cygwin update reminder

cygwin_update_reminder.md

Update reminder for Cygwin

$ cat check_weekly_update.sh
#!/bin/bash

## check if the last cygwin update is less than a week back by
## checking if the newest file in /etc/setup is younger than a week

if [ $(( $(stat -c %Z /etc/setup/$(ls -tr /etc/setup | cat | tail -n 1)) + (7*24*60*60) )) -lt $(date +%s) ]; then
    echo $0: last update seems to be more than a week past. please update cygwin.
fi

and ~/.bashrc

## running interactively
## be silent if not interactive
if [[ $- == *i* ]]; then
    ~/check_weekly_update.sh
fi