Cron is a daemon process for the task scheduler that runs on Unix-like servers.
Since the cron settings (task schedule) can be set for each user, it takes a lot of time to issue the bash command to check all the settings in the server.
# 1.Move to administrator privileges su - # 2.Output cron settings for each user for user in $(cut -f1 -d: /etc/passwd); do echo $user; crontab -u $user -l; done # 3.Get out of administrator privileges exit
Each part of the command 2 has the following processing contents.
``` cut -f1 -d
The content is divided by the delimiter “:” on each line of the password file “/ etc / passwd”, and the value of the first item (user name) is extracted.
Execute and expand the command.
for ××× in △△△; do □□□; done
Each item of △△△ is stored in XXX and the processing of □□□ is executed.
Output the contents of XXX. (The user name is output in this command)
crontab -u $××× -l
Output cron settings for xxx users.
- Display a list of cron jobs for all users –Qiita
- unix - How do I list all cron jobs for all users? - Stack Overflow
This article is a migration article from the blog “Technical Notes for Chores Engineers”. The previous blog will be deleted.