Re: Question using system.

From the free manual for system:

This is not what you want to use to capture the output from a command, for that you should use merely backticks or qx//, as described in "`STRING`" in perlop.

my @output = `getfilesdata file.txt`;
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Update: This is also a FAQ in perlfaq8, Why can't I get the output of a command with system()?

Comment on Re: Question using system. Download Code

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Re^2: Question using system. by pjotrik (Friar) on Jul 10, 2008 at 15:05 UTC
Or you may use open with pipe, as described in perlipc. That allows you to work with the commands output as with any other (readonly) filehandle. `open(my $cmd, 'getfilesdata file.txt \|')`	[reply] [d/l]
Re^3: Question using system. by ikegami (Patriarch) on Jul 10, 2008 at 18:28 UTC
Better yet: `open(my $cmd, '-\|', 'getfilesdata', 'file.txt')` [download]	[reply] [d/l]
Re^4: Question using system. by oko1 (Deacon) on Jul 10, 2008 at 20:36 UTC
Perhaps I don't understand IPC as well as I thought I did. ikegami, would you mind explaining why this is supposed to be better? -- Human history becomes more and more a race between education and catastrophe. -- HG Wells	[reply]
Re^5: Question using system. by ikegami (Patriarch) on Jul 10, 2008 at 20:54 UTC
Re^6: Question using system. by oko1 (Deacon) on Jul 10, 2008 at 21:52 UTC
Some notes below your chosen depth have not been shown here
Re^2: Question using system. by rovf (Priest) on Jul 11, 2008 at 09:17 UTC
Why can't I get the output of a command with system()? Because it is not designed that way. `system` has a different purpose, that is running a program, which even might be interactive. Think about, for instance, `system('bash')`. -- Ronald Fischer <ynnor@mm.st>	[reply] [d/l] [select]