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0 pointstombert4mo ago0 comments

I didn't know that actually. I'll start using that from this point forward.

0 comments

kreetx4mo ago

/usr/bin/env and /bin/sh are part of the POSIX standard, this is why NixOS has those available.

jlokier4mo ago

> /usr/bin/env and /bin/sh are part of the POSIX standard, this is why NixOS has those available.

Contrary to popular belief, those aren't in the POSIX standard.

The following are not in the POSIX standard, they are just widely implemented:

  - "#!" line.
  - /bin/sh as the location of a POSIX compliant shell, or any shell.
  - /usr/bin/env as the location of an env program.
  - The -S option to env.

Guvante4mo ago

I think you are using "not required by the POSIX standard" when you say "not in" which is not an accurate shorthand.

#! is certainly in the POSIX standard as the exact topic of "is /bin/sh always a POSIX" shell is a discussion point (it is not guaranteed since there were systems that existed at the time that had a non-POSIX shell there)

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johnisgood4mo ago

It is good practice to be using it everywhere.

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