.
     e. You can type the first part of the command or file name and press the
        ALT key.

135. What would you see if you typed this command:  cat /users
     a. The contents of the file users located in the root directory
     b. The contents of the file users located in your home directory
     c. The contents of your directory named users
     d. The contents of the file users located in the parent directory
     e. The contents of your subdirectory named users

136. What command shows all the lines in file foo that contain the string bar?
     a. grep bar foo
     b. grep foo bar
     c. grep cat foo bar
     d. cat foo > grep bar
     e. grep bar >foo

137. If file /a contains 40 lines, and file /b contains 60 lines, then how many
     lines are output on your screen by this command:
        sort /a /b | cat /a | cat /b
     a. 200
     b. 100
     c. 40
     d. 160
     e. 60

138. If /bin/bash is a file name, which pathname always leads to the same file?
     a. ./bin/bash
     b. /bin/bash/..
     c. /../../bin/bash
     d. /bin/bash/.
     e. /bin/../bash

139. Which Unix command sequence deletes a directory and everything inside it?
     a. rm -r dir
     b. deltree -all dir
     c. rmdir -all dir
     d. rmdir -r dir
     e. rm -all dir

140. What is the output on your screen of this shell command line in an empty
     directory?   touch .12 .345 .6789 ; echo .??*
     a. . .. .12 .345 .6789
     b. .??*
     c. no output on screen
     d. an error message from echo saying .??* does not exist
     e. .12 .345 .6789

141. What command shows all the lines in file /etc/group that contain the string
     idallen?
     a. cat /etc/group | wc idallen
     b. grep /etc/group idallen
     c. grep idallen ; /etc/group
     d. cat /etc/group ; grep idallen
     e. grep idallen /etc/group

142. What appears on your screen after this bash shell command line?
        echo hi >a ; echo a | wc -c
     a. no output on screen
     b. 4
     c. 2
     d. 3
     e. 1

143. What appears on your screen after this bash shell command line?
        mkdir foo ; rmdir foo | wc -c
     a. 4
     b. 1
     c. no output on screen
     d. 3
     e. 0

144. How many command arguments does the shell pass to this echo command:
        echo one two three >four five
     a. Three arguments.
     b. Two arguments.
     c. Four arguments.
     d. Six arguments.
     e. Five arguments.

145. What is the output on your screen of the following sequence of commands:
        echo wc >wc ; wc wc >wc ; cat wc
     a. wc
     b. 0 0 0 wc
     c. 1 1 2 wc
     d. no output on screen
     e. 1 1 3 wc

146. How many lines are in file out after this command line?
        echo hi >dog >out >cat
     a. no such file (file does not exist)
     b. 2
     c. 1
     d. nothing - empty file - no data
     e. 3

147. What appears on your screen after this bash shell command line?
        echo hi >a ; cat a | wc -c
     a. 3
     b. 2
     c. 1
     d. no output on screen
     e. 4

148. How many command arguments does the shell pass to this echo command:
        echo 1 2 3 4 >5
     a. 5
     b. 4
     c. 3
     d. 6
     e. 7

149. What appears on your screen after this command line?
        mkdir xx ; rmdir xx | wc -c
     a. 2
     b. 0
     c. 1
     d. 3
     e. no output on screen

150. If /bin/bash is a file name, which pathname always leads to the same file?
     a. /bin/bash/.
     b. ./bin/bash
     c. /bin/bin/../bash
     d. /bin/../bash
     e. /bin/../bin/bash

151. What appears on your screen after this sequence of commands:
        echo one >x ; cp x y ; echo two >>y ; sort x >y ; cat y
     a. empty file - no output on the screen
     b. one followed by two
     c. two
     d. two followed by one
     e. one

152. Which of the following statements is true about this shell command line:
        >bar zoom bar haven
     a. Error: The command name is missing from the command line.
     b. The command zoom sees two arguments.
     c. The command bar sees three arguments.
     d. The command bar sees only two arguments
     e. The command zoom sees three arguments.

153. What text is output by this bash shell command sequence:
        echo cow >foo ; echo dog | head -1 foo
     a. dog followed by cow
     b. cow followed by dog
     c. foo
     d. dog
     e. cow

154. In an empty directory, how many words are in file out after this bash shell
     command line?   touch a ; ls >out
     a. 3
     b. 1
     c. 4
     d. 2
     e. no output (empty file)

155. What would you see if you typed this command:   cat /foo
     a. The contents of the file foo located in the parent directory
     b. The contents of your subdirectory named foo
     c. The contents of your directory named foo
     d. The contents of the file foo located in the root directory
     e. The contents of the file foo located in your home directory

156. What appears on your screen after this bash shell command line?
        echo hi >out | wc -c
     a. no output on screen
     b. 3
     c. 0
     d. 2
     e. 1

157. If file foo contains nine lines, each of which is the one-digit line number
     of the line in the file (1 through 9), what is the output on your screen of
     this command:  cat foo foo | cat | tail -4 | head -1
     a. 6
     b. 8
     c. 9
     d. 7
     e. 5

158. How many lines are in the file out after this command sequence:
        echo hi >x ; echo ho >>x ; cat x x x >out
     a. 1
     b. 2
     c. 3
     d. 6
     e. nothing - empty file - no data

159. Which command pipeline outputs the count of the number of manual page
     titles that contain the keyword "sort"?
     a. wc man sort
     b. man sort | wc
     c. man -k sort | wc
     d. man sort ; wc
     e. wc -k sort

160. If file foo contains nine lines, each of which is the one-digit line number
     of the line in the file (1 through 9), what is the output on your screen of
     this command:  cat foo foo | cat | tail -5 | head -1
     a. 8
     b. 6
     c. 9
     d. 5
     e. 7

161. How do I change "foo" to "bar" on lines 25 to 30 in the vim editor?
     a. :25s/foo/bar/*5
     b. :25-30 change "foo","bar"
     c. :25,30 change "foo" "bar"
     d. :25c foo bar *5
     e. :25,30s/foo/bar/

162. What is in the file bar after this command sequence:
        echo hi >x ; echo ho >x ; mv x y >bar
     a. hi followed by ho
     b. nothing - empty file - no data
     c. no such file (nonexistent)
     d. hi
     e. ho

163. What is true about this bash shell command line?
        date >ls ; ls -ls ls >wc
     a. The ls command receives the output of date on standard input.
     b. The wc command counts the output of the ls command.
     c. The file wc has one line in it.
     d. The ls command is executed more than once.
     e. The shell finds and executes three different commands.

164. What is the output of this sequence of three shell commands:
        echo hi >wc ; ls wc >wc ; wc wc
     a. 1 1 3 wc
     b. 1 1 2 wc
     c. no output on screen
     d. 0 0 0 wc
     e. 2 2 4 wc

165. Which of these command sequences will make file out contain all of the
     content of file in1 followed by all of the content of file in2?
     a. mv in1 in2 >out
     b. cat in1 in2 >out
     c. cp  in1 >out  in2 >out
     d. cp in1 in2 >out
     e. echo in1 in2 >out

166. What is the output on your screen of this command sequence:
        echo foo >file ; echo bar | sort file
     a. foo
     b. bar followed by foo
     c. bar
     d. foo followed by bar
     e. an error message

167. Which of these command sequences will make file foo contain all of the
     content of file a followed by all of the content of file b?
     a. cp a >foo ; cp b >>foo
     b. mv a b >foo
     c. cat a >foo ; cat b >>foo
     d. echo a b >foo
     e. cp a b >foo

168. How many lines are in the file out after this command sequence:
        echo hi >x ; echo ho >x ; cat x x x >out
     a. 1
     b. 3
     c. 2
     d. 6
     e. nothing - empty file - no data

169. If you type the command  echo 'missing quote
     which of the following key sequences will interrupt it and take you
     immediately back to the command prompt?
     a. [CTRL-R]
     b. [CTRL-L]
     c. [CTRL-C]
     d. [CTRL-U]
     e. [CTRL-D]

170. If file nine contains nine lines, each of which is the one-digit line
     number of the line in the file (1 through 9), what is the output on your
     screen of this command:  sort nine nine | tail -4 | head -1
     a. 6 6
     b. 1 1
     c. 6
     d. 4 4
     e. 8

171. What is the output on your screen of this shell command line in an empty
     directory?   ls *
     a. *
     b. .
     c. .   ..
     d. no output on screen
     e. an error message from ls saying * does not exist

