Linux App Usage Tracker

app-track.sh

#!/bin/sh

DATABASE=${HOME}/.app-track.db
touch "${DATABASE}" && chmod 0600 "${DATABASE}"

active_window_id() {
    xprop -root _NET_ACTIVE_WINDOW | rev | cut -d' ' -f1 | rev
}

window_pid_by_id() {
    xprop -id ${1} _NET_WM_PID | rev | cut -d' ' -f1 | rev
}

process_name_by_pid() {
    basename $(ps -q "${1}" -o command=)
}

active_window_process() {
    id="$(active_window_id)"
    if [ "${id}" = "0x0" ]; then
        echo "Desktop"
    else
        process_name_by_pid "$(window_pid_by_id "${id}")"
    fi
}

timestamp() {
    date '+%s'
}

latest_entry() {
    tail -1 "${DATABASE}"
}

latest_process() {
    echo "$(latest_entry)" | cut -d',' -f2
}

add_entry() {
    echo "$(timestamp),${*}" >> "${DATABASE}"
}

while [ 1 ]; do
    t=$(timestamp)
    p="$(active_window_process)"
    [ "${p}" = "$(latest_process)" ] || add_entry "${p}"
    sleep 1
done