Practice Test
DAT2330 - Ian Allen - Fall 2003-1-			 PRACTICE

Evaluation: 110 Questions	  Name: _________________________
		      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 - 110 Questions
This is a practice test containing practice questions.	The real
test will contain many questions similar to these.  Knowing the
concepts behind the questions is necessary; memorizing these
answers won't help.

The real test may or may not have the same number of questions.
The real test may have some questions unlike anything given here.

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

1.   In an empty directory, what is the length of the longest
     file name created by the following bash shell two-command
     sequence:	  ok='1 12 123 1234' ; touch '$ok'
     a. 2 characters
     b. 4 characters
     c. 1 character
     d. 3 characters
     e. 13 characters

2.   Which bash command sequence correctly searches for the chars
     and then prints OK if it is found inside the password file?
     a. if [ test chars /etc/passwd ] ; then echo OK ; fi
     b. if [ grep chars /etc/passwd ] ; then echo OK ; fi
     c. if test chars /etc/passwd ; then echo OK ; fi
     d. if grep chars /etc/passwd ; then echo OK ; fi
     e. if test chars = /etc/passwd ; then echo OK ; fi

3.   Given my directory dir and my file dir/foo owned by me,
     which permissions allow me to change or create new content
     (data) in the file dir/foo but not delete the file?
     a. Permissions 400 on directory dir and 400 on file dir/foo.
     b. Permissions 200 on directory dir and 200 on file dir/foo.
     c. Permissions 600 on directory dir and 700 on file dir/foo.
     d. Permissions 500 on directory dir and 600 on file dir/foo.
     e. Permissions 100 on directory dir and 100 on file dir/foo.










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DAT2330 - Ian Allen - Fall 2003-2-			 PRACTICE

4.   A shell script named foo is executed as follows:
	./foo 1 "2 3 4" 5
     Inside the script is the line:   echo "$2"
     What is the output from this line?
     a. $2
     b. 2 3 4
     c. "2
     d. 2
     e. "2 3 4"

5.   What is the output of the following sequence of bash
     commands:	 x=1 ; y=2 ; test $x -le $y ; echo $?
     a. the number 0 or 1 followed by another 0 or 1 on a new
	line
     b. no output
     c. 1
     d. 0
     e. test: $x: integer expression expected

6.   If a bash shell script named foo contains the line:
	if [ "$1" = '$2' ] ; then echo SAME ; fi
     then which of the following command lines will produce SAME
     as output?
     a. ./foo '$2' bar
     b. ./foo bar bar
     c. ./foo "bar" 'bar'
     d. ./foo $2 $2
     e. ./foo "$1" '$2'

7.   How many arguments are passed to the command by the shell on
     this command line:	  <bar bar -b "-a" '-r' >bar bar bar
     a. 3
     b. 2
     c. 4
     d. 5
     e. 6

8.   Given the following bash shell command line:
	read  xx  yy  zz
     which user keyboard input line below will assign the text 22
     to the shell variable named yy?
     a. xx=11  yy=22  zz=33
     b. 11  22	33
     c. 11,22,33
     d. 11;22;33
     e. 11:22:33

9.   Given my directory dir and my file dir/foo owned by me,
     which permissions allow me to delete the file dir/foo from
     the directory, but not change the content (data) in the
     file?
     a. Permissions 300 on directory dir and 300 on file dir/foo.
     b. Permissions 300 on directory dir and 500 on file dir/foo.
     c. Permissions 100 on directory dir and 100 on file dir/foo.
     d. Permissions 100 on directory dir and 200 on file dir/foo.
     e. Permissions 500 on directory dir and 400 on file dir/foo.




