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Re: The system command and waiting for the child process to finish

by betterworld (Curate)
on Sep 29, 2008 at 11:38 UTC ( #714321=note: print w/replies, xml ) Need Help??


in reply to The system command and waiting for the child process to finish

If $file contains "&" or other funny characters, you should use the several-arguments way of calling system. Otherwise "&" will instruct the shell to start mplayer in the background, which would explain your problem.

system('mplayer', '-arg1', '-arg2', $file) and die "could not run mpla +yer";

I prefer this form unless I really need the shell's functionality.

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[LanX]: not my code ...
[choroba]: yeah, sounds like one of the strings is not flagged as UTF-8
[choroba]: which usually means its input wasn't handled correctly
[Corion]: choroba: Yeah, I think that would be the good solution
[LanX]: I suspect the first string which comes from the DB ...
[LanX]: ... but this part is already in production for a year now
[Corion]: LanX: The "good" approach here would be to use the appropriate DBI parameters to make the driver decode strings properly. But that will have a ripple-on effect of messing up all the places where manual decoding happens ;)
[LanX]: which means albeit being broken UTF8 it'll be handled correctly
[LanX]: and the problem only occurs since we changed the emails to base64
[LanX]: my main problem will be to cnvince my colleagues that our productive code is broken oO ... so in the end I will just make a workaround :-/

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