Posts tagged prompt

bash prompt deluxe
posted on 2015-10-12 00:31:04

For quite a long time I have had the same prompt on and off, like:

[user@host ~/folder]$ 

This one was already colored. However quite a while ago I read about Steve Losh and his ZSH prompt, where he also used to show git or mercurial repository information.

After quite a while (making the exit code colored depending on wether it is zero or not is harder than it seems...), this was also added. Without further ado (or any explanation how the colors look like, here are some exmples:

REGULAR, GIT, SVN:
0 [256] 1 [ sjas@nb.dyn.sjas.de ~] 00:06:39 $ cd repo/gitolite-admin/
0 [257] 2 [ sjas@nb.dyn.sjas.de ~/repo/gitolite-admin git:[master] ] 00:06:45 $ cd ../non-modal-swing-dialog-read-only/
0 [258] 3 [ sjas@nb.dyn.sjas.de ~/repo/non-modal-swing-dialog-read-only svn:[Rev 41] ] 00:06:50 $ 

ERROR CODE as first number:
0 [258] 3 [ sjas@nb.dyn.sjas.de ~/repo/non-modal-swing-dialog-read-only svn:[Rev 41] ] 00:07:05 $ asdf
bash: asdf: command not found
127 [259] 4 [ sjas@nb.dyn.sjas.de ~/repo/non-modal-swing-dialog-read-only svn:[Rev 41] ] 00:07:07 $

The second number is the history count altogether like in the history file, the third one the count of the current session. Everything is colored, and for me it is not too long due to the colors.

This goes into the ~/.bashrc:

promptfunction() {
    local EXIT="$?"
    local VCS=""
    PS1=""
    if git branch &>/dev/null
    then
        VCS=" git:$(git show-branch | awk '{print $1}') "
    else
        if svn info &>/dev/null
        then
            VCS=' svn:[Rev '"$(svn info | \grep -i revision | awk '{print $2}')"'] '
        fi
    fi
    PS1="\[\e[3$(if [ $EXIT = 0 ]; then echo '2'; else echo '1'; fi);1m\]\$?\[\e[0m\] [\!] \# \[\e[31;1m\][\[\e[37;1m\] \u\[\e[33;1m\]@\[\e[37;1m\]$(hostname -f) \[\e[32;1m\]\w\[\e[36;1m\]$VCS\[\e[0m\]\[\e[31;1m\]]\[\e[0m\] \[\e[33;1m\]\t\[\e[0m\] \[\e[36;1m\]\\$ \[\e[0m\]"
}
export PROMPT_COMMAND=promptfunction

I could have changed the coloring such that i'd have used variables for the coloring, but by now I can read them just as well. If you want to know more about the coloring, google 'ansi escape codes'. :)

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