Run script with sh or bash

Question

I have a .sh file. It includes bash syntax.

#!/bin/bash
function foo() {
    // do something
}

doo()
// do something

sh doesn't link to bash on my system.

Below command doesn't work:

sh sample.sh

It throws syntax error. Below command works fine.

bash sample.sh

I think '#!/bin/bash' is useless for my case. I know that sh != bash. But do I must specify sh/bash/etc like upper example to run .sh file?

`sh yourscript` ignores the shebang line and forces `sh`. Don't use it; just run `./yourscript`. — Charles Duffy, Jun 07 '19 at 19:22
"Must I use a shebang or use the correct shell on the command lime?" Yes, one or the other - no way around it. — Dennis Williamson, Jun 07 '19 at 21:14

score 0 · Answer 1 · answered Jun 07 '19 at 19:21

0

The shebang (#!) is only used if you execute the file (i.e: ./sample.sh). Of course, the file must have execution permissions.

If you execute sh with your file as argument its content is interpreted by sh (not taking into account the shebang). The same for bash or any other command that reads the file represented by the first argument.

answered Jun 07 '19 at 19:21

Gonzalo Matheu

8,984
5
35
58

In [How to Answer](https://stackoverflow.com/help/how-to-answer), note the section "Answer Well-Asked Questions", and therein the bullet point regarding questions which "have been asked and answered many times before". – Charles Duffy Jun 07 '19 at 19:23

Run script with sh or bash

1 Answers1