How To Schedule Cron Job For Users In Linux

A Red Hat Certified System Administrator (RHCSA) is able to perform the following tasks:

• Understand and use essential tools for handling files, directories, command-line environments, and documentation
  
• Operate running systems, including booting into different run levels, identifying processes, starting and stopping virtual machines, and controlling services
  
• Configure local storage using partitions and logical volumes
  
• Create and configure file systems and file system attributes, such as permissions, encryption, access control lists, and network file systems
  
• Deploy, configure, and maintain systems, including software installation, update, and core services
  
• Manage users and groups, including use of a centralized directory for authentication
  
• Manage security, including basic firewall and SELinux configuration.

Schedule cron job for user sowmya that every day "GoodMorning" message should be displayed at 19.27.

CMD:

root@linuxstorage:~#crontab -u sowmya -e

27             19         *              *              *              /bin/echo "hello"

:wq!

u    - Users
e    - Edit the file

32 -  Minutes
16 -  Hours ( 4 pm )
*   -  Every day
*   -  Every month
*   -  Every week                                    


wq! - save file

Cron will run every day at 7.27 pm.

root@linuxstorage:~#crontab -u sowmya -l

l = Print scheduled cron. 

root@linuxstorage:~#service crond restart

Enter the crond service in chkconfig

root@linuxstorage:~#chkconfig crond on

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