How To Install flex-doc on Kali Linux

Introduction

In this tutorial we learn how to install flex-doc on Kali Linux.

What is flex-doc

flex-doc is:

Flex is a tool for generating scanners: programs which recognized lexical patterns in text. It reads the given input files for a description of a scanner to generate. The description is in the form of pairs of regular expressions and C code, called rules. Flex generates as output a C source file, lex.yy.c, which defines a routine yylex(). This file is compiled and linked with the -lfl library to produce an executable. When the executable is run, it analyzes its input for occurrences of the regular expressions. Whenever it finds one, it executes the corresponding C code.

This package contains the HTML documentation for flex.

There are three methods to install flex-doc on Kali Linux. 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-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-doc using apt-get by running the following command:

sudo apt-get -y install flex-doc

Install flex-doc Using apt

Update apt database with apt using the following command.

sudo apt update

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

sudo apt -y install flex-doc

Install flex-doc Using aptitude

If you want to follow this method, you might need to install aptitude on Kali Linux first since aptitude is usually not installed by default on Kali Linux. Update apt database with aptitude using the following command.

sudo aptitude update

After updating apt database, We can install flex-doc using aptitude by running the following command:

sudo aptitude -y install flex-doc

How To Uninstall flex-doc on Kali Linux

To uninstall only the flex-doc package we can use the following command:

sudo apt-get remove flex-doc

Uninstall flex-doc And Its Dependencies

To uninstall flex-doc and its dependencies that are no longer needed by Kali Linux, we can use the command below:

sudo apt-get -y autoremove flex-doc

Remove flex-doc Configurations and Data

To remove flex-doc configuration and data from Kali Linux we can use the following command:

sudo apt-get -y purge flex-doc

Remove flex-doc configuration, data, and all of its dependencies

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

sudo apt-get -y autoremove --purge flex-doc

Dependencies

flex-doc have the following dependencies:

References

• flex-doc website

Summary

In this tutorial we learn how to install flex-doc package on Kali Linux using different package management tools: apt, apt-get and aptitude.