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Week 6 Notes for CST8129
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-Ian! D. Allen - idallen@idallen.ca

*** Keep up on your readings (Course Outline: average 5 hours/week homework)

Remember - knowing how to find out an answer is more important than
    memorizing the answer.  Learn to fish!  RTFM!  (Read The Fine Manual)

VIM:
    using d? in vim movement: dd dh dj dk dl dw dG
    global search and replace:   :1,$s/a/b/

Review:
    tree, sum, cat -n, last, diff -u, stty, cut -d -f, uniq -c
    - diff is for text files only, use cmp for all (including binary) files

    New: cmp (for any files)

Fetching web pages:
    New: wget -O
    New: lynx -dump
    New: grep -A1 -e foo -e bar
    New: awk -F: '{print $5}'

    http://weatheroffice.ec.gc.ca/city/pages/on-118_metric_e.html

    lynx -dump http://weatheroffice.ec.gc.ca/city/pages/on-118_metric_e.html 
        | grep -A1 -e Temperature -e Obser

    lynx -dump http://teaching.idallen.com/cst8129/05f/notes/ \
        | grep -e exercise -e week

    New: awk -F: '{print $1}' (compare with cut -f 1)

    lynx -dump http://teaching.idallen.com/cst8129/05f/notes/ \
        | grep -e exercise -e week | grep -v http | awk '{print $2}'

New: cmp, find, groups, mail, tr, 
    write, mesg
    tr -c -d -s
    gzip, gunzip, zcat, zless, zgrep, bzip2, bunzip2, bzcat, bzless, bzgrep
    script, col -b

    Note: col -b only reads stdin!  no file names allowed.
      $ col -b <script >script.out

File system links (names):
    New: ln
    touch foo ; ln foo bar ; rm foo

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For next week (Week 7):

Shell Variables:
    shell_variables.txt  Shell Variables you should know (including $* and $@)
    New: PATH, whereis, which, LC_COLLATE

File and directory permissions:
    permissions.txt     Unix Permissions
    umask.txt           Umask and Permissions
    Review: chmod
    New: umask

Shell programming:
    Quigley: Chapter 2 (Bourne Shell and KSH only - no CSH or TCSH)
    New: export, source

O/S structure - kernel, utilities
    ps -f, pstree

Notes to review:
    week06notes.txt     Week 6 Notes for CST8129
    unix_command_list.txt     Basic Unix/Linux Command List
    shell_variables.txt  Shell Variables you should know (including $* and $@)
    permissions.txt     Unix Permissions
    umask.txt           Umask and Permissions

Readings for next week:
    exit_status.txt     Return Code, Exit Status, test, if, and while