Re^3: Confusion with finding strings in command output

I know that standard error is being redirected. Do look again at OP's code (simplified)...

my $SUCCESS = 0;
my %Error   = ( q[No such file or directory] => 1 );

my @out = qx { command here 2>&1 };
my $rc = $?;

if ( $rc == $SUCCESS )
{
  #  As I wrote earlier, if command was sucessful, then why would
  #  there be no-file-found error (under normal conditions)? Else,
  #  exit code cannot be trusted.
  ... = grep { $Error{$_} } @out;
  ...
}
...
[download]

Comment on Re^3: Confusion with finding strings in command output Download Code

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Re^4: Confusion with finding strings in command output by Laurent_R (Canon) on Aug 30, 2014 at 20:37 UTC
Hmm, there is a misunderstanding. My point is that we have no idea about what output this line: `my @out = qx { command here 2>&1 };` [download] produces, because we don't know what `command here` is. As an example, if "`command here`" if a shell `find . -name ... -print ...` command, it might very well produce successful lines as well as error lines.	[reply] [d/l] [select]