.bat Batch File, used by Windows operating systems and runs in Command Prompt
.ps1 PowerShell script, available by default on modern Windows Operating Systems
.vbs Virtual Basic script written in the VBScript language, used on Windows Operating Systems. Is less common than Batch and Powershell scripts but can still be found
.sh Bash Script, used on Linux and Unix Operating Systems and run in a Shell. Most common Linux shell is BASH (Bourne Again Shell)
.js JavaScript file, used to run the JavaScript programming language. Most often used in browsers to automate web pages, but can be used directly on an OS using tools like NodeJS
.py Python script or file, used to run code written in the Python programming language. Python works on many Operating Systems and can be used for scripts or building full applications