How to customize and change color of the bash login prompt in Linux

by
There are various method we can use to customize and change the colour of the login prompt of your bash shell in Linux.

Follow below link to customize or change the view of the login prompt

Below are some of the colour codes

Black           -> 30
Red            -> 31
Green           -> 32
Yellow         -> 33
Blue           -> 34
Magenta         -> 35
Cyan            -> 36
White           -> 37
Bright Black    -> 90
Bright Red      -> 91
Bright Green    -> 92
Bright Yellow  -> 93
Bright Blue     -> 94
Bright Magenta -> 95
Bright Cyan     -> 96
Bright White    -> 97

Octal Method

start   -> 33[0m
end     -> 33[m

Bash Method

start   -> e
end     -> e[m

IMPORTANT NOTE: Additional escape characters must be added for PS1 variable so that bash can interpret them correctly, without which you may face problem while searching for history or running history based commands using 'ctrl +r'

Below additional prompt must be added additionally

start   -> [
end     -> ]

Using Octal Format

My login prompt

[root@golinuxhub ~]#

Change the color of the prompt to 'RED'

# export PS1='[33[31m][u@h ~]# [33[m]'

Below image shows complete list of color codes

Similarly you can modify the command to change the prompt to different colors, you only need to care about below format while using the above command

start   -> [33[31m]  <-- Here modify '31m' with the color number
end     -> [33[m]    <-- to reset the terminal or else your commands would also appear with the same color

Using Bash Format

My login prompt

[root@golinuxhub ~]#

Change the color of the prompt to 'YELLOW'

# export PS1='[e[33m][u@h]#[e[m] '

Change the color of the prompt to "BRIGHT WHITE"

# export PS1='[e[97m][u@h]#[e[m] '

Below image shows complete list of color codes

Similarly you can modify the command to change the prompt to different colors, you only need to care about below format while using the above command

start   -> [e[33m]  <-- Here modify '31m' with the color number
end     -> [e[m]    <-- to reset the terminal or else your commands would also appear with the same color

I hope the article was useful.