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Re: CDPATH and shell scripts

Russ Allbery <rra@debian.org> writes:

> Jonathan Yu <jonathan.i.yu@gmail.com> writes:
>> How to fix them? Write Perl scripts, and turn on taint checking --
>> that fixes the four issues above, because it makes the script exit if
>> any of them look dangerous. Env::Sanctify::Auto is a Perl module that
>> automatically cleans up the paths.
>> My advice:
>> 1. Write scripts that might be run as root (or setuid root) using Perl
>> 2. Turn on taint checking
>> 3. Consider using Env::Sanctify::Auto (shameless plug)
> I would really prefer that people not start writing maintainer scripts
> in Perl as a matter of course.  Perl is harder to analyze for programs
> like lintian than shell scripts (which are already hard enough).
> -- 
> Russ Allbery (rra@debian.org)               <http://www.eyrie.org/~eagle/>

Not to mention humans. :)


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