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Overview
Basic System Usage
- Shells
- Overview of UNIX operating system
Directory/Filesystem Layout
- files, directories, directory structures
- home directory vs. working directory
- paths: absolute and relative
Basic commands
- filesystem navigation: cd, ls, pwd
- file manipulation: cp, mv, rm
- basic wildcards (*, ?)
- online documentation (man)
File Creation/Editing/Displaying
- echo, cat, more, head, tail
- jot, vi
- diff
File Parsing/Manipulation
- grep, sed, sort, uniq, cut
- awk
Redirection/Pipes
- stdin (<), stdout (>, >>), stderr (>&,
>>&)
- pipes (cmd1 | cmd2 | cmd3)
- tee and |&
Command history
- history
- !!, !$, !4, !jot, ^sdf^sde
Machine Environment
- telnet, rlogin, rsh, rcp, ssh, scp
- df, du
- ps, top, who
- osview
- hostname, date
- compress, uncompress, gzip, gunzip
User Unix Environment
- .bashrc, .alias, .login, source command
- alias, unalias, env
- environment variables, path, setenv
- rehash, which
Shell Scripts
- #!/bin/bash
- command line parsing: argv, argc, $argnum
- bc
- commenting
- exit
Variables, Loops and Conditionals
- variables: $ representation, arrays, set, @ (integer math for
variables)
- evaluation of conditions - true/1, false/0, && (and),
|| (or), ! (negation)
- `cmd` for variable setting, foreach loops, etc.
- if, foreach, while
Job control
- jobs, &, ctrl-z, ctrl-c, bg, fg
- sleep, at
- kill, killall
Back-ups
Image Utilities
- image formats, channels and bit depth, sequence numbering,
etc.
- fcheck, file, xv
- Image Utilities and NetPBM
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