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From: Chimu on 13 Mar 2010 08:15
I got data in $x separated by :, further each field has 4 values and i
want get those. So i come with IFS and read code
Input
x="tab1,c,1,3,db1:tab2,d,21,13,db45:tab12,t,11,16,db4"

output
Data feed: tab1 c 1 3 db1
Data feed: tab2 d 21 13 db45
Data feed: ab12 t 11 16 db4

my code so far
~~~~~~~~~~
while IFS=: read -r field
do
while IFS=, read -r a b c d
do
echo "Data feed: $a $b $c $d"
done <<<"$field"
#IFS=:
done <<<$x
~~~~~~~~~~

so far it is not working and i'm not able to pull data. i don't wanna
use external tool just bash builtin and IFS. any thoughts on how to
fix this? are you allowed to use multiple IFS? btw, I'm using bash 3.x
on Debian Linux server.




From: pk on 15 Mar 2010 06:46
Chimu wrote:

> I got data in $x separated by :, further each field has 4 values and i
> want get those. So i come with IFS and read code
> Input
> x="tab1,c,1,3,db1:tab2,d,21,13,db45:tab12,t,11,16,db4"
>
> output
> Data feed: tab1 c 1 3 db1
> Data feed: tab2 d 21 13 db45
> Data feed: ab12 t 11 16 db4
>
> my code so far
> ~~~~~~~~~~
> while IFS=: read -r field
> do
> while IFS=, read -r a b c d
> do
> echo "Data feed: $a $b $c $d"
> done <<<"$field"
> #IFS=:
> done <<<$x
> ~~~~~~~~~~
>
> so far it is not working and i'm not able to pull data. i don't wanna
> use external tool just bash builtin and IFS. any thoughts on how to
> fix this? are you allowed to use multiple IFS? btw, I'm using bash 3.x
> on Debian Linux server.

You can try

oifs=$IFS; IFS=\:
set -- "$x"
IFS=$oifs

for f; do
IFS=, read a b c d e <<<"$f"
echo "Data feed: $a $b $c $d $e"
done

From: pk on 15 Mar 2010 06:48
pk wrote:

> oifs=$IFS; IFS=\:
> set -- "$x"

Sorry, wrong. The should be

set -- $x

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