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Re: system and -e question

by 2teez (Priest)
on Dec 29, 2012 at 05:23 UTC ( #1010786=note: print w/ replies, xml ) Need Help??


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.

If you tell me, I'll forget.
If you show me, I'll remember.
if you involve me, I'll understand.
--- Author unknown to me


Comment on Re: system and -e question
Re^2: system and -e question
by afoken (Parson) 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

    --
    Today I will gladly share my knowledge and experience, for there are no sweeter words than "I told you so". ;-)

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