Because TMTOWTDI. May I suggest you can also 

qx(chmod 0705 '$filename');

[download]
or 
qx(chmod 0755 '$filename');

[download]
These would circumvent any possibility of Perl's misunderstanding the "u+x". If that actually applies.

--Chris

#!/usr/bin/perl -Tw
use Perl::Always or die;
my $perl_version = (5.12.5);
print $perl_version;

In reply to Re: How to use chmod u +x in perl by taint
in thread How to use chmod u +x in perl by fearthechris29

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