refine output of Dumper

kaka_2 has asked for the wisdom of the Perl Monks concerning the following question:

Hello Monks, i have following code which works well. only problem is output does not looks good.

use strict;
use warnings;
use Data::Dumper;
$Data::Dumper::Terse=1;
my $StatChk="cat /tmp/teststatus.txt | grep -v OK";
my $GoodStat="OK";

my @SChk_Out;

open (DChk, "$StatChk |") || die "Failed: $!\n";
@SChk_Out = <DChk>; 
close (DChk);

print "Output of command is =".Dumper(@SChk_Out);
[download]

and Output is:

[
          'Station 7777: Not good.
',
          'Station 7778: Not Good
'
        ]
[download]

how can i have output just

Station 7777: Not good.
Station 7778: Not good.
[download]

it is important that i use the Dumper. in my actual program i cant just print array. (kind of limitation)

any help in this regard will be appriciated.

Comment on refine output of Dumper Select or Download Code

Replies are listed 'Best First'.
Re: refine output of Dumper by choroba (Cardinal) on Oct 24, 2014 at 10:08 UTC
To remove newlines, just use chomp: `@SChk_Out = <DChk>; chomp @SChk_Out;` [download] BTW, your `cat` is useless. You can get rid of it as `grep` accepts filename as an argument: `my $StatChk = 'grep -v OK /tmp/teststatus.txt';` [download] لսႽ† ᥲᥒ⚪⟊Ⴙᘓᖇ Ꮅᘓᖇ⎱ Ⴙᥲ𝇋ƙᘓᖇ	[reply] [d/l] [select]
Re: refine output of Dumper by McA (Priest) on Oct 24, 2014 at 10:13 UTC
Hi, your question is a little bit weird. You want the output of the array line by line. In your array you do have every element ending in a newline character. So a simple `print @SChk_Out` [download] should produce the output what you want. What is the problem? McA	[reply] [d/l]
Re: refine output of Dumper by marto (Cardinal) on Oct 24, 2014 at 10:08 UTC
"in my actual program i cant just print array. (kind of limitation)" Why?	[reply]
Re^2: refine output of Dumper by kaka_2 (Sexton) on Oct 24, 2014 at 10:23 UTC
i can not say why? i work on a System Management tool which allow me to embedded perl codes in it but not exactly as we write perl program. i cant complie it outside the environment tool provides, and there is no way to print. Only thing i can do is using internal API's i can send the output to console and last time when i tried to send the output of array it did not work for me for that reason i had to use Dumper. Thanks. -KAKA-	[reply]
Re^3: refine output of Dumper by Tux (Canon) on Oct 24, 2014 at 11:38 UTC
That sounds more like you cannot print to `STDOUT`, but can you print to `STDERR`? Can you `warn`? Enjoy, Have FUN! H.Merijn	[reply] [d/l] [select]
Re^3: refine output of Dumper by Anonymous Monk on Oct 24, 2014 at 11:12 UTC
Do you send the Dumper output then to wherever (in place of printing yourself)?	[reply]
Re: refine output of Dumper by Loops (Curate) on Oct 24, 2014 at 10:19 UTC
Hi there. I don't believe you about having to use Dumper ;o) And why not use Perl instead of relying on the external grep command?: `my $StatChk='/tmp/teststatus.txt'; open my $DChk, '<', $StatChk \|\| die "Failed: $!\n"; my @SChk_Out = grep {!/OK/} <$DChk>; close ($DChk); print @SChk_Out;` [download] Update: Okay I should have believed; my bad.	[reply] [d/l]
Re: refine output of Dumper by RonW (Parson) on Oct 24, 2014 at 16:31 UTC
`print "Output of command is =\n".join('',@SChk_Out);`	[reply] [d/l]


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