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DAT2330 - Ian Allen - Fall 2003-3-			 PRACTICE

10.  What is the output 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

11.  If a=cow and b=dog then what is the output of the following
     sequence of bash commands:
	[ $a = dog -o $b = cow ] ; echo $?
     a. no output
     b. test: $a: integer expression expected
     c. the number 1 or 0 followed by another 1 or 0 on a new
	line
     d. 1
     e. 0

12.  If foo were a file of text containing 50 different lines,
     what would be the output of this exact command line:
	diff foo foo
     a. an error message because diff doesn't allow the same file
	name twice
     b. several lines, which are the lines that are different
	between the two files
     c. no output
     d. the contents of file foo would be displayed
     e. an error message because diff only allows one file name

13.  What is the output of the following sequence of bash
     commands:	 x=cow ; y=dog ; test -z $x ; echo $?
     a. the number 0 or 1 followed by another 0 or 1 on a new
	line
     b. test: $x: integer expression expected
     c. no output
     d. 1
     e. 0

14.  How many arguments and options are there to the command:
	ls -lid /p
     a. Two arguments, one of which is a single option name and
	the other is a pathname.
     b. Three arguments, one of which contains options and one is
	a pathname.
     c. Two arguments: A file name starting with a dash and a /p
	switch option argument.
     d. Two arguments, neither of which is an option.
     e. Two command line arguments, one of which contains three
	options.

15.  If cow=5 and dog=5, which bash command sequence correctly
     compares the two numbers as equal and prints OK?
     a. if test cow -eq dog ; then echo OK ; fi
     b. if ( cow == dog ) ; then echo OK ; fi
     c. if [ $cow==$dog ] ; then echo OK ; fi
     d. if [ cow = dog ] ; then echo OK ; fi
     e. if test $cow -eq $dog ; then echo OK ; fi



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DAT2330 - Ian Allen - Fall 2003-4-			 PRACTICE

16.  What minimal permissions must you have on a directory to be
     able to execute successfully the command ls . from inside
     the directory?
     a. r--
     b. r-x
     c. --x
     d. -wx
     e. rw-

17.  If the file foo contained the word mom, what would be the
     bash shell output of this two command sequence:
	PATH=/etc/passwd:/bin/ls:/bin/cat ; /bin/ls foo
     a. no output
     b. /bin/ls: foo: No such file or directory
     c. mom
     d. bash: /bin/ls: command not found
     e. foo

18.  If /bin/foo is a program that outputs hi and /usr/bin/foo is
     a program that outputs mom what is the output of this shell
     command sequence:	PATH=/etc:/usr/bin:/bin ; foo
     a. bash: foo: command not found
     b. mom
     c. hi
     d. mom followed by hi
     e. hi followed by mom

19.  If a=cow and b=dog then what is the output of the following
     sequence of bash commands:
	[ $a = cow -a $b = cow ] ; echo $?
     a. 0
     b. test: $a: integer expression expected
     c. the number 1 or 0 followed by another 1 or 0 on a new
	line
     d. 1
     e. no output

20.  If dog=12 and cat=99 then which of the following bash
     command lines outputs only the word hi (and nothing else)?
     a. [dog!=dog] || echo hi
     b. [ dog -ne cat ] && echo hi
     c. [ dog = dog ] && echo hi
     d. [!dog = cat] && echo hi
     e. [dog -ne cat] || echo hi

21.  If /etc/passwd is a file name, which of the following
     pathnames always leads to the same file?
     a. ././etc/passwd
     b. /etc/passwd/./.
     c. /etc/../../passwd
     d. /./../etc/./passwd
     e. /etc/passwd/../..








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DAT2330 - Ian Allen - Fall 2003-5-			 PRACTICE

22.  Which of the following bash PATH statements makes the most
     sense?
     a. PATH=/bin:/usr/bin:/etc/passwd
     b. PATH=/bin/sh:/usr/bin:/etc:/bin
     c. PATH=/bin/ls:/etc:/usr/bin
     d. PATH=/bin:/usr/bin:/etc
     e. PATH=/bin:/bin/cat:/usr/bin

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

24.  What is the output of the following sequence of bash
     commands:	 false && echo "foo	bar $?"
     a. foo	bar 0
     b. no output
     c. foo	bar 1
     d. foo bar 0
     e. foo bar 1

25.  What is the output of this sequence of three shell commands:
	umask 547 ; mkdir newdir ; ls -ld newdir
     a. d-w--w---- 1 me me 0 Feb 20 07:55 newdir
     b. d-w--wxrwx 1 me me 0 Feb 20 07:55 newdir
     c. dr--r--rw- 1 me me 0 Feb 20 07:55 newdir
     d. dr-xr--rwx 1 me me 0 Feb 20 07:55 newdir
     e. d-w--wx--- 1 me me 0 Feb 20 07:55 newdir

