How To Install ruby-posix-spawn on Ubuntu 18.04
Introduction
In this tutorial we learn how to install ruby-posix-spawn on Ubuntu 18.04.
What is ruby-posix-spawn
ruby-posix-spawn is:
The posix-spawn library aims to implement a subset of the Ruby 1.9
Process::spawninterface in a way that takes advantage of fast process spawning interfaces when available and provides sane fallbacks on systems that do not.
fork(2) calls slow down as the parent process uses more memory due to
the need to copy page tables. In many common uses of fork(), where it
is followed by one of the exec family of functions to spawn child
processes (Kernel#system,IO::popen, Process::spawn, etc.), it’s
possible to remove this overhead by using the use of special process
spawning interfaces (posix_spawn(), vfork(), etc.)
There are three methods to install ruby-posix-spawn 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-posix-spawn 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-posix-spawn using apt-get by running the following command:
sudo apt-get -y install ruby-posix-spawn
Install ruby-posix-spawn Using apt
Update apt database with apt using the following command.
sudo apt update
After updating apt database, We can install ruby-posix-spawn using apt by running the following command:
sudo apt -y install ruby-posix-spawn
Install ruby-posix-spawn 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-posix-spawn using aptitude by running the following command:
sudo aptitude -y install ruby-posix-spawn
How To Uninstall ruby-posix-spawn on Ubuntu 18.04
To uninstall only the ruby-posix-spawn package we can use the following command:
sudo apt-get remove ruby-posix-spawn
Uninstall ruby-posix-spawn And Its Dependencies
To uninstall ruby-posix-spawn and its dependencies that are no longer needed by Ubuntu 18.04, we can use the command below:
sudo apt-get -y autoremove ruby-posix-spawn
Remove ruby-posix-spawn Configurations and Data
To remove ruby-posix-spawn configuration and data from Ubuntu 18.04 we can use the following command:
sudo apt-get -y purge ruby-posix-spawn
Remove ruby-posix-spawn configuration, data, and all of its dependencies
We can use the following command to remove ruby-posix-spawn configurations, data and all of its dependencies, we can use the following command:
sudo apt-get -y autoremove --purge ruby-posix-spawn
References
Summary
In this tutorial we learn how to install ruby-posix-spawn package on Ubuntu 18.04 using different package management tools: apt, apt-get and aptitude.
