DevOps use languages for Software development and deployment Automation.
MicroSoft PowerShell – If your application software included Microsoft windows, then DevOps knowledge need to be of PowerShell. PowerShell uses different techniques to give administrative automation control over environment.
Puppet – To learn an application deployment automation framework that is available across a wide variety of platforms and used by all companies, it will be hard to beat the appeal of Puppet. It is an open source configuration management tool that uses its own declarative scripting language to build automation and management scripts.
Bash – It is the most important and frequently used Unix Shell. It provides the command shell and scripting language used to automate processes on tens of thousands of Linux servers around the world.
PHP - PHP is a scripting language. It has become a normal programming language in organizations. PHP is used for all stages of application development.
Perl - Perl is an interpreted language often used for scripts that hold together bits and pieces of larger applications. Those scripts are sometimes involved in application automation, but are more commonly used as tools to build the apps themselves.
Ruby- Ruby is an object-oriented, compiled, full-featured programming language with a syntax that should be familiar to anyone who knows Python or Perl.
Java – It is one of the top languages taught in university computer science programs. It's versatile and powerful, as long as you don't have to reach down to bare metal for your application.
C - C is a procedural language. C started life as a tool for automating processes inside long-distance switches. C is the next best thing to assembler if you need to cut through all the APIs and SDKs and directly manipulate the hardware itself.
Tcl - Tcl is a scripting language that can take you from application deployment automation to industrial Internet of Things (IoT) embedded control. It is widely used, open source, and applicable to a variety of situations.
SQL - SQL(structured query language) those who are working on database queries and operations need to know SQL. So, really, does anyone who is working on applications designed to reach back into a database for processing fodder. The ability to drop a line of SQL into an application can save you time.