Re: how to retrieve the error message returned by the system command

If you're running on a *nix OS, you could redirect the standard error to a temporary file and then parse the contents if it the file exists.

my $ERR_FILE = q{/tmp/error_message.txt};

qx{COMMAND 2>$ERR_FILE};

if ( -f $ERR_FILE ) {
    open my $FH, '<', $ERR_FILE;
    my @err_msg = <$FH>;
    close $FH;
    unlink $ERR_FILE or die "Can't remove $ERR_FILE: $!";
}
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--njcodewarrior

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Re^2: how to retrieve the error message returned by the system command by swampyankee (Parson) on Mar 27, 2006 at 17:19 UTC
You can do the same thing (with pretty much the same syntax) on modern versions of Windows. I'd `use File::Temp;` and one of the `mktemp` family of functions to generate a name, but that's more a style issue than a real difference. emc " The most likely way for the world to be destroyed, most experts agree, is by accident. That's where we come in; we're computer professionals. We cause accidents." —Nathaniel S. Borenstein	[reply]

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Re^2: how to retrieve the error message returned by the system command
by swampyankee (Parson) on Mar 27, 2006 at 17:19 UTC

You can do the same thing (with pretty much the same syntax) on modern versions of Windows. I'd use File::Temp; and one of the mktemp family of functions to generate a name, but that's more a style issue than a real difference.

emc

" The most likely way for the world to be destroyed, most experts agree, is by accident. That's where we come in; we're computer professionals. We cause accidents."
—Nathaniel S. Borenstein

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