Question

I am comparing two files, each having one column and n number of rows.

file 1

vincy
alex
robin

file 2

Allen
Alex
Aaron
ralph
robin

if the data of file 1 is present in file 2 it should return 1 or else 0, in a tab seprated file.

Something like this

vincy 0
alex 1
robin 1

What I am doing is

#!/bin/bash
for i in `cat file1 `
do
cat file2 | awk '{ if ($1=="'$i'") print 1 ; else print 0 }'>>binary
done

the above code is not giving me the output which I am looking for.

Kindly have a look and suggest correction.

Thank you

Answer 1

The following code should do it.

Take a close look to the BEGIN and END sections.

#!/bin/bash
rm -f binary
for i in $(cat file1); do
     awk 'BEGIN {isthere=0;} { if ($1=="'$i'") isthere=1;} END { print "'$i'",isthere}' < file2 >> binary
done