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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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Path Info

Level

Beginner

Duration

30m

Published

Dec 20, 2019

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.
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
```

Author

A Cloud Guru

The Cloud Content team comprises subject matter experts hyper focused on services offered by the leading cloud vendors (AWS, GCP, and Azure), as well as cloud-related technologies such as Linux and DevOps. The team is thrilled to share their knowledge to help you build modern tech solutions from the ground up, secure and optimize your environments, and so much more!

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