How To Install unifdef on Ubuntu 18.04

In this tutorial we learn how to install unifdef on Ubuntu 18.04. unifdef is Remove cpp #ifdef lines from files

Introduction

In this tutorial we learn how to install unifdef on Ubuntu 18.04.

What is unifdef

unifdef is:

The unifdef utility selectively processes conditional cpp(1) directives. It removes from a file both the directives and any additional text that they specify should be removed, while otherwise leaving the file alone.

There are three methods to install unifdef 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 unifdef Using apt-get

Update apt database with apt-get using the following command.

sudo apt-get update

After updating apt database, We can install unifdef using apt-get by running the following command:

sudo apt-get -y install unifdef

Install unifdef Using apt

Update apt database with apt using the following command.

sudo apt update

After updating apt database, We can install unifdef using apt by running the following command:

sudo apt -y install unifdef

Install unifdef 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 unifdef using aptitude by running the following command:

sudo aptitude -y install unifdef

How To Uninstall unifdef on Ubuntu 18.04

To uninstall only the unifdef package we can use the following command:

sudo apt-get remove unifdef

Uninstall unifdef And Its Dependencies

To uninstall unifdef and its dependencies that are no longer needed by Ubuntu 18.04, we can use the command below:

sudo apt-get -y autoremove unifdef

Remove unifdef Configurations and Data

To remove unifdef configuration and data from Ubuntu 18.04 we can use the following command:

sudo apt-get -y purge unifdef

Remove unifdef configuration, data, and all of its dependencies

We can use the following command to remove unifdef configurations, data and all of its dependencies, we can use the following command:

sudo apt-get -y autoremove --purge unifdef

References

Summary

In this tutorial we learn how to install unifdef package on Ubuntu 18.04 using different package management tools: apt, apt-get and aptitude.