How To Install ps-watcher on Ubuntu 20.04
Introduction
In this tutorial we learn how to install ps-watcher
on Ubuntu 20.04.
What is ps-watcher
ps-watcher is:
This program runs the ps command periodically and triggers commands on matches. The match patterns are Perl regular expressions which can refer to the process information via variables.
For example it can be used to ensure that a daemon is running, or is not running too many times. It can also be used to determine when a process has consumed too many resources, perhaps due to a memory leak.
There are three methods to install ps-watcher
on Ubuntu 20.04. We can use apt-get
, apt
and aptitude
. In the following sections we will describe each method. You can choose one of them.
Install ps-watcher Using apt-get
Update apt database with apt-get
using the following command.
sudo apt-get update
After updating apt database, We can install ps-watcher
using apt-get
by running the following command:
sudo apt-get -y install ps-watcher
Install ps-watcher Using apt
Update apt database with apt
using the following command.
sudo apt update
After updating apt database, We can install ps-watcher
using apt
by running the following command:
sudo apt -y install ps-watcher
Install ps-watcher Using aptitude
If you want to follow this method, you might need to install aptitude first since aptitude is usually not installed by default on Ubuntu. Update apt database with aptitude
using the following command.
sudo aptitude update
After updating apt database, We can install ps-watcher
using aptitude
by running the following command:
sudo aptitude -y install ps-watcher
How To Uninstall ps-watcher on Ubuntu 20.04
To uninstall only the ps-watcher
package we can use the following command:
sudo apt-get remove ps-watcher
Uninstall ps-watcher And Its Dependencies
To uninstall ps-watcher
and its dependencies that are no longer needed by Ubuntu 20.04, we can use the command below:
sudo apt-get -y autoremove ps-watcher
Remove ps-watcher Configurations and Data
To remove ps-watcher
configuration and data from Ubuntu 20.04 we can use the following command:
sudo apt-get -y purge ps-watcher
Remove ps-watcher configuration, data, and all of its dependencies
We can use the following command to remove ps-watcher
configurations, data and all of its dependencies, we can use the following command:
sudo apt-get -y autoremove --purge ps-watcher
References
Summary
In this tutorial we learn how to install ps-watcher
package on Ubuntu 20.04 using different package management tools: apt
, apt-get
and aptitude
.