Command line split timer that optionally uses a file as a pipe. You can have OBS read the contents of that file to display your timer in a video/stream if you don't want to just capture part of the terminal window. You can "split" by hitting Return/Enter (in the terminal) while the timer is running, and stop the timer with Ctrl-C (in the termina…

shplit.sh

#!/bin/bash

if [[ "${1}x" == "x" ]]; then
    USE_PIPE=false
else
    USE_PIPE=true
    PIPE=${1}
fi

FORMAT="%s.%2N"
STARTTIME=$(date +${FORMAT})

function show_info {
    if [[ $USE_PIPE == true ]]; then
        echo "Timer file: ${PIPE}"
    fi
    echo "End timing with ctrl-c."
}

# bc formats 0.nn as .nn which sucks
function format_duration {
    printf "%.2f" $1
}

function tick_time {
    DUR=$(format_duration $(bc <<< $(date +${FORMAT})-$STARTTIME))
    PRETTY_DUR=$(date +%T.%2N -u -d "@${DUR}")
    printf "\r%s " ${PRETTY_DUR}
    if [[ $USE_PIPE == true ]]; then
        echo ${PRETTY_DUR} > ${PIPE}
    fi
}

function finish_up {
    tick_time
    echo
}

trap finish_up exit

show_info

while true; do
    tick_time
    if [[ $USE_PIPE == true ]]; then
        sleep .1
    fi
done