innobackupex should not assume /usr/bin/perl

[aeva black]

On hosts where perl is not installed in /usr/bin/, the innobackup script fails to find a valid interpreter.

[deva@host ]$ innobackupex --apply-log --use-mem=2G ./
bash: /usr/local/bin/innobackupex: /usr/bin/perl: bad interpreter: No such file or directory
[deva@host ]$ which perl
/usr/local/bin/perl

By comparison, all the percona-toolkit scripts work fine because they begin with:

#!/usr/bin/env perl

instead of:

#!/usr/bin/perl

[Brian Fraser (fraserbn)]

I wonder if using env perl is correct in any case -- for instance, my Linux box didn't have env originally. A nice point of comparison is Tom Christiansen's Unicode::Tussle, particularly the hacks that scripts like unichars ( http://cpansearch.perl.org/src/BDFOY/Unicode-Tussle-1.03/script/unichars ) go through to find a usable Perl.

But this is more of a nitpick than anything, so don't give it too much attention.

[Stewart Smith (stewart)]

Well... it works on all the platforms we officially support :)

[Baron Schwartz (baron-xaprb)]

It'll usually work on platforms we don't support, too. I've never seen it fail, personally. If it doesn't work, then I don't think any standard shebang line would work.

[Shahriyar Rzayev (rzayev-sehriyar)]

Percona now uses JIRA for bug reports so this bug report is migrated to: https://jira.percona.com/browse/PXB-838