Message386206
> Ideally, the error would say:
> FileNotFoundError: ./demo: /usr/bin/hugo: bad interpreter: No such file or directory
The kernel simply returns ENOENT on an attempt to execve() a file with non-existing hash-bang interpreter. The same occurs on an attempt to run a dynamically linked ELF executable with INTERP program header containing a non-existing path. And, of course, the same error is returned if the executable file itself doesn't exist, so there is no simple way to distinguish such cases.
Bash simply assumes[1] that if a file contains a hash-bang and the error from execve() is not recognized otherwise, it's a "bad interpreter".
Note that all of the above is completely unrelated to os.posix_spawn(): subprocess or os.execve() would produce the same message.
[1] https://git.savannah.gnu.org/cgit/bash.git/tree/execute_cmd.c?h=bash-5.1#n5854 |
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2021-02-03 13:51:18 | izbyshev | set | recipients:
+ izbyshev, vstinner, torsava, hroncok, pablogsal, nanjekyejoannah |
2021-02-03 13:51:18 | izbyshev | set | messageid: <1612360278.38.0.705835171408.issue43113@roundup.psfhosted.org> |
2021-02-03 13:51:18 | izbyshev | link | issue43113 messages |
2021-02-03 13:51:18 | izbyshev | create | |
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