Elapsed and execution time for commands in ZSH

zsh-elapsed-time.md

Elapsed and execution time display for commands in ZSH

Append this to your ~/.zshrc file.

function preexec() {
  timer=$(($(date +%s%0N)/1000000))
}

function precmd() {
  if [ $timer ]; then
    now=$(($(date +%s%0N)/1000000))
    elapsed=$(($now-$timer))

    export RPROMPT="%F{cyan}${elapsed}ms %{$reset_color%}"
    unset timer
  fi
}

Remixed from @adri's snippet.

here is my idea of a simple prompt with random colors and also a slightly modified way of showing the numbers, having a 2 part place holder prompt when starting zsh and a 3 part prompt with elapsed time, also includes black and white part for error-ed out commands

had some help from here for making the random colors in the function part of the prompt work

PROMPT='%F{$(($RANDOM%6+1))}[%f%D{%H:%M}%F{$(($RANDOM%6+1))}] %F{$(($RANDOM%6+1))}[%f$(shrink_path -f)%F{$(($RANDOM%6+1))}]%f '

function preexec() {
  timer=$(date +%s%3N)
}

function precmd() {
  if [ $timer ]; then
    local now=$(date +%s%3N)
    local d_ms=$(($now-$timer))
    local d_s=$((d_ms / 1000))
    local ms=$((d_ms % 1000))
    local s=$((d_s % 60))
    local m=$(((d_s / 60) % 60))
    local h=$((d_s / 3600))
    if ((h > 0)); then elapsed=(${h}h ${m}m)
    elif ((m > 0)); then elapsed=(${m}m ${s}s)
    elif ((s >= 10)); then elapsed=${s}.$((ms / 100))s
    elif ((s > 0)); then elapsed=${s}.$((ms / 10))s
    else elapsed=${ms}ms
    fi

	psvar=("$(shrink_path -f)" "$elapsed" "[" "]")
	local ok="%F{$((RANDOM%6+1))}%3v%f%D{%H:%M}%F{$((RANDOM%6+1))}%4v %F{$((RANDOM%6+1))}%3v%f%1v%F{$((RANDOM%6+1))}%4v %F{$((RANDOM%6+1))}%3v%f%2v%F{$((RANDOM%6+1))}%4v%f "
	local err="%K{7}%F{0}%3v%D{%H:%M}%4v%k %K{7}%3v%1v%4v%k %K{7}%3v%2v%4v%k%f "
	PROMPT="%(?.$ok.$err)"

    unset timer
  fi
}

Shows execution time at the end of the prompt

OG_PROMPT=$PROMPT
function preexec() {
  timer=$(($(date +%s%0N)/1000000))
}

function precmd() {
  if [ $timer ]; then
    now=$(($(date +%s%0N)/1000000))
    elapsed=$(($now-$timer))

    export PROMPT="$OG_PROMPT%F{cyan}${elapsed}ms %{$reset_color%}> "
    unset timer
  fi
}