Change bash command prompt in Debian

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$ vi /etc/bash.bashrc
Add this at the end:

# If id command returns zero, you have root access.
if [ $(id -u) -eq 0 ];
then # you are root, set red colour prompt
   PS1="\\[$(tput setaf 1)\\][\\u@\\h:\\w] (apps)# \\[$(tput sgr0)\\]"
else # normal
   PS1="[\\u@\\h:\\w] (apps)$ "
fi