Added MD5 hashing.

[finddup.git] / finddup.1

diff --git a/finddup.1 b/finddup.1
index 18c27e5..9cc21b4 100644 (file)
--- a/finddup.1
+++ b/finddup.1
@@ -61,19 +61,23 @@ show the real path of the files
 .TP
 \fB-i\fR, \fB--same-inodes-are-different\fR
 files with same inode are considered as different
+.TP
+\fB-m\fR, \fB--md5\fR
+use MD5 hashing
 
 .SH "BUGS"
 
 None known, probably many. Valgrind does not complain though.
 
+The MD5 hashing often hurts more than it helps, hence it is off by
+default. The only case when it should really be useful is when you
+have plenty of different files of same size, which does not happen
+often.
+
 .SH "WISH LIST"
 
 The format of the output should definitely be improved. Not clear how.
 
-The comparison algorithm could maybe be improved with some MD5 kind of
-signature. However, most of the time is taken by comparison for
-matching files, which are required even when using a hash.
-
 Their could be some fancy option to link two instances of the command
 running on different machines to reduce network disk accesses. Again,
 this may not help much, for the reason given above.