26.  What is the output of the following sequence of bash
     commands:	 a=cow ; b=dog ; touch $a ; test -z $a ; echo $?
     a. the number 1 or 0 followed by another 1 or 0 on a new
	line
     b. 1
     c. 0
     d. test: $a: integer expression expected
     e. no output

27.  Given this long listing:
	drwxr-xr-x 2048 root root 4096 Jan 20 14:22 /dir
     How many subdirectories lie immediately under /dir?
     a. 2048
     b. 2046
     c. there is not enough information shown to answer the
	question
     d. 4094
     e. 4096










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DAT2330 - Ian Allen - Fall 2003-6-			 PRACTICE

28.  If a=cow and b=dog then what is the output of the following
     sequence of bash commands:	  if $a = $b ; then echo $a ; fi
     a. no output
     b. test: cow: integer expression expected
     c. bash: cow: command not found
     d. test: $a: integer expression expected
     e. cow

29.  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 ALT key.
     b. Type [CONTROL]-[D] and the shell will present a menu of
	commands.
     c. Type [CONTROL]-[ALT]-[DEL] and the shell will present a
	menu of commands.
     d. Type [ALT]-[F2] the shell will present a menu of
	commands.
     e. You can type the first part of the command or file name
	and press the TAB key.

30.  What is the bash shell output of this command sequence:
	true && echo space     junk $?
     a. no output
     b. space	  junk 1
     c. space junk ?
     d. space	  junk ?
     e. space junk 0

31.  What is the bash output of this command sequence:
	false && echo "Hello	 There"
     a. no output
     b. "Hello	   There"
     c. Hello There
     d. Hello	  There
     e. HelloThere

32.  Which bash command line below allows programs in the current
     directory to execute without preceding the names with ./?
     a. $PATH=.:$HOME:/usr/bin
     b. $PATH=/usr/bin:./$HOME
     c. PATH=./$HOME:/usr/bin
     d. PATH=/usr/bin/.:$HOME
     e. PATH=/usr/bin:$HOME:.

33.  What is the output of the following sequence of bash
     commands:	 x=cow ; y=dog ; touch $x ; test -z $x ; echo $?
     a. 1
     b. no output
     c. 0
     d. test: $x: integer expression expected
     e. the number 0 or 1 followed by another 0 or 1 on a new
	line







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DAT2330 - Ian Allen - Fall 2003-7-			 PRACTICE

34.  If x=pig and y=dog then what is the output of the following
     sequence of bash commands:	  if $x = $y ; then echo $y ; fi
     a. bash: pig: command not found
     b. test: $x: integer expression expected
     c. dog
     d. test: pig: integer expression expected
     e. no output

35.  If foo is a script containing the line TERM=linux ; export
     TERM, what is the output of the following sequence of bash
     commands: TERM=vt100 ; ./foo ; echo "$TERM"
     a. foo
     b. linux
     c. $TERM
     d. vt100
     e. TERM

36.  In an empty directory, what is the shell output of these
     three commands:
	touch .1 .2 .3 11 12 ; b='.1* .2*' ; echo '$b'
     a. '.1* .2*'
     b. .1 .2
     c. .1* .2*
     d. 11 .1 12 .2
     e. $b

37.  Which of these statements is true?
     a. Only single quotes are strong enough to stop shell glob
	(wildcard) patterns from expanding.
     b. If /x is an empty directory, sort /x/* produces an error
	message.
     c. Typing ./script and bash script always give identical
	results.
     d. The cat food command looks up the file name argument food
	in your $PATH.
     e. If /y is an empty directory, echo /y/* produces an error
	message.

