Install colorization for PS1 in bash.

bashrc_ps1_install.sh

#!/usr/bin/env bash
###################################
# PS1 color for .bashrc file
#
# curl -Ls https://gist.github.com/andkirby/389f18642fc08d1b0711d17978445f2b/raw/bashrc_ps1_install.sh | bash
# curl -Ls https://bit.ly/bash-ps1 | bash
###################################
touch ~/.bashrc
if ! cat ~/.bashrc | grep '# Colorize PS1 console' > /dev/null; then
    echo >> ~/.bashrc
    if [[ "$(uname -a)" =~ 'Msys' ]]; then
        curl -Ls https://gist.github.com/andkirby/389f18642fc08d1b0711d17978445f2b/raw/bashrc_ps1_win_git_bash >> ~/.bashrc
    else
        # Unfortunately, this approach doens't work in GitBash. It cannot work with status code.
        curl -Ls https://gist.github.com/andkirby/389f18642fc08d1b0711d17978445f2b/raw/bashrc_ps1_linux >> ~/.bashrc
    fi
    echo 'PS1 has been updated in ~/.bashrc. Please run'
    echo '  $ . ~/.bashrc'
else
    echo 'You have already installed "Colorize PS1 console".' > /dev/stderr
    echo 'If you need to replace it, please remove it first in your ~/.bashrc file.' > /dev/stderr
fi

bashrc_ps1_linux

# Colorize PS1 console

# Custom function to shorten the path
# Params:
#   PATH (optional)
#   MAX_LENGTH (optional)
shorten_path() {
    local path=${1:-$(pwd)}
    local max_length=${2:-40}
    if [ "${#path}" -gt "$max_length" ]; then
        local dir_array=( $(echo "$path" | tr '/' '\n') )
        local dir_count=${#dir_array[@]}
        if [ "$dir_count" -gt 4 ]; then
            path="/${dir_array[1]}/${dir_array[2]}/.../${dir_array[$dir_count-1]}"

            local index=1 dir_item
            while [[ "$(( ${#dir_item} + ${#path} ))" -le "$max_length" ]]; do
                ((index=index+1))
                dir_item=${dir_array[$dir_count-$index]}
                path=${path/\.\.\./".../"${dir_item}}
            done
        fi
    fi
    echo "$path"
}

# curl -Ls https://gist.github.com/andkirby/389f18642fc08d1b0711d17978445f2b/raw/bashrc_ps1_install.sh | bash
PS1="\n\[\033[01;37m\]\$? "
PS1=${PS1}"\$(if [[ \$? == 0 ]]; then echo \"\[\033[01;32m\]\342\234\223\"; else echo \"\[\033[01;31m\]\342\234\227\"; fi)"
PS1=${PS1}" $(if [[ ${EUID} == 0 ]]; then echo '\[\033[01;31m\]\h'; else echo '\[\033[0;32m\]\u@\h'; fi)"
PS1=${PS1}" \[\033[00m\]\D{%T}\[\033[0;33m\] "'`shorten_path`'"\[\033[00m\] \n\$ "
# EOF Colorize PS1 console

bashrc_ps1_win_git_bash

# Colorize PS1 console (GitBash for Windows)
# curl -Ls https://bit.ly/bash-ps1 | bash
# curl -Ls https://gist.github.com/andkirby/389f18642fc08d1b0711d17978445f2b/raw/bashrc_ps1_install.sh | bash

# Custom function to shorten the path
# Params:
#   PATH (optional)
#   MAX_LENGTH (optional)
shorten_path() {
    local path=${1:-$(pwd)}
    local max_length=${2:-40}
    if [ "${#path}" -gt "$max_length" ]; then
        local dir_array=( $(echo "$path" | tr '/' '\n') )
        local dir_count=${#dir_array[@]}
        if [ "$dir_count" -gt 4 ]; then
            path="/${dir_array[1]}/${dir_array[2]}/.../${dir_array[$dir_count-1]}"

            local index=1 dir_item
            while [[ "$(( ${#dir_item} + ${#path} ))" -le "$max_length" ]]; do
                ((index=index+1))
                dir_item=${dir_array[$dir_count-$index]}
                path=${path/\.\.\./".../"${dir_item}}
            done
        fi
    fi
    echo "$path"
}

PS1="\[\033]0;\n\[\033[01;37m\]\$? "
PS1+="\[\033[0;35m\]\h\[\033[00m\] \D{%T} \[\033[33m\]"'`shorten_path`'"\[\033[36m\]"'`__git_ps1`'"\[\033[0m\]"
PS1+="\n"
PS1+="\$(if [[ \$? == 0 ]]; then echo \"\[\033[01;32m\]\342\234\223\"; else echo \"\[\033[01;31m\]\342\234\227\"; fi) "
PS1+="\[\033[0m\]$ "
# EOF Colorize PS1 console (GitBash for Windows)

bashrc_ps1_win_git_bash_v1

# Colorize PS1 console (GitBash for Windows)
# curl -Ls https://gist.github.com/andkirby/389f18642fc08d1b0711d17978445f2b/raw/bashrc_ps1_install.sh | bash
PS1="\[\033]0;\n\[\033[01;37m\]\$? "
PS1=${PS1}"\[\033[0;35m\]\h\[\033[00m\] \D{%T} \[\033[33m\]\w\[\033[36m\]"'`__git_ps1`'"\[\033[0m\]"
PS1=${PS1}"\n"
PS1=${PS1}"\$(if [[ \$? == 0 ]]; then echo \"\[\033[01;32m\]\342\234\223\"; else echo \"\[\033[01;31m\]\342\234\227\"; fi) "
PS1=${PS1}"\[\033[0m\]$ "
# EOF Colorize PS1 console

Add PS1 colorization in bash.
Just run:

$ curl -Ls https://gist.github.com/andkirby/389f18642fc08d1b0711d17978445f2b/raw/bashrc_ps1_install.sh | bash
$ . ~/.bashrc

It will add a content of this gist according to your OS type (Windows or other).

Short URL:

curl -Ls https://bit.ly/bash-ps1 | bash

Added path shortening. E.g.: /G/stm/.../apps/python/a/b/c/d/a/b/c/d
It will keep the whole path length not longer than 40 symbols by default.
It will start replacing directories starting from 3rd with "..." (would be tricky for a single letter directories 😉, but it's a rare case)

Custom installation of shorten_path

1. Copy function code (find function shorten_path() in the code above) into .bashrc file
2. Replace \w with shorten_path function in your PS1 declaration.

• if your string is double-quoted: "... \w ..." → "... "'`shorten_path`'" ...".
• if your string is single-quoted: '... \w ...' → '... `shorten_path` ...'.

Result: