There is a number way of killing processes on a Linux based OS, killall is one of these methods. It’s always good to be ready to kill an unwanted process or a rogue process which is eating resources.
Usage
Kill all instances of the “httpd” process
| 1 | killall httpd | 
Kill all proccesses running under the user “postfix”
| 1 | killall –u postfix | 
Kill a specific process but its full path
| 1 | killall /usr/libexec/postfix/master | 
Command not found?
It does not always come pre-installed, it’s simple to install.
Ubuntu / Debian
| 1 | apt–get install psmisc | 
RHEL – Red hat / Fedora / CentOS
| 1 | yum install psmisc | 
This package also contains the following useful programs:
- fuser– identifies what processes are using files.
- killall– kills a process by its name, similar to a- pkillUnices.
- pstree– Shows currently running processes in a tree format.
- peekfd– Peek at file descriptors of running processes.
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