Counting Occurances in Two Files - UNIX for Dummies Questions & Answers

Keith Gergel · #1 06-25-2001

I have two files I want to compare, one is a list of variables and the other is a text file COBOL program.
Basically what I want to do is display only those variables that appear in the COBOL program only once. However I would also accept a count of each variable as it appears in the COBOL program.

fgrep –f VAR TEST.CBL
will display the lines of the code that match the variable file, however what I need is to locate those variables that have only one match.

Any ideas?

PxT · #2 06-26-2001

I dont think you can do it directly with grep. How about:

Code:

#!/bin/ksh
for f in `cat VAR`
do
  COUNT=`grep $f TEST.CBL | wc -l`
  if [[ $COUNT -eq 1 ]]
  then
     echo $f
  fi
done

Keith Gergel · #3 06-26-2001

Works great!
Thank you PxT!

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