1. #!/bin/bash
    2. #************************************************
    3. #       Author:        Ronnie Ming
    4. #       Filename:      func.sh
    5. #       Date:          2021-05-02 01:44:55
    6. #       Description:   ...
    7. #************************************************
    9. function func1() {
    10.     ...
    11.   return
    12. }
    14. func2() {
    15.     ...
    16.   return 1
    17. }
    19. ...
    21. exit
    • #! : shebang is used to tell the kernel the name of the interpreter that should be used to execute the script that follows.
    • exit [EXIT_STATUS]
      • Terminate the script with exit status of EXIT_STATUS
      • When no argument is passed, the exit status defaults to the exit status of the last command executed.
    • When a script “runs off the end” (reaches end of file), it terminates with an exit status of the last command executed.