Article View: pl.comp.lang.perl
Article #1192Re: Pytanie o exec w perlu.
From: Piotr Piatkowski
Date: Tue, 07 Apr 1998 12:17
Date: Tue, 07 Apr 1998 12:17
26 lines
1468 bytes
1468 bytes
rafal wiosna <raf@NOSPAM.polbox.pl> wrote:
: * Jerzy Orzeszek <Jerzy.Orzeszek@univcomp.waw.pl> wrote:
: > {
: > print "Program ropoczyna kopiowanie:\n";
: > print "Proszę podać katalog ródłowy:\n";
: > $s = <STDIN>;
: > exec "cp $u /home/user/katalog";
: > }
: Najprościej tak:
:
: $tmp = `cp $u ..`;
Nie, nie, nie! man perlstyle:
o Avoid using grep() (or map()) or `backticks` in a void context, that
is, when you just throw away their return values. Those functions all
have return values, so use them. Otherwise use a foreach() loop or the
system() function instead.
Czyli - jeżeli nie potrzebujesz tego co wypisze cp, to zrób tak:
system( "cp $u .." );
--
Piotr Piątkowski, Uczelniane Centrum Informatyki, AGH Krakow, POLAND
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