.SH "NAME"
-finddup \- Find files common to several directories or not
+finddup \- Find files common to two directories (or not)
.SH "SYNOPSIS"
-\fBfinddup\fP [OPTION]... DIR1 [[^]DIR2]
+\fBfinddup\fP [OPTION]... DIR1 [[not:]DIR2]
.SH "DESCRIPTION"
-\fBfinddup\fP is a command line utility to find duplicate files, files
-common to two directories or files existing in one directories and not
-in another one.
-
-With a single directory argument, prints the duplicate files found in
-it. With two directories, prints the files common to both.
-
-If the second directory name starts with a ^, prints the files
-existing in DIR1 which do not exist in DIR2.
+With a single directory argument, \fBfinddup\fP prints the duplicate
+files found in it. With two directories, it prints either the files
+common to both DIR1 and DIR2, or with the not: prefix, the ones
+present in DIR1 and not in DIR2.
.SH "OPTIONS"
.TP