Date: Sat, 29 Jan 2005 23:51:36 -0500 From: Chuck Swiger <cswiger@mac.com> To: Andrew McNaughton <andrew@scoop.co.nz> Cc: freebsd-ports@freebsd.org Subject: Re: [HEADS UP] perl symlinks in /usr/bin will be gone Message-ID: <41FC67D8.2020609@mac.com> In-Reply-To: <20050130162753.D9021@a2.scoop.co.nz> References: <20050129202425.GA56998@heechee.tobez.org> <20050129220905.46ab86ae.lehmann@ans-netz.de> <41FBFDD9.7070605@mac.com> <20050130162753.D9021@a2.scoop.co.nz>
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Andrew McNaughton wrote: > On Sat, 29 Jan 2005, Chuck Swiger wrote: [ ... ] >> Well-behaved 3rd party scripts ought to start Perl via: >> >> #! /usr/bin/env perl >> >> ...so long as /usr/local/bin is in the $PATH, they should still work >> fine. > > I commonly use this approach, but I run into some problems with flags. > Probably a simple gotcha someone can help with. > > Eg the following useful constructs don't work: > > #!/usr/bin/env perl -p > #!/usr/bin/env perl -T > #!/usr/bin/env perl -w See "man perlrun" for some additional suggestions (and caveats), as it gives examples for passing -p to perl when invoked via /usr/bin/env or /bin/sh. You might also try putting a "--" between the 'env' and the 'perl' to indicate the end of command-line option processing to env. It's possible that taint mode cannot be invoked this way (as that needs to be set very early on), though. There also seems to exist a PERL5OPT variable which could be set like so: #!/usr/bin/env PERL5OPT='-w' perl This should support -T, too, only it will zap any additional args specified afterwards (or so the docs say)... -- -Chuck
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