When I run crontab -l on a new user that does not have any crons yet, the result is like this and the command fails and exits
no crontab for [user]
If I run crontab -e on a new user the result is as follows and the crontab editor opens.
no crontab for [user] - using an empty one
Where is it pulling the following verbage from?
# Edit this file to introduce tasks to be run by cron. # # Each task to run has to be defined through a single line # indicating with different fields when the task will be run # and what command to run for the task # # To define the time you can provide concrete values for # minute (m), hour (h), day of month (dom), month (mon), # and day of week (dow) or use '*' in these fields (for 'any').# # Notice that tasks will be started based on the cron's system # daemon's notion of time and timezones. # # Output of the crontab jobs (including errors) is sent through # email to the user the crontab file belongs to (unless redirected). # # For example, you can run a backup of all your user accounts # at 5 a.m every week with: # 0 5 * * 1 tar -zcf /var/backups/home.tgz /home/ # # For more information see the manual pages of crontab(5) and cron(8) # # m h dom mon dow command
Specifically what file holds these instructions.
I would like to run the commands like this:
[instructions file] > temp_file [a cron job] >> temp_file crontab temp_file rm temp_file
However running this fails due to there being no cron file for the new user:
crontab -l > temp_file [a cron job] >> temp_file crontab temp_file rm temp_file