How To Install ruby-directory-watcher on Ubuntu 18.04
Introduction
In this tutorial we learn how to install ruby-directory-watcher on Ubuntu 18.04.
What is ruby-directory-watcher
ruby-directory-watcher is:
The directory watcher operates by scanning a directory at some interval and generating a list of files based on a user supplied glob pattern. As the file list changes from one interval to the next, events are generated and dispatched to registered observers.
Three types of events are supported: added, modified, and removed.
There are three methods to install ruby-directory-watcher on Ubuntu 18.04. We can use apt-get, apt and aptitude. In the following sections we will describe each method. You can choose one of them.
Install ruby-directory-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 ruby-directory-watcher using apt-get by running the following command:
sudo apt-get -y install ruby-directory-watcher
Install ruby-directory-watcher Using apt
Update apt database with apt using the following command.
sudo apt update
After updating apt database, We can install ruby-directory-watcher using apt by running the following command:
sudo apt -y install ruby-directory-watcher
Install ruby-directory-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 ruby-directory-watcher using aptitude by running the following command:
sudo aptitude -y install ruby-directory-watcher
How To Uninstall ruby-directory-watcher on Ubuntu 18.04
To uninstall only the ruby-directory-watcher package we can use the following command:
sudo apt-get remove ruby-directory-watcher
Uninstall ruby-directory-watcher And Its Dependencies
To uninstall ruby-directory-watcher and its dependencies that are no longer needed by Ubuntu 18.04, we can use the command below:
sudo apt-get -y autoremove ruby-directory-watcher
Remove ruby-directory-watcher Configurations and Data
To remove ruby-directory-watcher configuration and data from Ubuntu 18.04 we can use the following command:
sudo apt-get -y purge ruby-directory-watcher
Remove ruby-directory-watcher configuration, data, and all of its dependencies
We can use the following command to remove ruby-directory-watcher configurations, data and all of its dependencies, we can use the following command:
sudo apt-get -y autoremove --purge ruby-directory-watcher
References
Summary
In this tutorial we learn how to install ruby-directory-watcher package on Ubuntu 18.04 using different package management tools: apt, apt-get and aptitude.
