pidof command HowTo - Linux / Unix Q & A from nixCraft

Bash check if process is running or not on Linux / Unix

last updated November 17, 2018 in BASH Shell, CentOS, Debian / Ubuntu, FreeBSD, Linux, UNIX

I am new to Linux shell scripting. I am using a CentOS 7 Linux and Ubuntu 18.04 LTS server in the cloud. How do I check if a process is running or not on Linux? How do I determine whether a process is running or not in a shell script running on an Ubuntu server?

Linux find process by name

last updated January 8, 2018 in CentOS, Debian / Ubuntu, Linux, RedHat and Friends, Suse

I am a new Linux user. How can I find a computer program/process by name on Linux? Is it possible to find a process by name instead of PID on a Linux?
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Linux how long a process has been running?

last updated August 1, 2016 in BASH Shell, CentOS, Debian / Ubuntu, Linux, RedHat and Friends, Suse

I‘m a new Linux system user. How do I check how long a process or pid has been running on my Ubuntu Linux server?

Linux Find Out What Process Are Using Swap Space

last updated November 28, 2018 in BASH Shell, Debian / Ubuntu, Linux, RedHat and Friends

The top and free command display the total amount of free and used physical and swap memory in the server. How do I determine which process is using swap space under Linux operating systems? How do I find out swap space usage of particular process such as memcached?

Linux: Find All File Descriptors Used By a Process

last updated July 1, 2011 in Linux

How can I find all the file descriptors used by a process such as httpd (Apache web server) or mysqld (MySQL Database server)?

Linux / UNIX: Find out or determine if process pid is running

last updated June 27, 2015 in CentOS, Debian / Ubuntu, FreeBSD, HP-UX Unix, Linux, RedHat and Friends, Solaris-Unix, UNIX

How do I find out my process is running on a Unix-like operating systems? How do I get the pid number for particular process on a Linux operating systems using bash shell?

Kill Process in Linux or Terminate a Process in UNIX / Linux Systems

last updated December 27, 2018 in Commands, Linux, UNIX

I am a new Linux system user. How do I kill a process on Linux based server using command line options? How can I kill running process on Unix?