Compare two files


MAKE sure you sort the files first

sort file_unsorted > file1

sort file_unsorted2 > file2

The comm command (short for "common") may be useful comm - compare two sorted files line by line

#find lines only in file1
comm -23 file1 file2 

#find lines only in file2
comm -13 file1 file2 

#find lines common to both files
comm -12 file1 file2