Command/Syntax

Response

apropos keyword

Locate commands by keyword lookup

alias command-string target

Alias commands

cat [options] file

Concatenate a file/files

cd [directory]

Change directory

chgrp [options] group file

Change group of file

chmod [options] file

Change file permissions

chown [options] owner file

Change file owner

clear

Clear screen

compress [options] file

Compress file to file.Z

date [options]

Display current date and time

diff [options] file1 file2

Compare two files and display the differences

df [options] [resources]

Disk device summary

du [options] [dir or file]

filesystem space usage

echo [text string]

Echo string to standard output

emacs [options] file

Text editor

exit

Exit from shell

file [options] file

Classify file types

find dir [options] [action]

Find files

grep [options] string file

Search for string in file

gzip [option] file

Compress file to file.gz

gunzip [options] file

Uncompress a file.gz file

kill [options] pid

Send signal to process

ln [options] source target

Link source file to target

logout

End session

lpr [options] file

Print file

ls [options] dir/file/files

List directory or files

man [options] command

Show manual pages

mkdir [options] dir

Make directory

more [options] file

Page through an ascii file

mv [options] file1 file2

Move file1 to file2

passwd [options]

Change user password

ps [options]

Show process status

pwd

Print working directory

rm [options] file

Remove file

rmdir [options] dir

Remove directory

setenv VAR “text setting”

Set environmental variable

source file

Read/execute shell setting/commands from file

ssh user@ipaddress

Secure shell- remote logins

scp file user@ipaddress:file

Secure file transferes

scp user@ipaddress:file file

tar [options] files/dir

File archiver

uncompress file.Z

Uncompress file.Z to file

wc [option] file

Count lines, words, & chars

which command

Show path to command

who

Show who's logged on