While-loop with awk - Shell Programming and Scripting

aigles · #4 (**permalink**) 08-28-2007

You don't need the awk_cmd command :

Code:

data=`cat $2 | xargs -n $1`

#echo $data

columns=$1
i=1
echo $columns

while [ "$columns" -gt 0 ]
do
   	echo "$data" | awk -v i=$1 '{sum+=$i} END {print sum/NR}'
	i=`expr $i + 1`
	columns=`expr $columns - 1`
done

If you want to keep it, you must use the eval command :

Code:

	awk_cmd="awk -v i=$1 '{sum+=$i} END {print sum/NR}'"
	echo "$data" | eval $awk_cmd

Jean-Pierre.