Re: using variable inside system call

i don't know what a node is in your example, but what doesn't work and what error message do you get?
generally, system() with a list as parameters is safer than a string, so maybe calling
system(qw(wrunprb * * *), $node); will work. but that's just a guess.
i suppose $[node] is just a typo...

update: ah, i didn't recognize the single quotes. anyway, $[node] is a syntax error.

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Re: using variable inside system call by Abigail-II (Bishop) on Apr 02, 2004 at 15:39 UTC
Well, calling system with a list as parameters isn't necessarely 'safer'. It means that the shell is bypassed. Since you don't know what's inside `$node`, you don't know whether it matters or not. Perhaps `$node` contains whitespace, or backticks, or dollar signs, making it vital that the shell plays it part. Don't suggest alternatives without pointing out what may break. Abigail	[reply]
Re: Re: using variable inside system call by tinita (Parson) on Apr 02, 2004 at 15:54 UTC
Well, calling system with a list as parameters isn't necessarely 'safer'. ok, granted, i meant 'in most cases'. in most cases you don't need the shell. i think. (!) Since you don't know what's inside $node, you don't know whether it matters or not. that's what i said. i said i don't know what's a 'node' supposed to be. i stated clearly that i'm making a guess. Don't suggest alternatives without pointing out what may break. if i always pointed all things that could possibly go wrong i wouldn't have time for anything else. what is perlmonks all about if i can't suggest alternatives when i state at the same time that i'm guessing? ok, a link to the system() function would have been nice.	[reply]