How To Install flex-old-doc on Debian 9
Introduction
In this tutorial we learn how to install flex-old-doc on Debian 9.
What is flex-old-doc
flex-old-doc is:
This package contains the HTML documentation for the old 2.5.4a version of flex, which is no longer being developed upstream. You should normally chose flex-doc, unless you have legacy lexer files that do not work with a modern flex, and need to use the old flex. The upstream source code can be found at the FTP site: http://flex.sourceforge.net/
There are three methods to install flex-old-doc on Debian 9. We can use apt-get, apt and aptitude. In the following sections we will describe each method. You can choose one of them.
Install flex-old-doc Using apt-get
Update apt database with apt-get using the following command.
sudo apt-get update
After updating apt database, We can install flex-old-doc using apt-get by running the following command:
sudo apt-get -y install flex-old-doc
Install flex-old-doc Using apt
Update apt database with apt using the following command.
sudo apt update
After updating apt database, We can install flex-old-doc using apt by running the following command:
sudo apt -y install flex-old-doc
Install flex-old-doc 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 Debian. Update apt database with aptitude using the following command.
sudo aptitude update
After updating apt database, We can install flex-old-doc using aptitude by running the following command:
sudo aptitude -y install flex-old-doc
How To Uninstall flex-old-doc on Debian 9
To uninstall only the flex-old-doc package we can use the following command:
sudo apt-get remove flex-old-doc
Uninstall flex-old-doc And Its Dependencies
To uninstall flex-old-doc and its dependencies that are no longer needed by Debian 9, we can use the command below:
sudo apt-get -y autoremove flex-old-doc
Remove flex-old-doc Configurations and Data
To remove flex-old-doc configuration and data from Debian 9 we can use the following command:
sudo apt-get -y purge flex-old-doc
Remove flex-old-doc configuration, data, and all of its dependencies
We can use the following command to remove flex-old-doc configurations, data and all of its dependencies, we can use the following command:
sudo apt-get -y autoremove --purge flex-old-doc
Dependencies
flex-old-doc have the following dependencies:
References
Summary
In this tutorial we learn how to install flex-old-doc package on Debian 9 using different package management tools: apt, apt-get and aptitude.