Crontab usage format description
Crontab usage format description
Time-sharing, day, month and week order
The first column represents minutes 1: 59 per minute or / 1
The second column represents the hour 023 (0 means 0)
The third column represents the date 1: 31
The fourth column represents the month from January to December.
Column 6 commands that need to be run
[root@localhost ~] # crontab-l # View the set task
[root@localhost ~] # crontab-e # set scheduled tasks