38.  If variable foo might contain nothing (a null value -
     defined but empty), which bash command sequence correctly
     tests for this and prints OK?
     a. if [ $foo -eq : ] ; then echo OK ; fi
     b. if [ ''$foo'' = '''' ] ; then echo OK ; fi
     c. if [ "$foo" = * ] ; then echo OK ; fi
     d. if [ $foo -eq "" ] ; then echo OK ; fi
     e. if [ "$foo" = "" ] ; then echo OK ; fi

39.  What is the bash shell output of this two-command sequence:
	cd /home/alleni && echo "In $(pwd)"
     a. In /home/alleni
     b. no output
     c. In $(pwd)
     d. In 0pwd)
     e. "In $(pwd)"






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DAT2330 - Ian Allen - Fall 2003-8-			 PRACTICE

40.  If x=5 and y=5, which bash command sequence correctly
     compares the two numbers as equal and prints OK?
     a. if test x -eq y ; then echo OK ; fi
     b. if test $x -eq $y ; then echo OK ; fi
     c. if [ x = y ] ; then echo OK ; fi
     d. if [ $x==$y ] ; then echo OK ; fi
     e. if ( x == y ) ; then echo OK ; fi

41.  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 of this command:
	cat foo foo | cat | tail -4 | head -1
     a. 6
     b. 8
     c. 7
     d. 9
     e. 5

42.  What is the output of the following sequence of bash
     commands:	 echo wc >wc ; wc wc >wc ; sort wc
     a. 0 0 0 wc
     b. 1 1 3 wc
     c. no output
     d. 1 1 2 wc
     e. wc

43.  Which command sequence below outputs only lines 11-15 of the
     Unix password file?
     a. tail -15 /etc/passwd | head -10
     b. tail -10 /etc/passwd | head -15 /etc/passwd
     c. head -10 /etc/passwd | tail -15 /etc/passwd
     d. head -15 /etc/passwd | tail -5 /etc/passwd
     e. head -15 /etc/passwd | tail -5

44.  What is the output of the following sequence of bash
     commands:	 x=0 ; test $x ; echo $?
     a. 0
     b. 1
     c. test: $x: integer expression expected
     d. the number 0 or 1 followed by another 0 or 1 on a new
	line
     e. no output

45.  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. no lines (empty file)
     c. 70
     d. 50
     e. 120








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DAT2330 - Ian Allen - Fall 2003-9-			 PRACTICE

46.  What is the bash shell output of this two-command sequence
     if run in a directory containing 888 files with names that
     are all the numbers from 1 to 888 inclusive:
	  cow="*" ; echo '$cow'
     a. '$cow'
     b. *
     c. the file names 1 through 888, surrounded by quotes
     d. $cow
     e. the file names 1 through 888

47.  If variable bar might contain nothing (a null value -
     defined but empty), which bash command sequence correctly
     tests for this and prints YO?
     a. if [ "$bar" = * ] ; then echo YO ; fi
     b. if [ $bar -eq "" ] ; then echo YO ; fi
     c. if [ ''$bar'' = '''' ] ; then echo YO ; fi
     d. if [ "$bar" = "" ] ; then echo YO ; fi
     e. if [ $bar -eq : ] ; then echo YO ; fi

48.  In an empty directory, what is the length of the longest
     file name created by the following bash shell two-command
     sequence:	  x='1 12 123 1234' ; touch '$x'
     a. 3 characters
     b. 4 characters
     c. 1 character
     d. 2 characters
     e. 13 characters

49.  Given the following bash shell command line: read a b c,
     which user keyboard input line below will assign the text b
     to the shell variable named b?
     a. a=a b=b c=c
     b. a:b:c
     c. a;b;c
     d. a b c
     e. a,b,c

50.  Which of these commands makes a file owned by me, also
     executable by me?
     a. umask 111 myfile
     b. chmod u+x ./myfile
     c. chmod x=u ./myfile
     d. umask 777 myfile
     e. chmod x+u myfile

51.  What is the bash shell output of this two-command sequence
     if run in a directory containing 123 files with names that
     are all the numbers from 1 to 123 inclusive:
	  bat="*" ; echo "$bat"
     a. *
     b. the file names 1 through 123
     c. the file names 1 through 123, surrounded by quotes
     d. $bat
     e. "$bat"






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DAT2330 - Ian Allen - Fall 2003-10-			 PRACTICE

52.  Which bash command sequence below always outputs just the
     date only if the first argument is either a file or a
     directory?
     a. if [ -f -o -d "$1" ]; then date ; fi
     b. if [ "$1" -eq -f -o "$1" -eq -d ]; then date ; fi
     c. if [ "-f $1" || "-d $1" ]; then date ; fi
     d. if [ -f "$1" -o -d "$1" ]; then date ; fi
     e. if [ -f || -d "$1" ]; then date ; fi

