Re: Output of a command

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Re^2: Output of a command by Niel (Initiate) on Jul 30, 2008 at 05:33 UTC
YES you are right. Thanks on this!!!!! The output is going to STDERR. Now my question is, should it go to STDERR when its not an error? this is just get the information of the product!!!!	[reply]
Re^3: Output of a command by ysth (Canon) on Jul 30, 2008 at 05:52 UTC
It's common, but by no means universal, for --version and sometimes --help to go to stderr. There isn't any standard, so "should" is not a meaningful question. -- Online Fortune Cookie Search Office Space merchandise	[reply]
Re^4: Output of a command by gaal (Parson) on Jul 30, 2008 at 06:05 UTC
It's a pet peeve of mine for help text explicitly requested to go to stderr. If I asked for it, and it's long, please put it on stdout so I don't have to work harder to pipe it into $PAGER. Of course, if something's wrong and you need to give me an error message with some helpful text, it's fine to put it on stderr to lessen the chance of breaking my pipes.	[reply]
Re^5: Output of a command by Anomynous Monk (Scribe) on Jul 30, 2008 at 06:35 UTC
Re^6: Output of a command by parv (Parson) on Jul 30, 2008 at 06:40 UTC
Re^6: Output of a command by Fletch (Bishop) on Jul 30, 2008 at 15:06 UTC
Some notes below your chosen depth have not been shown here
Re^3: Output of a command by Alien (Monk) on Jul 30, 2008 at 06:20 UTC
You could be using IPC::Open3 , it will get output from STDOUT,STDERR .	[reply]
Re^3: Output of a command by Perlbotics (Archbishop) on Jul 30, 2008 at 10:06 UTC
Some examples (*nix) if you only need one stream of the commands output: $command = "curl -D- http://www.perlmonks.org"; # mixes stderr and st +dout # stdout only, no stderr noise $stdout_only = `$command 2>/dev/null`; # stderr only, no stdout noise $stderr_only = `$command 2>&1 1>/dev/null`; # both mixed up (usually not a good idea!) # Aliens suggestion to use open3 is better in this case. $brundlefly = `$command 2>&1`; [download]	[reply] [d/l]


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