\fB-h\fR
display help and exit
.TP
+\fB-d\fR
+ignore files and directories starting with a dot
+.TP
+\fB-c\fR
+do not show which files from DIR2 corresponds to files from DIR1
+.TP
+\fB-g\fR
+show the file group IDs (one group for each content)
+.TP
\fB-r\fR
shows the real path of the files
.SH "BUGS"
-Every pair of different files with same content are listed, which
-results in K^2 printed lines when K files are similar.
+The display is not sorted by groups.
+
+.SH "EXAMPLES"
+.nf
+.B finddup -c blah something
+
+.fi
+List files found in
+.B ./blah/
+which have a matching file with exact same content in
+.B ./something/
+
+.P
+.B finddup ./sources not:./backup
+
+.fi
+List all files found in
+.B ./sources/
+which do not have content-matching equivalent in
+.B ./backup.sources
+
+.P
+.B finddup -g ./tralala ./cuicui | sort -n
+
+.fi
+List groups of files with same content which exist both in
+.B ./tralala/
+and
+.B ./cuicui/
.SH "AUTHOR"