Fall asleep while watching videos? Want your browser tab to close after X seconds? For OS X with Chrome/Safari. Example uses: "closebrowser chrome 3600" "closebrowser safari 3000"

closebrowser

#!/usr/bin/env bash
if [[ $1 == "chrome" ]]
then
  echo "Closing active tab of Google Chrome in $2 seconds."
  sleep $2
  osascript -e 'tell app "Google Chrome" to close active tab of front window'
elif [[ $1 == "safari" ]]
then
  echo "Closing active tab of Safari in $2 seconds."
  sleep $2
  osascript -e 'tell app "Safari" to close current tab of first window'
fi
echo "Done."