Simple process management in Linux
Simple process management in Linux
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Commands you will be familiar with this tutorial:
ps -- It is one of the important utilities for system administration under process monitoring
kill -- kill command in Linux is a built-in command which is used to terminate processes manually.
Let’s go to how "ps" command is used in day to day monitoring operations
1. List All Processes in Current Shell
ps
2. Display every active process on a Linux system
ps -Af or ps -ef
3. Display the processes owned by you
ps -x
4. Display every processes running with root user privileges
ps -U root -u root
5. Display processes owned by a certain group
ps -fG apache
ps -fG 48
6. Display processes by PID
ps -fp 1178
7. Display process by PPID
ps -f --ppid 1154
8. Print process Tree
ps -e --forest
ps -f --forest -C sshd
9. Show custom output format of a specific PID with pid,ppid,fgroup,ni,lstart,etime
ps -p 1154 -o pid,ppid,fgroup,ni,lstart,etime
10. Find a process name using its PID.
ps -p 1154 -o comm=
11. Find top running processes by highest memory and CPU usage
ps -eo pid,ppid,cmd,%mem,%cpu --sort=-%mem | head
ps -eo pid,ppid,cmd,%mem,%cpu --sort=-%cpu | head
12. To kill a Linux processes/unresponsive applications or any process that is consuming high CPU time.
First, find the PID of the unresponsive process or application.
ps -A | grep -i stress
kill -9 2583 2584
13. Perform Real-time Process Monitoring Using Watch Utility
watch -n 1 'ps -eo pid,ppid,cmd,%mem,%cpu --sort=-%mem | head'