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Re: [shell-script] Decrementar var...
From: |
Daniel Duclos |
Subject: |
Re: [shell-script] Decrementar var... |
Date: |
Fri, 28 Dec 2001 16:53:57 -0200 (BRST) |
On Fri, 28 Dec 2001 address@hidden wrote:
> Faz o seguinte: VAR=$((VAR-1))
faltou o $:
[daniduc@cerpa daniduc]$ var=10; echo $var; var=$(($var-1)); echo $var
10
9
[daniduc@cerpa daniduc]$
Isso eh so pra uma vez. Digamos que voce queira fazer uma contagem
regressiva de 10 a 1:
[daniduc@cerpa daniduc]$ var=10; while [ $var -gt 0 ]; do echo $var;
var=$(($var-1)); done
10
9
8
7
6
5
4
3
2
1
[daniduc@cerpa daniduc]$
Daniel Lobato Duclos - address@hidden - http://www.cybershark.net
GPG Key fingerprint = A21B 40DF 4B8D 3CE6 9284 E764 4DF0 144C 509F 080F
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