Watch Yoself

pics.sh

#! /bin/bash

# usage - ./pics.sh dir sleep-len

command -v brew >/dev/null 2>&1 || { exit 1; }
command -v imagesnap >/dev/null 2>&1 || { brew install imagesnap; }

while :; do
    imagesnap $1/$(date +%y%m%d%H%M%S).png
    sleep $2
done