CronJobs

Command Format

# 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) OR sun,mon,tue,wed,thu,fri,sat
# |  |  |  |  |
# *  *  *  *  * user-name  command to be executed

Multiple CronJobs for the Same User

Steps to Set Multiple Cron Jobs for the Same User

1. Edit the User's Crontab File:

crontab -e

2. Add Multiple Cron Jobs: Simply add each job on a new line. For example:

# Run script1.sh every hour
0 * * * * /path/to/script1.sh

# Run script2.sh every day at 2:30 AM
30 2 * * * /path/to/script2.sh

# Run script3.sh every Monday at 8:00 AM
0 8 * * 1 /path/to/script3.sh

Get All CronJobs from Each Users

getent passwd | cut -d: -f1 | while read user; do echo "Cron jobs for user: $user"; sudo crontab -l -u "$user" 2>/dev/null; done