Linux Lab 02 Command Line

Linux Workshop

Lab 2 Command line Requirements

Quick Reference Objectives to learn

➢ Live Linux

Command line knowledge #program files do not need an extension such as .exe #directories use / instead of \

#(often no drive letters, but) mount points.

#commands & filenames are case sensitive #help with: cmd --help #prefix ./ to start a program located in the current directory #.files are hidden (starting with a dot) command -options parameters

#General command syntax

...

#Automatic cmd completion (WinXP)

...

#Completion for cmd & file choices

...<page up>

#Browse through cmd history (

history

#Show personal cmd line history

1. Go to the tmp directory

!5

#Start command 5 from history

2. How many commands can a user execute?

cmd1 ; cmd2

#Use ; for cmd concatenation

To Do from the command line

bash)

#man, info, which, type, whereis, apropos

3. How many commands can a priviliged user execute? 4. How many commands did the user already execute in the past? 5. Execute command number 1 from the command history 6. How can you search in a directory to a filename ignoring upper and lower case characters? 7. Change the prompt. Change \w in \W or reverse.

ls /etc ¦ less

#less is more

ls /etc ¦ grep -i fstab

#Filter output using grep ignoring upper case

( to quit)

nohup cmd

#Leave cmd running aft logout (hang up) #such as the screen package

cmd &

#Start cmd in background (running)



#Set program into background (stopped)

jobs

#Show background programs

bg [nr]

#Start background program (running)

xset -b

#Set sound bell for alerts = off (in X)

echo $PS

#Show prompt string variable

export PS=

#Set prompt string variable

Theory Modules LPIC 1 Certification Bible, isbn 0-7645-4772-0 ➢ p. 63 Ch. 2 Using the Shell ➢ p. 275 Ch. 7 Using Documentation ➢ p. 72-77 Environment Variables and Settings ➢ p. 527-540 Customizing the Shell Environment

Extra References ➢ www.tldp.org ➢ www.vmware.com

© October 2, 2005, wiki.novell.com/index.php/Roberts_Quick_References, author of Foundations of Linux networking