Messages in this thread | | | Date | Tue, 03 May 2005 13:43:40 -0400 | From | Bill Davidsen <> | Subject | Re: Mercurial 0.4b vs git patchbomb benchmark |
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Linus Torvalds wrote: > > On Mon, 2 May 2005, Bill Davidsen wrote: > >>>-#!/usr/bin/python >>>+#!/usr/bin/env python > > >>Could you explain why this is necessary or desirable? I looked at what >>env does, and I am missing the point of duplicating bash normal >>behaviour regarding definition of per-process environment entries. > > > It's not about environment. > > It's about the fact that many people have things like python in > /usr/local/bin/python, because they compiled it themselves or similar. > > Pretty much the only path you can _really_ depend on for #! stuff is > /bin/sh. > > Any system that doesn't have /bin/sh is so fucked up that it's not worth > worrying about. Anything else can be in /bin, /usr/bin or /usr/local/bin > (and sometimes other strange places). > > That said, I think the /usr/bin/env trick is stupid too. It may be more > portable for various Linux distributions, but if you want _true_ > portability, you use /bin/sh, and you do something like > > #!/bin/sh > exec perl perlscript.pl "$@" > > instead. > Linus > And that eliminates the need for having /usr/bin/env in the "expected" place. I like it.
Wish there was a way to specify "use path" without all this workaround.
-- -bill davidsen (davidsen@tmr.com) "The secret to procrastination is to put things off until the last possible moment - but no longer" -me
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