How To Install alex on CentOS 7
Introduction
In this tutorial we learn how to install alex on CentOS 7.
What is alex
Alex is a tool for generating lexical analysers in Haskell. It takes a description of tokens based on regular expressions and generates a Haskell module containing code for scanning text efficiently. It is similar to the tool lex or flex for C/C++.
We can use yum or dnf to install alex on CentOS 7. In this tutorial we discuss both methods but you only need to choose one of method to install alex.
Install alex on CentOS 7 Using yum
Update yum database with yum using the following command.
sudo yum makecache
After updating yum database, We can install alex using yum by running the following command:
sudo yum -y install alex
Install alex on CentOS 7 Using dnf
If you don’t have dnf installed you can install DNF on CentOS 7 first.
Update yum database with dnf using the following command.
sudo dnf makecache
After updating yum database, We can install alex using dnf by running the following command:
sudo dnf -y install alex
How To Uninstall alex on CentOS 7
To uninstall only the alex package we can use the following command:
sudo dnf remove alex
References
Summary
In this tutorial we learn how to install alex on CentOS 7 using yum and dnf.
