Timed Terminal Commands

Lesser Known Trick. Add this to ~/.zshrc or anything equivalent.

Mac

bash


preexec() {    timer=$(gdate +%s.%N)}
precmd() {    if [ -n "$timer" ]; then        now=$(gdate +%s.%N)        elapsed=$(echo "$now - $timer" | bc)
        # Convert elapsed time to hours, minutes, and seconds        hours=$(echo "$elapsed/3600" | bc)        minutes=$(echo "($elapsed%3600)/60" | bc)        seconds=$(echo "$elapsed%60" | bc)
        # Format the timer display        timer_show=$(printf "%02dh %02dm %02ds" $hours $minutes $seconds)
        echo "⌛ Done in ${timer_show}."        unset timer    fi}


preexec() {    timer=$(gdate +%s.%N)}
precmd() {    if [ -n "$timer" ]; then        now=$(gdate +%s.%N)        elapsed=$(echo "$now - $timer" | bc)
        # Convert elapsed time to hours, minutes, and seconds        hours=$(echo "$elapsed/3600" | bc)        minutes=$(echo "($elapsed%3600)/60" | bc)        seconds=$(echo "$elapsed%60" | bc)
        # Format the timer display        timer_show=$(printf "%02dh %02dm %02ds" $hours $minutes $seconds)
        echo "⌛ Done in ${timer_show}."        unset timer    fi}

Linux

bash

preexec() {    timer=$(date +%s.%N)}precmd() {    if [ -n "$timer" ]; then        now=$(date +%s.%N)        elapsed=$(echo "scale=3; $now - $timer" | bc)        # Convert elapsed time to hours, minutes, and seconds        hours=$(echo "scale=0; $elapsed/3600" | bc)        minutes=$(echo "scale=0; ($elapsed%3600)/60" | bc)        seconds=$(echo "scale=3; $elapsed%60" | bc)        # Format the timer display        timer_show=$(printf "%02dh %02dm %05.2fs" $hours $minutes $seconds)        echo "⌛ Done in ${timer_show}."        unset timer    fi}

preexec() {    timer=$(date +%s.%N)}precmd() {    if [ -n "$timer" ]; then        now=$(date +%s.%N)        elapsed=$(echo "scale=3; $now - $timer" | bc)        # Convert elapsed time to hours, minutes, and seconds        hours=$(echo "scale=0; $elapsed/3600" | bc)        minutes=$(echo "scale=0; ($elapsed%3600)/60" | bc)        seconds=$(echo "scale=3; $elapsed%60" | bc)        # Format the timer display        timer_show=$(printf "%02dh %02dm %05.2fs" $hours $minutes $seconds)        echo "⌛ Done in ${timer_show}."        unset timer    fi}