matching 2 exact fields

Shell Programming and Scripting
1

Dear experts,

I have a file1 that looks like

60127930928 2091
60129382039 2092
60126382937 2091
60128937928 2061
60127329389 2062
60123748730 2061
60128730293 2061

and file 2 that looks like

60127930928 2091
60129382039 2092
60126382937 2093
60128937928 2061
60127329389 2063
60123748730 2061
60128730293 2061

In both files, i need to match the 2 fields exactly (separated by space) and output the lines in file2 that does not match file1. For example, the output for the 2 files above should be

60126382937 2093
60127329389 2063

Ive tried using "join" but i cant match 2 fields. Please help !

2

comm -13 file1 file2 should do it.

comm normally outputs 3 columns... the lines in file1 only, the lines in file2 only, and the lines that are in both. The -1 and -3 suppress the output of the 1st and 3rd columns, so you are just left with the lines that are in file2 only.

3

Thanks annihilannic. Great