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Scheduling Processes in SUSE Linux Enterprise

In this hands-on lab, we will be looking at scheduling processes to run on a schedule. We will perform some troubleshooting on a user account to ensure the process is working correctly, and then we will create a task as the `root` user to ensure our time is synced correctly on our server.

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Lab Info
Level
Beginner
Last updated
Sep 24, 2025
Duration
30m

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Table of Contents
  1. Challenge

    Verify the `testuser` Can Create Scheduled Tasks
    1. Access the testuser's account:

      su - testuser 
      

      The password is Password!

    2. Create a file named test.sh that echoes the string "this is a test" into an examplefile:

      vim test.sh
      
      ++contents
      #! /bin/bash
      echo 'this is a test' >> /home/testuser/examplefile
      

      Save and exit the file with Escape and then Shift+ZZ.

    3. Make the file executable:

      chmod +x test.sh
      
    4. Open testuser's crontab and add a task:

      crontab -e
      
    5. Add this line:

      * * * * * /home/testuser/test.sh
      

      Save and exit with Escape and then Shift+ZZ.

    6. Tail the file examplefile and ensure a line is appended every minute:

      tail -F examplefile
      
    7. Hit Ctrl+C to quit.

    8. Remove the task from the crontab:

      crontab -e
      
    9. On the line with the task, press d twice.

    10. Save and exit with Escape and then Shift+ZZ.

  2. Challenge

    Create a Task as `root` that Syncs the System Clock to the Hardware Clock
    1. Open the root crontab:

      sudo -i crontab -e
      
    2. Add the task to run the backup at 3 AM:

      SHELL=/bin/bash
      PATH=/sbin
      00 03 * * * /usr/local/bin/customback /opt/programdata
      

      Save and exit with Escape+X.

    3. Verify the task exists in the root crontab:

      sudo -i crontab -l
      
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