Terminal Prompt (draft)

Date: 2017-04-28 18:52:40 +0000

Sources: My Extravagant Zsh Prompt (Steve Losh), gitstuff/gitprompt.sh (jcgoble3)

I find myself using the terminal in Linux more and more to come to the point that I’m almost always looking for the prompt when scrolling back and forth the terminal output. As a recent full-time Linux user, there are still a lot of things to be explored and the terminal prompt is one of them. I have put off using the terminal aside from teeny weeny tasks. To attract me more to use the terminal, I decided to pimp my prompt.

I used the character  (\uE0B0) to separate sections of the prompt. The prompt is divided into sections as the user/system, current directory and the git repository info.

User/System

The Bash escape sequence \u is expanded into the currently logged user and \h into hostname. If a user joe is currently logged in the system at some host named server then \u.\h would be expanded as joe.server.

Current Directory

`git` Repository Info

A smart mark at the end of the prompt:

± for Git,
☿ for Mercurial,
‡ for Subversion,
‡± for Git-Subversion,
⌘ for Fossil,
$ or % for a simple user, in red if you have sudo rights, a red # for the root user.

PS1='\e[30;42m \u.\h '$'\e[0;32m\uE0B0'$'\e[30;47m\uE0B0'$'\e[2;30;47m \w '$'\e[00;37m\uE0B0'$'$(git_prompt)'$'\n\e[00;32m\$\e[0m '

The following code has been scavenged from around the web and may or may not be the best of doing things but I find them to work well so far.

Prompt Variables

Colors

Make the foreground color black and the background green \e[30;42m. We use the special character at the end but we have to invert the colors like \e[32;49m\uE0B0.

Scripts

repo_type() {
    # http://stevelosh.com/blog/2010/02/my-extravagant-zsh-prompt/
    git branch >/dev/null 2>/dev/null && echo '±' && return
    hg root >/dev/null 2>/dev/null && echo '☿' && return
    #echo '○'
}

git_branch() {
    # Query the git branch
    # If NOT in a git repository, the output (STDERR) will be sent to /dev/null
    # otherwise, filter the git branch output with the asterisk (*) which marks
    # the active branch.
    git branch --no-color 2> /dev/null | sed -e '/^[^*]/d' -e 's/* \(.*\)/\1/'
}

git_status() {
    # https://github.com/jcgoble3/gitstuff/blob/master/gitprompt.sh
    # Outputs a series of indicators based on the status of the
    # working directory:
    # + changes are staged and ready to commit
    # ! unstaged changes are present
    # ? untracked files are present
    # S changes have been stashed
    # P local commits need to be pushed to the remote
    local status="$(git status --porcelain 2>/dev/null)"
    local output=''
    [[ -n $(egrep '^[MADRC]' <<<"$status") ]] && output="$output+"   # +
    [[ -n $(egrep '^.[MD]' <<<"$status") ]] && output="$output!"
    [[ -n $(egrep '^\?\?' <<<"$status") ]] && output="$output?"
    [[ -n $(git stash list) ]] && output="${output}S"
    [[ -n $(git log --branches --not --remotes) ]] && output="${output}P"
    #[[ -n $output ]] && output="|$output"  # separate from branch name
    echo $output
}

git_prompt() {
    local branch=$(git_branch)
    if [[ -n $branch ]]; then
        local state=$(git_status)
        if [[ -n $state ]]; then
            #echo -e "\e[30;104m\uE0B0\e[30;104m $branch $state \e[94;40m\uE0B0"
            echo -e "\e[1;33m $branch $state "
        else
            # clean repo
            local smiley="\u263b"
            local black_flag="\u2691"
            #echo -e "\e[30;104m\uE0B0\e[30;2;104m $branch $smiley \e[94;40m\uE0B0"
            echo -e "\e[1;32m $branch $black_flag "
        fi
    #else
        #echo -e '\n\e[00;32m'$'\e[30;42m \u@\h '$'\e[0;32m\uE0B0'$'\e[30;47m\uE0B0'$'\e[2;30;47m \w '$'\e[00;37m\uE0B0'$'\n\e[00;32m\$\e[0m '
    fi
}

PS1='\e[30;42m \u@\h '$'\e[0;32m\uE0B0'$'\e[30;47m\uE0B0'$'\e[2;30;47m \w '$'\e[00;37m\uE0B0'$'$(git_prompt)'$'\n\e[00;32m\$\e[0m '

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terminal
git