crontab -e load a file into
 

before i leave for work I often make a copy of my crontab file

crontab -l > /home/casper/backup`date +%Y%m%d

when the crontab gets corrupted or someone changes it - i reload the backup - usually by opening up the crontab with crontab -e, then opening up the backupYYYYmmdd file in a text editor and cutting and pasting the backup contents into crontab -e

just wondering - is there a quicker way. I tired

crontab -e < /home/casper/backup20100723

but it does not work.

man crontab