Re: bash question

[Sjoerd Mullender <sjoerd acm org>]

Miner, Jonathan W (CSC) (US SSA) wrote:
> 
> 
> -----Original Message-----
> From:	fedora-list-bounces redhat com on behalf of Dario Lesca
> Sent:	Wed 10/31/2007 09:12 AM
> To:	Fedora Project List
> Cc:	
> Subject:	bash question
> 
> In this shell script:
> 
>> #!/bin/bash
>> i=0
>>
>> printf "a a a\nb b b\nc c c\n" |
>> while read x
>> do
>>         i=$[i+1]
>>         echo "$x: ($i)"
>> done
>>
>> echo $i
> 
> -------------------------------
> 
> By pipe'ing the commands together, you cause the while loop to be executed in a subshell. Change your script to be:
> 
> #!/bin/bash
> i=0
> 
> while read x
> do
>          i=$[i+1]
>          echo "$x: ($i)"
> done << _EOF_
> a a a
> b b b
> c c c
> _EOF_
> 
> echo $i
> 
> 
> 

Or:

#!/bin/bash
printf "a a a\nb b b\nc c c\n" | {
i=0
while read x
do
    i=$[i+1]
    echo "$x: ($i)"
done
echo $i
}



-- 
Sjoerd Mullender

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