How to get the variable value from variable list in unix?

Question

I have severial variables with prefix INPUT:

${INPUT_1:="sample.txt"}
${INPUT_2:="sample_2.txt"}
${INPUT_3:="sample_3.txt"}

And then I get a list of variable value with prefix INPUT by :

env | awk -F= '/^INPUT/ {print $2}'

the result:

sample.txt sample_2.txt sample_3.txt

And then I want to count the lines of each these three file, I tried

 var = env | awk -F= '/^INPUT/ {print $2}'
 wc -l $var

But it didn' work. Does someone could help me with applying wc -l on the variables selected?

Answer 1

The easiest way looks like this I guess :

for input in $var
do 
  wc -l $input
done