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

54.  If directory dir contains only these five two-character file
     names: a?, 11, ?1, 1*, .1, then which shell command below
     will remove only the single two-character name ?1 from the
     directory?
     a. rm dir/?1
     b. rm dir/1*
     c. rm dir/??
     d. rm dir/\??
     e. rm dir/*1

55.  Which bash command sequence below always outputs just the
     date only if the first argument is either readable or
     executable?
     a. if [ "-r $1" || "-x $1" ]; then date ; fi
     b. if [ -r -o -x "$1" ]; then date ; fi
     c. if [ "$1" -eq -r -o "$1" -eq -x ]; then date ; fi
     d. if [ -r || -x "$1" ]; then date ; fi
     e. if [ -r "$1" -o -x "$1" ]; then date ; fi

56.  If x=8 and y=9 then which of the following bash command
     lines outputs only the word foobar (and nothing else)?
     a. [ x = x ] && echo foobar
     b. [ x -ne y ] && echo foobar
     c. [x!=x] || echo foobar
     d. [x -ne y] || echo foobar
     e. [!x = y] && echo foobar

57.  Which bash command sequence correctly searches for the
     string foo and then prints YES if it is found inside the
     group file?
     a. if test foo /etc/group ; then echo YES ; fi
     b. if [ test foo /etc/group ] ; then echo YES ; fi
     c. if test foo = /etc/group ; then echo YES ; fi
     d. if grep foo /etc/group ; then echo YES ; fi
     e. if [ grep foo /etc/group ] ; then echo YES ; fi








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DAT2330 - Ian Allen - Fall 2003-11-			 PRACTICE

58.  What is the bash shell output of this two-command sequence
     if run in a directory containing 765 files with names that
     are all the numbers from 1 to 765 inclusive:
	  foo="*" ; echo $foo
     a. *
     b. the file names 1 through 765
     c. all the file names that start with an asterisk ('*')
     d. an asterisk ('*') and the file names 1 through 765
     e. $foo

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

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

61.  Which bash command line below allows programs in the current
     directory to execute without preceding the names with ./?
     a. PATH = ./$HOME:/bin
     b. $PATH=/bin:./$HOME
     c. PATH=/bin:$HOME:.
     d. PATH = /bin:$HOME:.
     e. $PATH=.:$HOME:/bin

62.  Which of the following shell command lines displays all the
     names in the current directory that are exactly three
     letters (alphabetic) long (and nothing else)?
     a. echo [a-mn-zA-YZ][ab-zAB-YZ][za-yZA-Y]
     b. echo [0-89][01-9][0-45-9]
     c. echo [a,zA,Z][a,zA,Z][a,zA,Z]
     d. echo [azAZ][azAZ][azAZ]
     e. echo ???

63.  If a=cow and b=dog then what is the output of the following
     sequence of bash commands linked by &&:
	[ $a = dog -o $b = dog ] && echo $?
     a. the number 1 or 0 followed by another 1 or 0 on a new
	line
     b. test: $a: integer expression expected
     c. 0
     d. no output
     e. 1







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DAT2330 - Ian Allen - Fall 2003-12-			 PRACTICE

64.  What is the output of this sequence of three shell commands:
	umask 674 ; touch newfile ; ls -l newfile
     a. --------w- 1 me me 0 Feb 20 07:55 newfile
     b. -rw-rw-r-- 1 me me 0 Feb 20 07:55 newfile
     c. -rw-rwxr-- 1 me me 0 Feb 20 07:55 newfile
     d. ---x----wx 1 me me 0 Feb 20 07:55 newfile
     e. --w--wxr-x 1 me me 0 Feb 20 07:55 newfile

65.  How many arguments are passed to the command by the shell on
     this command line:	  <cow cow "-x" -y '-z' >cow cow
     a. 3
     b. 2
     c. 4
     d. 6
     e. 5

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

67.  If foo is a script containing the line TERM=vt100 ; export
     TERM, what is the output of the following sequence of bash
     commands: TERM=linux ; ./foo ; echo $TERM
     a. foo
     b. TERM
     c. vt100
     d. linux
     e. $TERM

68.  What is the output of the following sequence of bash
     commands:	 cd /bin && echo "cd $(pwd)"
     a. cd $(pwd)
     b. bash: cd: /bin: No such file or directory
     c. no output
     d. cd /bin
     e. cd 0pwd)

