topic diff in Operating System - HP-UX

diff

Sheng Jin — Wed, 20 Sep 2000 12:08:16 GMT

I need to do a line by line comparison on two very large files (2 MG), which are similar files. The "diff" command will give a message as "file too long, try -h". I tried -h option but it is not exactly what I want. Any other command will do the job.

Re: diff

CHRIS_ANORUO — Wed, 20 Sep 2000 12:15:40 GMT

Use bdiff- this is for large files.

Re: diff

CHRIS_ANORUO — Wed, 20 Sep 2000 12:16:05 GMT

Use bdiff - this is for large files.

Re: diff

federico_3 — Wed, 20 Sep 2000 12:17:19 GMT

you can try the comm command ( see man comm) :

comm -12 file1 file2 -> prints only the lines common to the 2 files

comm -23 file1 file2 -> prints only the lines in the first not in the second

Federico

Re: diff

James R. Ferguson — Wed, 20 Sep 2000 12:22:12 GMT

Hi:

The -h option of 'diff' is for "half-hearted" comparisons. For really big files, use 'bdiff'. You could also try 'cmp' or 'comm'. See the man pages for all of these.

...JRF...