GNU bug report logs - #18585
Bad count in WC command?

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From: help-debbugs <at> gnu.org (GNU bug Tracking System)
To: "Schapovalov, Sebastian" <sebastian.schapovalov <at> telefonica.com>
Subject: bug#18585: closed (Re: bug#18585: Bad count in WC command?)
Date: Mon, 29 Sep 2014 20:48:04 +0000

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Your bug report

#18585: Bad count in WC command?  

which was filed against the coreutils package, has been closed.

The explanation is attached below, along with your original report.
If you require more details, please reply to 18585 <at> debbugs.gnu.org.

-- 
18585: http://debbugs.gnu.org/cgi/bugreport.cgi?bug=18585
GNU Bug Tracking System
Contact help-debbugs <at> gnu.org with problems

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From: Eric Blake <eblake <at> redhat.com>
To: "Schapovalov, Sebastian" <sebastian.schapovalov <at> telefonica.com>,
 18585-done <at> debbugs.gnu.org
Subject: Re: bug#18585: Bad count in WC command?
Date: Mon, 29 Sep 2014 14:47:02 -0600

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tag 18585 notabug
thanks

On 09/29/2014 07:25 AM, Schapovalov, Sebastian wrote:
> Hello, I was testing one parameter in my .sh and realised that the wc command return a different value that I was expected.  I send you a couple examples.
> 
> I have to validate a celular telephone number (in Argentina), so, it has to be a 10 chars parameter.
> 
> sarasa() -- seba > echo 1029384756 | wc -c
> 11

Classic user mistake.  'echo' outputs a trailing newline, which IS a
character,

> sarasa () -- seba > echo 1029384756 | wc -L
> 10

but does NOT contribute to the length of the longest line.  Try
comparing these two commands

echo 1029384756 | oc -tx1z
printf 1029384756 | oc -tx1z

to see what I mean.

I'm closing this as not a bug, but feel free to ask further questions.

-- 
Eric Blake   eblake redhat com    +1-919-301-3266
Libvirt virtualization library http://libvirt.org

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From: "Schapovalov, Sebastian" <sebastian.schapovalov <at> telefonica.com>
To: "bug-coreutils <at> gnu.org" <bug-coreutils <at> gnu.org>
Subject: Bad count in WC command?  
Date: Mon, 29 Sep 2014 13:25:40 +0000

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Hello, I was testing one parameter in my .sh and realised that the wc command return a different value that I was expected.  I send you a couple examples.

I have to validate a celular telephone number (in Argentina), so, it has to be a 10 chars parameter.

sarasa() -- seba > echo 1029384756 | wc -c
11

sarasa () -- seba > echo "1029384756" | wc -c
11

sarasa () -- seba > echo 1029384756 | wc -m
11

sarasa () -- seba > echo "1029384756" | wc -m
11

I got the correct value only with the “–L” option.

sarasa () -- seba > echo 1029384756 | wc -L
10

sarasa () -- seba > echo "1029384756" | wc -L
10

I tested it (with same output) in:

Linux 2.6.9-78.0.22.ELlargesmp #1 SMP Fri Apr 24 12:59:13 EDT 2009 x86_64 x86_64 x86_64 GNU/Linux
and
Linux 3.2.0-29-generic-pae #46-Ubuntu SMP Fri Jul 27 17:25:43 UTC 2012 i686 i686 i386 GNU/Linux


Regards! (and excuse me for my bad english)

Seba

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