#
# $Id: crontab.txt,v 1.2 2013/12/10 14:09:18 jes91 Exp $
#
# Adjust to suit:
#	remove 'expr $(hostname) ... {' and the trailing ';}' if you want the
#		backup to be attempted always, i.e., even when not connected
#		to the Cambridge network;
#	use only ~/tardis/laptop_data_backup.sh within the braces {...} if you
#		don't mind receiving mail every day irrespective of whether
#		the backup failed or succeeded (assuming that cron will send
#		you mail if the job produces any output - see below).
#
# For Mac OS X later than 10.7 (Lion) note that:
#	cron throws away the output of cron jobs regardless of any MAILTO
#		variable defined;
#	although the mail command exists, local mail delivery is completely
#		broken by default and the mail will disappear without trace.
# Given these limitations (perhaps not insuperable but not worth the effort
# to fix since it will all be broken afresh with the next OS X release) it is
# best to just use ~/tardis/laptop_data_backup.sh within the braces {...} and
# then install Cyberduck SFTP client or similar to keep an eye on the
# completion, or otherwise, of your backups.
#
30 14 * * 1-5	expr $(hostname) : '.*\.cam\.ac\.uk$' >/dev/null && { ~/tardis/laptop_data_backup.sh > /tmp/tardis.$$ 2>&1 && mail -s 'Backup succeeded' $LOGNAME </dev/null || cat /tmp/tardis.$$ ; rm /tmp/tardis.$$ ;}