Re: system and -e question


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Re: system and -e question

by 2teez (Vicar)

on Dec 29, 2012 at 05:23 UTC ( [id://1010786]=note: print w/replies, xml )

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in reply to system and -e question

Hi dicty,

"Question1: I use system call to create a soft link in my Perl code"

Just a suggestion....
If your system support symbolic links why not use symlink function instead.

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if you involve me, I'll understand.
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Re^2: system and -e question
by afoken (Chancellor) on Dec 29, 2012 at 18:25 UTC

2teez++. Using symlink avoids messing with the unknown system default shell:

Passing unquoted variables to a single-string system really begs for trouble, as soon as variables contain meta characters. Quoting rules differ with the shell used (and become a real nightmare on Windows), and there is no safe way to find which rules work as intended.

Using symlink also avoids the overhead of creating a new, complex process for just a single kernel call, and gives a clear error code in $! instead of returning some obscure exit code and some random text on STDERR of the child process.

Alexander

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