69.  What is the link count of directory dir after this set of
     successful commands?
	mkdir dir ; cd dir ; touch one ; mkdir two
     a. 3
     b. 2
     c. 4
     d. 1
     e. 5











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DAT2330 - Ian Allen - Fall 2003-13-			 PRACTICE

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

71.  Which of the following shell command lines displays only the
     names in the current directory that are exactly three
     numeric digits long?
     a. echo [0-9][0-9][0-9]
     b. echo ???
     c. echo '[0-9]''[0-9]''[0-9]'
     d. echo '0-9'0-9'0-9'
     e. echo [1-3][1-3][1-3]

72.  Which of these statements is true?
     a. If /p is an empty directory, ls /p/.* produces an error
	message.
     b. The ls dir command looks up the directory argument dir in
	your $PATH.
     c. If /q is an empty directory, echo /q/.* produces an error
	message.
     d. Typing ./script and bash script always give identical
	results.
     e. Either single or double quotes will stop shell glob
	(wildcard) patterns from expanding.

73.  Which line below is most likely to be the beginning of an
     error message?
     a. echo 2>&1 "... "
     b. echo 1>&2 "... "
     c. echo 2>$1 "... "
     d. echo 2<$1 "... "
     e. echo 1<&2 "... "

74.  A shell script named foo is executed as follows:
	./foo  a  "b c d"  e
     Inside the script is the line:   echo "$2"
     What is the output from this line?
     a. b
     b. $2
     c. "b
     d. b c d
     e. a bash error message: unbound (undefined) variable

75.  If a=1 and b=2 then which of the following bash command
     lines outputs only the word hi (and nothing else)?
     a. [a!=a] || echo hi
     b. [a -ne b] || echo hi
     c. [!a = b] && echo hi
     d. [ a -ne b ] && echo hi
     e. [ a = a ] && echo hi





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DAT2330 - Ian Allen - Fall 2003-14-			 PRACTICE

76.  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 ../home/me/../etc/passwd ./me/./foo
     b. cp ../../etc/passwd /me/foo
     c. cp ./me/../etc/passwd ../home/me/foo
     d. cp ../etc/passwd ../me/foo
     e. cp me/../../etc/passwd me/foo

77.  Which command sequence below does not generate an error
     message from the last command in the sequence?
     a. cat /etc/passwd > mail idallen@ncf.ca
     b. date >foo ; cp foo/. bar
     c. mkdir one one/two ; rmdir one/two
     d. mkdir foo ; ln foo bar
     e. mkdir foo foo/bar ; rmdir foo

78.  If variable cow might contain nothing (a null value -
     defined but empty), which bash command sequence correctly
     tests for this and prints OK?
     a. if [ $cow -eq "" ] ; then echo OK ; fi
     b. if [ "$cow" = * ] ; then echo OK ; fi
     c. if [ ''$cow'' = '''' ] ; then echo OK ; fi
     d. if [ $cow -eq : ] ; then echo OK ; fi
     e. if [ "" = "$cow" ] ; then echo OK ; fi

79.  What is the output of the following sequence of bash
     commands:	 x=0 ; y=1 ; touch $x ; test ! -z $x ; echo $?
     a. the number 1 or 0 followed by another 1 or 0 on a new
	line
     b. test: $x: integer expression expected
     c. no output
     d. 0
     e. 1

80.  How many arguments and options are there to the command:
	cal -yj 1752
     a. Two arguments, one of which is a single option and the
	other is a pathname.
     b. Two arguments, neither of which is an option.
     c. A single numeric option and a three-letter file name.
     d. Two command line arguments, one of which contains two
	options.
     e. Three arguments, one of which contains options and one is
	a pathname.

