Edit

bash

  • Setting Bash Prompt to username@hostname: PS1="\u@\h"

  • Reset to default settings:

    • export PS1=""

  • https://phoenixnap.com/kb/change-bash-prompt-linux

  • PS stands for Prompt Statement. Here are the different meanings for the different parts of the BASH prompt:

    • PS1 – This is the primary prompt display. This is where you set special characters or important information.

    • PS2 – This is the secondary prompt string. This is usually set as a divider between the prompt display and the text entry. It is also used to display when a long command is broken into sections with the \ sign.

    • PS3 – This is the prompt for the select command.

    • PS4 – This is the prompt for running a shell script in debug mode.

List of Bash Prompt Options

  • \a - A bell character

  • \d - Date (day/month/date)

  • \D{-ormat} - Use this to call the system to respond with the current time

  • \e - Escape character

  • \h - Hostname (short)

  • \H - Full hostname (domain name)

  • \j - Number of jobs being managed by the shell

  • \l - The basename of the shells terminal device

  • \n - New line

  • \r - Carriage return

  • \s - The name of the shell

  • \t - Time (hour:minute:second)

  • @ - Time, 12-hour AM/PM

  • \A - Time, 24-hour, without seconds

  • \u - Current username

  • \v - BASH version

  • \V - Extra information about the BASH version

  • \w - Current working directory ($HOME is represented by ~)

  • \W - The basename of the working directory ($HOME is represented by ~)

  • ! - Lists this command’s number in the history

  • # - This command’s command number

  • $ - Specifies whether the user is root (#) or otherwise ($)

  • \ - Backslash

  • [ - Start a sequence of non-displayed characters (useful if you want to add a command or instruction set to the prompt)

  • ] - Close or end a sequence of non-displayed characters

Change Bash Prompt Color

  • export PS1="\e[0;32m[\u@\h \W]$ \e[0m"

    • \e[ – Begin color changes

    • 0;32m – Specify the color code

    • [\u@\h \W]$ – This is the code for your normal BASH prompt (username@hostname Workingdirectory $)

    • \e[0m – Exit color-change mode

Color Code

  • The first number in the color code specifies the typeface:

    • 0 – Normal

    • 1 – Bold (bright)

    • 2 – Dim

    • 4 – Underlined

  • The second number indicates the color you want:

    • 30 – Black

    • 31 – Red

    • 32 – Green

    • 33 – Brown

    • 34 – Blue

    • 35 – Purple

    • 36 – Cyan

    • 37 – Light gray

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