Getting in and out

login

Log into the system

rlogin

Log into another system

passwd

Change your password

logout

Leave the system

File utilities

mv

Move (rename) files

cp

Copy files

rm

Remove files

cat

Display, concatenate files

more

Page through files

sort

Sort a file

diff

Find differences in files

cmp

Compare files

comm

Find common lines

uniq

Remove repeated lines

chmod

Change permissions of files

vi

Edit file

joe

A simple editor for files

emacs

A complex editor for files

jove

Another editor for files

Special Characters

!

History recall

\

Quote character

*

All match

?

One character match

[]

Match a set of characters

^

History substitution

%

Job referencing

&

Put job in background

'

Quote characters

-

Denotes an option

I/O Redirection

c > f

c into f

c < f

f into c

c < f > o

f into c output into o

c >> f

Add output of c to f

c >! f

Overwrite f from c output

c >& f

Put c output & errors into f

p | n

Pipe p into n

p |& n

Pipe p and errors into n

`c`

Quote output of c

Printing

lpr

Print a file

lpq

Check the printer

lprm

Remove print job

Common Utilities

date

Print date and time

script

Save a transcript of a job

clear

Clear the screen

mail or elm

Send/read e-mail

trn

Read USENET news

talk

Open a conversation

head

Display the first few lines of a file

tail

Display the last few lines of a file

finger

Find out who's on

groups

Find out what group you're in

quota -v

Check your quota

man

Display manual pages

grep

Find a string in a file

find

Find a file in a directory

du

Display disk usage

ftp

File transfer between machines

rlogin

Log into a UNIX system

telnet

Log into non-UNIX system

tn3270

Log into IBM systems

balance

Show your account balance

sysinfo

Read relevant system information

msgs

Read important system messages

Compilers and program utilities

cc

C compiler

gcc

GNU C compiler

f77

FORTRAN 77 compiler

pc

Pascal compiler

dbx

Debugger for cc, pc, f77

Processes

jobs

Show jobs

ps

Show process status

kill

Terminate a job

stop

Suspend a job

fg

Bring a job to foreground

bg

Resume job in background

exit

Leave a non-login shell session

Control-Z

One keypress to suspend a job

Control-C

One keypress to kill a job

Control-D

One keypress for end-of-file (EOF)

csh Shell Variables

term

What terminal you are using

path

Search path for commands

filec

Complete file names with ESC

ignoreeof

Can't use ^D to logout

noclobber

No overwrite w/ I/O redirection

prompt

The shell prompt

Files in your directory

.

The current directory

..

The parent directory

.cshrc

Paths, settings and aliases

.login

Reminders, tedious tasks

.logout

Commands done w/ logout

.mailrc

Default mail configuration

.forward

Address to forward to

.exrc

Startup for vi

.plan

Your 'plan' (for finger)

.project

Your 'project' (for finger)

.msgsrc

Record for msgs

.rhosts

The access file for your account

News

Directory for saved news articles

mbox or Mail

Your mail

core

A core dump

a.out

A compiled program

Using Directories

mkdir

Make a directory

ls

List directory contents

cd

Change directory

pwd

Print working directory

pushd

Push a directory on the stack

popd

Pop a directory off the stack

dirs

Print the directory stack

csh Shell Commands

alias

Assign/display aliases

unalias

Remove aliases

set

Declare/display shell variables

unset

Remove shell variables

setenv

Set environment variables

unsetenv

Remove environment variables

printenv

Print environment variables

rehash

Re-establish commands

source

Execute shell scripts

history

Print history of commands

Environment Variables

PRINTER

Default printer

MANPATH

Search path for man pages

PAGER

Default screen page reader

VISUAL

Default screen editor

EDITOR

Default editor

EXINIT

vi configurations

HOME

Your home directory

TERM

Terminal type

USER

Your User ID

SHELL

The shell you are using