bash prompt 설정

https://martin.ankerl.com/2016/11/04/linux-bash-prompt/

Linux Bash Prompt

function prompt_timer_start {
    PROMPT_TIMER=${PROMPT_TIMER:-`date +%s.%3N`}
    echo -ne "\033]0;${@}\007"
}

function prompt_svn_stats() {
    command -v svn >/dev/null
    if [ $? != 0 ]; then
        return
    fi

    local WCROOT=`svn info --show-item wc-root 2>/dev/null`
    if [ -z "$WCROOT" ]; then
        return
    fi

    local SVN_INFO=`svn info ${WCROOT} 2>/dev/null`
    local CHECKEDOUTURL=`echo "${SVN_INFO}" |sed -ne 's#^URL: ##p'`
    local REV=`echo "${SVN_INFO}" |sed -ne 's#^Revision: ##p'`
    local ROOTURL=`echo "${SVN_INFO}" |sed -ne 's#^Repository Root: ##p'`
    echo " (\e[32m${CHECKEDOUTURL/$ROOTURL\//}\e[1;30m@\e[0;100m${REV})"
}

function prompt_timer_stop {
    local EXIT="$?" # MUST come first
    local NOW=`date +%s.%3N` # should be high up, for accurate measurement
    echo -ne "\033]0;$USER@$HOSTNAME: $PWD\007"

    local ELAPSED=$(bc <<< "$NOW - $PROMPT_TIMER")
    unset PROMPT_TIMER

    local T=${ELAPSED%.*} 
    local AFTER_COMMA=${ELAPSED##*.}
    local D=$((T/60/60/24))
    local H=$((T/60/60%24))
    local M=$((T/60%60))
    local S=$((T%60))

    local TIMER_SHOW=
    [[ $D > 0 ]] && TIMER_SHOW=${TIMER_SHOW}$(printf '%dd ' $D)
    [[ $H > 0 ]] && TIMER_SHOW=${TIMER_SHOW}$(printf '%dh ' $H)
    [[ $M > 0 ]] && TIMER_SHOW=${TIMER_SHOW}$(printf '%dm ' $M)
    TIMER_SHOW=${TIMER_SHOW}$(printf "%d.${AFTER_COMMA}s" $S)  

    PS1="\e[0m\n" # begin with a newline
    if [ $EXIT != 0 ]; then
        PS1+="\e[1;41m ✘ ${EXIT}" # red x with error status
    else
        PS1+="\e[1;42m ✔" # green tick
    fi
    PS1+=" \e[0;100;93m `date +%H:%M`" # date, e.g. 17:00

    #local PSCHAR="┕▶"
    local PSCHAR="▶"
    if [ $(id -u) -eq 0 ]; then
        PS1+=" \e[1;31m\h " # root: red hostname
        PSCHAR="\e[1;31m#\e[0m"
    else
        PS1+=" \e[1;32m\h " # non-root: green hostname
    fi
    PS1+="\e[1;94m\w" # working directory

    GIT_PS1_SHOWDIRTYSTATE=true # * unstaged, + staged
    GIT_PS1_SHOWSTASHSTATE=true # $ stashed
    GIT_PS1_SHOWUNTRACKEDFILES=true # % untracked
    GIT_PS1_SHOWCOLORHINTS=true
    # < behind, > ahead, <> diverged, = same as upstream
    GIT_PS1_SHOWUPSTREAM="auto" 
    # git with 2 arguments *sets* PS1 (and uses color coding)
    __git_ps1 "${PS1}\e[0;100m" "\e[0;100m"

    # try to append svn
    PS1+=`prompt_svn_stats`

    PS1+=" \e[0;100;93m${TIMER_SHOW}" # runtime of last command
    PS1+=" \e[0m\n${PSCHAR} " # prompt in new line
    #PS1+="\e[K\e[0m\n${PSCHAR} " # prompt in new line
}

# see https://gnunn1.github.io/tilix-web/manual/vteconfig/
if [ $TILIX_ID ] || [ $VTE_VERSION ]; then
        source /etc/profile.d/vte.sh
fi

 
trap 'prompt_timer_start "$BASH_COMMAND (`date +%H:%M:%S`)"' DEBUG
PROMPT_COMMAND=prompt_timer_stop