81.  What is the bash shell output of this two-command sequence:
	cd /home/alleni || echo "In $(pwd)"
     a. In 0pwd)
     b. In /home/alleni
     c. no output
     d. "In $(pwd)"
     e. In $(pwd)






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DAT2330 - Ian Allen - Fall 2003-15-			 PRACTICE

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

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

84.  Which of these first lines will cause this executable file
     to be interpreted using the Bash shell?
     a. !#/bin/bash -u
     b. !/bin/bash
     c. #!/bin/bash
     d. /bin/bash -u
     e. #/bin/bash

85.  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. :dp
     b. ddp
     c. ddP
     d. DDP
     e. DDp

86.  Select the correct bash shell order of command line
     processing:
     a. aliases, redirection, variables, globs
     b. aliases, variables, globs, redirection
     c. aliases, globs, variables, redirection
     d. aliases, variables, redirection, globs
     e. redirection, aliases, globs, variables

87.  If foo is a script containing the line TERM=new ; export
     TERM, what is the output of the following sequence of bash
     commands that use foo:   TERM=bar ; ./foo ; echo $TERM
     a. $TERM
     b. foo
     c. TERM
     d. new
     e. bar










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DAT2330 - Ian Allen - Fall 2003-16-			 PRACTICE

88.  How many arguments and options are there to the command:
	wc -l <infile
     a. Three arguments, one of which contains an option and one
	is a pathname.
     b. Two arguments, one of which is a single option name and
	the other is a pathname.
     c. One command line argument containing one option name.
     d. A file name starting with a dash and an <infile switch
	option argument.
     e. Two arguments, neither of which is an option.

89.  If a bash shell script named foo contains the line:
	if [ '$1' = "$2" ] ; then echo SAME ; fi
     then which of the following command lines will produce SAME
     as output?
     a. ./foo bar '$1'
     b. ./foo 1 "$1"
     c. ./foo 'bar' "bar"
     d. ./foo $1 $1
     e. ./foo bar 'bar'

90.  What is the output of the following sequence of bash
     commands:	 wc='one two' ; test wc = wc
     a. test: too many arguments
     b. 0
     c. no output
     d. 1
     e. 1   2	8 wc

91.  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 of this command:
	cat foo foo | sort -r | head -5 | tail -1
     a. 5
     b. 6
     c. 8
     d. 7
     e. 9

92.  Which line below puts the count of the number of lines in
     the password file into the variable foo?
     a. foo=$( cat -c /etc/passwd )
     b. foo=[ wc /etc/passwd | echo $1 ]
     c. foo=$( wc -l </etc/passwd )
     d. foo=[ grep -c /etc/passwd ]
     e. foo=[ cat -l /etc/passwd ]

93.  Which bash command sequence correctly compares the two
     numbers and prints OK?
     a. if ( ! 4 < 3 ) ; then echo OK ; fi
     b. if [ 4 -gr 3 ] ; then echo OK ; fi
     c. if [ ! 4 <= 3 ] ; then echo OK ; fi
     d. if [ 4 -gt 3 ] ; then echo OK ; fi
     e. if [ 4 > 3 ] ; then echo OK ; fi






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DAT2330 - Ian Allen - Fall 2003-17-			 PRACTICE

94.  Which command line below does not show any lines from inside
     the file dog?
     a. tail dog
     b. more dog
     c. ls dog
     d. head dog
     e. less dog

95.  If bar is an executable script containing the line foo=dog
     then what is the bash output of this sequence of three
     commands: foo=cat ; ./bar ; echo "the '$foo' ate"
     a. the $foo ate
     b. the '$foo' ate
     c. the 'cat' ate
     d. the 'dog' ate
     e. the 'foo' ate

96.  What is the bash shell output of this command sequence:
	true && echo Hello     There $?
     a. no output
     b. Hello There 0
     c. Hello There ?
     d. Hello	  There ?
     e. Hello	  There 1

97.  What is the bash shell output of this two command sequence:
	PATH=/bin/ls:/bin/cat:/bin/sh ; cat nosuchfile
     a. ls: /bin/cat: command not found
     b. cat: nosuchfile: No such file or directory
     c. bash: cat: command not found
     d. bash: /bin/sh: No such file or directory
     e. bash: /bin/ls: command not found

98.  In an empty directory, what is the bash shell output of this
     three-command sequence:
	touch aa .a ab .b .c ; x='.a* .b*' ; echo '$x'
     a. .a* .b*
     b. aa .a ab .b
     c. '.a* .b*'
     d. .a .b
     e. $x

99.  What is the output of the following sequence of bash
     commands:	 cd /etc && echo "in $(pwd)"
     a. in /etc
     b. in $(pwd)
     c. bash: cd: /etc: No such file or directory
     d. no output
     e. in 0pwd)

