40 a simple description of the process of writing shell script under Ubuntu

A simple description of the process of writing a shell script in Linux
1, use VIM or gedit to create a file, usually use. sh as a file suffix
2, "#!/bin/bash" as the first line of statements, which "#!" Known as the "Sha-bang" symbol, is the starting symbol for the shell script to indicate that the current script file is executed with Bin/bash
3, write the statement, use # as the key character of the annotation
4, use the chmod +x command to modify the permissions of the script file, so that it can execute
5, you can use the./file name to execute the script at this time