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Unfortunately not many of those esoteric examples are useful. Even slightly more complex on such as There is also perversions in a forms of esoteric colorizing schemes .

A modest usage of colorizing schemes (for example red for root, blue for a regular users) is useful, but after that the return on investment diminishes drastically.

Enhancing Shell Prompts by Daniel Robbins ([email protected]) President-CEO, Gentoo Technologies, Inc.

September 2000 Why stick with the standard boring shell prompt when you can easily make it colorful and more informative?

Shell prompts are useful tools that simplify life of sysadmins and regular users alike, if set correctly.

They became an esoteric art in bash as bash has special macros for PS1-PS4 that simplify construction of complex shells.

$CMDFILE' $PROMPTSIG and then put this executable script (without the indentation!

Let us say when you login as root/superuser, you want to get visual confirmation using red color prompt.

Open /etc/bashrc (Redhat and friends) / or /etc/bash.bashrc (Debian/Ubuntu) or /etc/bash.bashrc.local (Suse and others) file and append following code: # If id command returns zero, you’ve root access.

if [ $(id -u) -eq 0 ]; then # you are root, set red colour prompt PS1="\[$(tput setaf 1)\]\[email protected]\h:\w #\[$(tput sgr0)\]" else # normal PS1="[\[email protected]\h:\w] $" fi Close and save the file.

To distinguish between superuser and normal user you use last character in the prompt, if it changes from $ to #, you have superuser privileges.

So let us set your prompt color to RED when you login as root, otherwise display normal prompt.

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