<aside> π§© Linux help
man pages
man - K βkeywordβ
whatis
apropos
info
which
whereis
man man β help to identify the man page number of the specified tasks.
Navigate man pages :

</aside>
<aside> π Input, Output, Errors
</aside>
<aside> π Text Editors
<aside> π Variable [VERY IMPORTANT]
Local Var
Env Var [Environment Variable]
All the terminals associated with the user profile
set the value of environment var=awadesh
to unset β unset var
push paticular variable β export var
editng the profile file and make it permanent
β ls -a
β vi .bash_profile
β export var=βawadesh RHCSAβ β save the file.
β restart the system
β echo $var
Controlling the setting of how we can change the environment setting
set | less
echo $PS1
PS1=β<path_of_PS1>β β PS1=ββ
</aside>
<aside> π User Management
3 categories
eg: awad : x : 1000: 1000: awad: / home/ awad: /bin/bash
Shadow file β /etc/shadow
/etc/group
useradd lpu2 β adding user
usermod -u 5000 lpu2 β changing the user id
usermod -g 1001 lpu2 β changing group name
tail -l /etc/passwd β
usermod -s /bin/sh awadesh β changing the shell
userdel lpu10 β delete the user
userdel -r lpu10 β delete user with home directory
pwunconv β disables the shadow file and the password which used to go to the shadow file will be visble along with the passwd file
pwconv β enables shadow file

getent β get all the members details
</aside>