Bash Linux commands

Conditionally perform a command

if

Configure a network interface

ifconfig

Stop a network interface

ifdown

Start a network interface up

ifup

Capture an X server screen and save the image to file

import

Copy files and set attributes

install

Join lines on a common field

join

Stop a process from running

kill

Kill processes by name

killall

Display output one screen at a time

less

Perform arithmetic on shell variables •

let

Make links between files

ln

Create variables •

local

Find files

locate

Print current login name

logname