Many crontab tricks abound, also. The time fields have many
methods of specifying
time periods. Examples:
#touch a file every 5 minutes, the hard way
0,5,10,15,20,25,30,35,40,45,50,55 * * * * touch ~/file
#touch a file every 5 mins, the easy way
0-59/5 * * * * touch ~/file
#every weekday, touch file, the hard way
0 6 * * mon touch ~/file
0 6 * * tue touch ~/file
etc.
#every weekday, touch file, the easy way
0 6 * * mon-fri touch ~/file
#one last example, every hour between 6-10 on the hour and 4
0 6-10,4 * * * touch ~/file
So there you go. These help one save a lot of
time when setting up
crontabs and also allow you to look
super elite around all of your
unix hacker friends.