Linux crontab | Cronjobs | at | Scheduling Jobs | RHCSA Certification #25 | Tech Arkit | EX200

Crontab and at Commands - Automating Regular Tasks
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at 8:20pm
at now +1min
at 10:00 AM Sun
at 10:00 AM July 25
at 10:00 AM 6/22/2018
at 10:00 AM 6.22.2018
at 10:00 AM next month
at 10:00 AM tomorrow
at now + 1 hour
at teatime tomorrow
at noon +4 days
at 5pm august 3 2016
at midnight
echo "sh backup.sh" | at 9:00 AM
at -f /path_to_script time
atq --To list all at scheduled jobs
atrm --To delete scheduled 'at' job followed by job ID
check the content of schedule jobs
at -c Job ID
Example of job definition:
.---------------- minute 0 - 59
| .------------- hour 0 - 23
| | .---------- day of month 1 - 31
| | | .------- month 1 - 12 OR jan,feb,mar,apr ...
| | | | .---- day of week 0 - 6 Sunday=0 or 7
| | | | |
* * * * user-name command to be executed