How would I set a script to execute on every Tuesday and Thursday at 11:50am?
I've been looking at the
at command, but I can't conceive how to use it the way I need to from its
at is excellent tool for one-off commands. To run a program repetitively at the same times, however, the right tool is
crontab -e. It will open an editor. Add this line and save the file:
50 11 * * 2,4 /path/to/script
This will run
/path/to/script every Tuesday and Thursday at 11:50am.
crontab runs programs in a limited environment. So,
script may need to set its own
If the machine has a properly set up mail server, any output from
script will be e-mailed to the user who owns the
crontab file. Alternatively, output will be mailed to the address specified by the MAILTO variable in the crontab file. See
man 5 crontab for details.
The first five columns of the line above define the time that the program is run. Their meaning is documented in
man 5 crontab to be:
field allowed values ----- -------------- minute 0-59 hour 0-23 day of month 1-31 month 1-12 (or names, see below) day of week 0-7 (0 or 7 is Sun, or use names)