100. Which bash command sequence correctly searches for the chars
     and then prints OK if it is found inside the password file?
     a. grep chars >/etc/passwd && echo OK
     b. grep chars >/etc/passwd || echo OK
     c. grep chars </etc/passwd || echo OK
     d. grep chars  /etc/passwd || echo OK
     e. grep chars </etc/passwd && echo OK



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DAT2330 - Ian Allen - Fall 2003-18-			 PRACTICE

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

102. What is the output of the following sequence of bash
     commands:	 a=1 ; b=2 ; test $a -ge $b ; echo $?
     a. the number 1 or 0 followed by another 1 or 0 on a new
	line
     b. 0
     c. test: $a: integer expression expected
     d. 1
     e. no output

103. If x=cow and y=dog then what is the output of the following
     sequence of bash commands:
	[ $x = dog -o $y = cow ] ; echo $?
     a. no output
     b. test: $x: integer expression expected
     c. the number 0 or 1 followed by another 0 or 1 on a new
	line
     d. 0
     e. 1

104. What is the output of the following sequence of bash
     commands:	 false && echo "linux	  rocks $?"
     a. linux	  rocks 1
     b. linux rocks 0
     c. no output
     d. linux rocks 1
     e. linux	  rocks 0

105. Which bash command sequence correctly compares the two
     numbers and prints OK?
     a. if ( ! 4 < 3 ) ; then echo OK ; fi
     b. if [ 4 > 3 ] ; then echo OK ; fi
     c. if [ 4 -gt 3 ] ; then echo OK ; fi
     d. if ( let 4 > 3 ) ; then echo OK ; fi
     e. if [ ! 4 <= 3 ] ; then echo OK ; fi

106. What is the link count of file foo after this set of
     successful commands?
     rm foo ; touch foo ; ln foo bar
     cp bar x ; ln x y ; ln bar z
     a. 1
     b. 4
     c. 5
     d. 2
     e. 3








110 Questions	    DAT2330 Practice Test - 0%		 PRACTICE



DAT2330 - Ian Allen - Fall 2003-19-			 PRACTICE

107. In an empty directory, what is the shell output of these
     three commands:
	touch xx .x xy .y xz ; a='x* y*' ; echo "$a"
     a. xx xy xz y*
     b. $a
     c. x* y*
     d. xx xy
     e. *x *y

108. If x=cow and y=dog then what is the output of the following
     sequence of bash commands:
	[ $x = cow -a $y = cow ] ; echo $?
     a. 0
     b. no output
     c. 1
     d. the number 0 or 1 followed by another 0 or 1 on a new
	line
     e. test: $x: integer expression expected

109. Which of the command lines below can generate a non-empty
     file?
     a. sort -r /a/b >/a/b
     b. tr abc ABC </a/b >/a/b
     c. grep -v /a/b /a/b >/a/b
     d. ls /a/b >/a/b
     e. tail -5 /a/b >/a/b

110. Which line below passes three separate arguments to the sort
     command when placed inside a shell script named foo invoked
     by the command line:  ./foo  111  222  333
     a. sort "$*"
     b. sort "$#"
     c. sort "$1 $2 $3"
     d. sort "$@"
     e. sort "$? $? $?"

























110 Questions	    DAT2330 Practice Test - 0%		 PRACTICE



DAT2330 - Ian Allen - Fall 2003-20-			 PRACTICE

Answer Key - DAT2330 - Ian Allen - Fall 2003 - DAT2330 Practice
			    Test - 0%

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



110 Questions	    DAT2330 Practice Test - 0%		 PRACTICE



DAT2330 - Ian Allen - Fall 2003-21-			 PRACTICE

  97. c
  98. e
  99. a
 100. e
  101. a
  102. d
  103. e
  104. c
 105. c
 106. e
 107. c
 108. c
  109. d
  110. d

Count of a:  20	 18%
Count of b:  17	 15%
Count of c:  23	 21%
Count of d:  29	 26%
Count of e:  21	 19%

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

Macro .cmd splits: 38
Macro .ans splits: 0























110 Questions	    DAT2330 Practice Test - 0%		 PRACTICE