Glossary

This section contains an overview of all commands discussed in this document.

A

at

queue, examine or delete jobs for later execution

B

bash

Bourne Again SHell

batch

queue, examine or delete jobs for later execution

bg

run a job in the background

bzip2

a block-sorting file compressor

C

cancel

cancel a printjob

cat

concatenate files and print to standard output

cd

change directory

cdrecord

record a CD-R

chattr

change file attributes

chmod

change file access permissions

compress

compress files

cp

copy files and directories

crontab

maintain crontab files

csh

open a C shell

cwd

print present (current) working directory

D

date

print or set system date and time

dd

convert and copy a file (disk dump)

df

report filesystem disk usage

diff

find differences between two files

du

estimate file space usage

E

ediff

diff to English translator

egrep

extended grep

elm

electronic mail reader

emacs

start the Emacs editor

exit

exit current shell

F

fdformat

format floppy disk

fg

bring a job in the foreground

file

determine file type

find

find files

fortune

print a random, hopefully interesting adage

ftp

transfer files

G

grep

print lines matching a pattern

gnroff

emulate nroff command with groff

groff

front end to the groff document formatting system

gzip

compress or expand files

H

help

display help on a shell built-in command

I

info

read Info documents

iostat

display I/O statistics

J

jobs

list jobs

K

kill

terminate process(es)

ksh

open a Korn shell

L

less

more with features

limit

controll resources

ln

make links between files

locate

find files

logout

close current shell

lp

send requests to the LP print service

lpq

print spool queue examination program

lpr

offline print

lprm

remove print requests

lpstat

print information about the LP print service

ls

list directory content

M

mail

send and receive mail

man

read manpages

mesg

control write access to your terminal

mkdir

create directory

more

filter for displaying text one screen at the time

mutt

mail reading program

mv

rename files

N

ncftp

browser program for the ftp program

netstat

print network connections, routing tables, interface statistics, masquerade connections, and multicast memberships

nfsstat

print statistics about networked file systems

nice

run a program with modified scheduling priority

nroff

front end to the nroff document formatting system

P

passwd

change password

pg

page through text output

pico

simple text editor

pine

a Program for Internet News and Email

ping

send echo request to a host

pr

convert text files for printing

procmail

autonomous mail processor

ps

report process status

pstree

display a tree of processes

ptree

display a tree of processes

pwd

print present working directory

Q

quota

display disk usage and limits

R

rcp

remote copy

renice

alter priority of a running process

rlogin

remote login (telnet)

rm

remove a file

rmdir

remove a directory

rsh

remote shell

S

scp

secure remote copy

screen

screen manager with VT100 emulation

set

display, set or change variable

setterm

set terminal attributes

sh

open a standard shell

sleep

wait

sort

sort lines of text files

ssh

secure shell

su

switch user

T

tail

output the last part of files

talk

talk to a user

tar

tar archiving utility

tcsh

open a Turbo C shell

telnet

user interface to the TELNET protocol

tin

news reading program

time

time a simple command or give resource usage

top

display top CPU processes

touch

change file timestamps

troff

format documents

U

ufsdump

dump ufs file systems

ufsrestore

restore ufs file systems from backup media

ulimit

controll resources

umask

set user file creation mask

uncompress

decompress compressed files

uptime

display system uptime and average load

V

vi

start the vi editor

vmstat

report virtual memory statistics

W

w

show who is logged on and what they are doing

which

shows the full path of (shell) commands

who am i

print effective userid

write

send a message to another user

X

xcdroast

graphical front end to cdrecord

xhost

server access control program for X

xload

system load average display for X

xterm

terminal emulator for X

Y

yppasswd

change NIS password

Z

zcat

compress or expand files

zgrep

search possibly compressed files for a regular expression

zmore

file perusal filter for crt viewing of compressed text