Red Hat Bugzilla – Bug 908534
Shebang line '#!/usr/bin/env ruby --verbose' complains on 'ruby --verbose'
Last modified: 2013-02-08 04:40:33 EST
Created attachment 694191 [details]
Script showing the problem
Description of problem:
Shebang line '#!/usr/bin/env ruby --verbose' complains it doesn't find 'ruby --verbose'
Version-Release number of selected component (if applicable):
Steps to Reproduce:
1. Run a simple script with the give shebang
/usr/bin/env: ruby --verbose: No such file or directory
Run the script
I guess bash is probably playing some game here - try to run e.g. /usr/bin/env ls -l -> it works - and if you use it as a shebang, it doesn't... adding Bash maintainer to CC.
The executor is kernel. From my quick search the correct "shebang" line is:
and argument is only 1 argument and couldn't contain white space. I didn't find any specification.
What bash do:
1) tries to call execve() function to execute the command - our kernel interprets the shebang line
2) It's possible the kernel doesn't support shebang line interpretation and bash can do it itself. However also bash interprets only 1 argument.
In other words, there is no option to provide more than one argument for interpreter in shebang.
Ok, thanks for explanation Roman - closing NOTABUG - as this is not a bug in coreutils and it seems to be correct behaviour. Maybe it could be filed as RFE for kernel to improve the shebang handling of multiargs.