Unix, tcsh and emacs

Tom Kelliher, CS23

Feb. 14, 1996

tcsh

• Extension of csh
• See tcsh(1)
• Useful features:
  • Command line editing ( emacs-style commands)
  • Previous command recall
  • Filename completion (enabled by setting filec)

Basic material in chapter 6 of A&L

Common Wildcards

• * --- matches any (possibly empty) sequence of characters
• ? --- matches any single character

Examples:

• rm *
• less hw?.cc

Turning wildcards, special meanings, off: quoting

• Backslash quotation: single character ``unquoting''
• Single quotation: literal text
• Double quotation: weaker quotation
• Back quotation: run command and substitute output

Background/Foreground

Running a job in the background: &

Putting a foreground job in the background: ^z, bg

Other Shell Commands

1. alias, unalias
2. fg
3. jobs
4. set, unset
5. setenv, unsetenv

Initialization Files

• .cshrc
• .login

``Standard'' Shell Variables

1. cwd
2. filec
3. history
4. home
5. ignoreeof
6. mail
7. noclobber
8. path
9. prompt --- You might try:

   set prompt="\
   %m:%~\
   %% "
   

10. shell
11. term
12. tty
13. user

``Standard'' Environment Variables

1. USER
2. HOME
3. PAGER
4. LESS
5. TERM
6. BLOCKSIZE
7. PATH
8. SHELL
9. HOST
10. PWD
11. PRINTER
12. TERMCAP

Shell Control Characters

1. ^s
2. ^q
3. ^c
4. ^u
5. ^p
6. ^n
7. ^d
8. ^z
9. ^r --- reprint
10. ^h

Email

1. pine ( pico)
2. emacs's Rmail

vi

is a four letter word

emacs

1. Extremely powerful, flexible
2. A real memory hog
3. Build on top of elisp
4. Can be confusing, frustrating to learn

Where to begin with emacs? C-h t!!