Usage:

./verify [-s n] dir1 dir2 ...dirm

./verify will compare every nth file in
directories dir1, dir2 through dirm using md5
hashes.

n defaults to 1000

m can be as high as you want (limited by VM),
and a meaningful comparision will require at least
2 directories.  If you just want to see if you can
read every nth file, then a dirlist of length 1 is
sort of useful.  To see if you are getting consistent
data from a directory hiearchy, list the same dirmore than once.
Only files in the first directory hierarchy (dir1) are
sought in the 2..mth directories

Wed Nov 17: Added a -p flag that makes verify ignore file owner, group and permissions. Only the file size is compared, and if the lengths are equal, then an md5 is computed and compared.

Note: Because verify uses md5, it is not well-suited to checking files for cryptographic purposes, but should be reasonable for other forms of data integrity checks.

You can e-mail the author with questions or comments: