Question: Displaying Linux Processes (Optional) Time Required: 10 minutes Objective: View processes running in Linux. Required Tools and Equipment: A computer with Linux installed or a Linux Live disk (Fedora Live Desktop in this project but others can be used) Description: In this project, you use Linux System Monitor and the ps command to view processes and performance information.
1. Start Linux, and access the desktop. Click Activities, and then click the Show Applications icon.
2. Start System Monitor by clicking Utilities and then System Monitor. Click the Processes tab, if necessary, and then click the % CPU column to sort from highest to lowest CPU %. Linux doesn't show a system idle process. System Monitor itself is probably the biggest user of the CPU now.
3. Click the Settings icon, and then click Active Processes to see only currently active processes. System Monitor is probably the only process shown. Click the Settings icon, and then click My Processes to show all processes started by the currently logged-on user.
4. Click the Resources tab, which shows information similar to the Performance tab in Task Manager.
5. Start Firefox by clicking Activities and then the Firefox icon (orange and blue globe). You should see the CPU utilization and network utilization spike higher. Close Firefox and System Monitor.
6. Click Activities, Show Applications, Utilities, and Terminal. To see all currently running processes, type ps -A and press Enter. Type ps -A | less and press Enter to paginate the output. You can use the up and down arrows and Page Up and Page Down keys to scroll through the output. Type q to quit.
7. Type top and press Enter to see a real-time view of the top CPU users and other statistics. Type q to quit.
8. To shut down Linux, type sudo shutdown -h now and press Enter.