172. If file foo contains nine lines, each of which is the one-digit line number
     of the line in the file (1 through 9), what is the output on your screen of
     this command:  cat foo foo | sort -r | head -5 | tail -1
     a. 7
     b. 8
     c. 5
     d. 9
     e. 6

173. What is the output on your screen of this shell command line in an empty
     directory?   echo *
     a. an error message from echo saying * does not exist
     b. .   ..
     c. no output on screen
     d. .
     e. *

174. If my current directory is /home, which of these pathnames is equivalent to
     the pathname /home/a/b/c?
     a. ./home/a/b/c
     b. ../a/b/c
     c. /a/b/c
     d. ./a/b/c
     e. ../home/b/c

175. Which command pipeline outputs the count of the number of pathnames that
     lie under the current directory and recursively under all its
     subdirectories?
     a. ls / | wc
     b. ls . | wc
     c. dir / | wc
     d. file . | wc
     e. find . | wc

176. Given an existing file of yours named /a/x, what is the output on your
     screen of this sequence of three shell commands:
        echo hi >/a/x ; sort /a/x >/a/x ; wc /a/x
     a. 1 1 3 /a/x
     b. 2 2 4 /a/x
     c. 1 1 2 /a/x
     d. 0 0 0 /a/x
     e. no output on screen

177. If my current directory is /bin, which of these pathnames is equivalent to
     the file name /bin/ls?
     a. /root/bin/ls
     b. ./bin/ls
     c. ls/.
     d. ../bin/ls/.
     e. ../../bin/ls

     Answer Key - NET2003 - Ian Allen - Winter 2007 - NET2003 Practice Test

   1. d                                      57. a
   2. c                                      58. a
   3. c                                      59. a
   4. d                                      60. c
    5. b                                      61. b
    6. d                                      62. a
    7. a                                      63. c
    8. b                                      64. c
   9. c                                      65. b
  10. a                                      66. a
  11. e                                      67. a
  12. a                                      68. a
   13. c                                      69. e
   14. e                                      70. c
   15. d                                      71. b
   16. c                                      72. d
  17. c                                      73. a
  18. c                                      74. d
  19. b                                      75. d
  20. c                                      76. d
   21. d                                      77. a
   22. a                                      78. a
   23. a                                      79. c
   24. a                                      80. c
  25. e                                      81. d
  26. d                                      82. a
  27. d                                      83. c
  28. b                                      84. c
   29. d                                      85. b
   30. a                                      86. c
   31. e                                      87. b
   32. a                                      88. e
  33. b                                      89. d
  34. d                                      90. b
  35. d                                      91. e
  36. c                                      92. c
   37. a                                      93. d
   38. a                                      94. d
   39. e                                      95. e
   40. e                                      96. b
  41. c                                      97. b
  42. b                                      98. a
  43. e                                      99. d
  44. c                                     100. c
   45. b                                     101. a
   46. a                                     102. d
   47. d                                     103. b
   48. c                                     104. b
  49. d                                     105. a
  50. e                                     106. c
  51. e                                     107. a
  52. a                                     108. c
   53. e                                     109. d
   54. b                                     110. e
   55. b                                     111. d
   56. d                                     112. c

 113. a                                      173. e
 114. c                                      174. d
 115. a                                      175. e
 116. c                                      176. d
  117. b                                    177. e
  118. b
  119. e                                   Count of a:  43  24%
  120. d                                   Count of b:  29  16%
 121. b                                    Count of c:  40  23%
 122. e                                    Count of d:  33  19%
 123. a                                    Count of e:  32  18%
 124. c
  125. c                                   With 5 choices: 177
  126. a
  127. a                                   Macro .cmd split with indent: 69
  128. a
 129. c
 130. a
 131. e
 132. e
  133. c
  134. a
  135. a
  136. a
 137. e
 138. c
 139. a
 140. e
  141. e
  142. c
  143. e
  144. c
 145. b
 146. d
 147. a
 148. b
  149. b
  150. e
  151. e
  152. b
 153. e
 154. d
 155. d
 156. c
  157. a
  158. d
  159. c
  160. d
 161. e
 162. b
 163. c
 164. a
  165. b
  166. a
  167. c
  168. b
 169. c
 170. e
 171. e
 172. a