How can I create sh extension file in Linux ubuntu?

Question

I want to write a script to run .jar files as daemons. I used ‘vi’ to create a file but I don’t know how to define the file specifically to be a .sh file. For example, let’s say the file is ‘foo’ or ‘foo.txt. I want to convert it to ‘foo.sh’. 

Can anyone tell me how to create a .sh extension file in Linux?

Answer 1

Below is the code template: 

#!/bin/bash

# content of your script

This is called a shebang line which tells the OS what program it should execute. Here, it’s bash. 

Code to make the file executable:

chmod 755 foo.sh

Code to execute the script : 

./foo.sh

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