Re: Aritmetica en bash (comparando tamaños de archivos)

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#6996

From: Hue-Bond
Date: Sat, 19 Apr 2003 21:26

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On Sat, 19 Apr 2003 18:09:09 +0000 (UTC), Benjam�n Albi�ana
<benjamin@hierroycuero.org> wrote:
>
>> Mejor 'wc -c archivo' y as� nos ahorramos un proceso.
> 
>   �wc -c < archivo?  

No ahorra nada. En ambos casos se crea un nuevo proceso; lo �nico que cambia
es el descriptor de archivo del que wc lee. Aqu� un par de ejemplos con un
archivo de >2000 l�neas:

$ time for I in `seq 1 100`; do wc -l file > /dev/null; done

real    0m4.098s
user    0m2.650s
sys     0m0.940s

real    0m4.155s
user    0m2.750s
sys     0m0.800s

real    0m4.169s
user    0m2.860s
sys     0m0.750s

$ time for I in `seq 1 100`; do wc -l < file > /dev/null; done

real    0m4.212s
user    0m2.960s
sys     0m0.700s

real    0m4.045s
user    0m2.810s
sys     0m0.760s

real    0m4.158s
user    0m2.750s
sys     0m0.830s


-- 
 David Serrano <cyberchat2000.com@hue> - Linux Registered User #87069

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From: Hue-Bond <ecolnet@cyberchat2000.com>
Newsgroups: es.comp.os.linux.programacion
Subject: Re: Aritmetica en bash (comparando tamaños de
 archivos)
Date: Sat, 19 Apr 2003 21:26:49 +0000 (UTC)
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