Hi,
Some remarks:
- just try « expr ${VAR} + 1 » (with blanc between car)
- use simple redirection (« < ») with a simple reference to file (« done < list.txt »)
- use « ${VAR} » to manage variables
- you can use numeric notation to increment VAR (p.e. « total=$(( ${total} + 1 )) »)
An other way to do that: AWK.
Regards
> Le 23 juil. 2020 à 15:46, Jerry Geis <jerry.geis at gmail.com> a écrit :
>
> I have a simple script:
> #!/bin/bash
> #
> index=0
> total=0
> names=()
> ip=()
> while read -r LINE
> do
> NODENAME=` echo $LINE | cut -f 1 -d ','`
> IP=` echo $LINE | cut -f 2 -d ','`
> names[index]="$NODENAME"
> ip[index]="$IP"
> index=`expr index+1`
> total=`expr total+1`
> done <<< $(cat list.txt)
>
> simple file:
> more list.txt
> name1,ip1
> name2,ip2
> name3,ip3
>
> output when running:
> sh -x ./test_bash.sh
> + index=0
> + total=0
> + names=()
> + ip=()
> ++ cat list.txt
> + read -r LINE
> ++ echo name1,ip1 name2,ip2 name3,ip3
> ++ cut -f 1 -d ,
> + NODENAME=name1
> ++ echo name1,ip1 name2,ip2 name3,ip3
> ++ cut -f 2 -d ,
> + IP='ip1 name2'
> + names[index]=name1
> + ip[index]='ip1 name2'
> ++ expr index+1
> + index=index+1
> ++ expr total+1
> + total=total+1
> + read -r LINE
> + echo name1
> name1
>
>
> Question is why is it not reading one line at a time ?
> All I get is the first one.
> I'm just trying to build the array of the items in the file and then list
> them at this point.
>
> Thanks
>
> Jerry
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