Awk output to bash array?

kj6loh · 09-06-2009, 10:09 PM

I there any way to output the awk output to a bash array?

For example

a = awk -F: '{print $3}' myfile

myfile
10 20 30 40 50
20 30 40 50 60
90 80 70 60 50

a[0] = 30 40 70

So that
a[1] = 30
a[3]= 70

or something similar

crabboy · 09-06-2009, 10:40 PM

Code:

#!/bin/sh

i=0

for line in `awk '{print $3}' myfile`; do
  arr[$i]=$line
  i=`expr $i + 1`
done


echo ${arr[*]}

jschiwal · 09-06-2009, 10:47 PM

a=($(awk '{print $3}' myfile))

ghostdog74 · 09-07-2009, 12:19 AM

@OP, depending on what you wish to do, you can do everything in awk, no need to return values to bash.

Code:

awk '{a[++d]=$3}END{for(i=1;i<=d;i++){print a[i]} }' file

kj6loh · 09-07-2009, 12:36 PM

Yes I do know that I can do everything in AWK. but I want to avoid using system() if I can. Unless there's a way to test for the existence of a directory within awk NOT using system().