Shell Programming and Scripting

Missing $ on loop variable at value.txt line 1.

#!/usr/bin/perl
for file in `cat create2.txt`
do
cat ${file} |cut -d'|' -f1 >> firstcol.txt
done

      
      13 |example.txt
       8 |exeout.txt
       8 |test3.txt
       3 |value.txt

for file in `cat create2.txt| cut -d'|' -f2`

a.txt
b.txt
c.txt
d.txt

      13 |example.txt
       8 |exeout.txt
       8 |test3.txt
       3 |value.txt

ls > out_file

for line in out_file
do
cat $line | awk '{print $1}' $line >> result_file
done