Do I always need to make a file executable to run it?

Asked Apr 16 '19 at 08:40

Active Apr 16 '19 at 08:40

Viewed 235 times

I mean if I just use bash to run the file like bash ./myscript.sh will it be enough or there are some pitfalls?

asked Apr 16 '19 at 08:40

through.a.haze

If you call it like that, you don't need to make it executable. – Stefan Hamcke Apr 16 '19 at 08:42
@StefanHamcke so there is no difference between making it executable and run by ./myscript.sh or run it explicitly by calling bash ./myscript.sh, right? – through.a.haze Apr 16 '19 at 08:45
This depends on the shebang. – pLumo Apr 16 '19 at 08:49
@RoVo the shebang is #!/bin/bash – through.a.haze Apr 16 '19 at 08:51
And what does type bash say. If it's the same, there will be no difference. Or if you run /bin/bash myscript.sh. – pLumo Apr 16 '19 at 08:52
If that's your shebang, then your current shell will always start a subshell bash which executes the commands in your script, provided the command bash in your shell starts /bin/bash. – Stefan Hamcke Apr 16 '19 at 08:52
@RoVo it says the same. Thanks RoVo and Stefan Hamcke! – through.a.haze Apr 16 '19 at 09:00
or maybe better What is the difference between ./ and sh to run a script?. – pLumo Apr 16 '19 at 09:10

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