Add an example of how to use ldd -f.

usr.bin/ldd/ldd.1

@@ -1,6 +1,6 @@
 .\" $FreeBSD$
 .\"
-.Dd October 22, 1993
+.Dd May 15, 2008
 .Dt LDD 1
 .Os
 .Sh NAME
@@ -57,6 +57,13 @@ option displays a verbose listing of the dynamic linking headers
 encoded in the executable.
 See the source code and include
 files for the definitive meaning of all the fields.
+.Sh EXAMPLES
+The following is an example of a shell pipeline which uses the
+.Fl f
+option.
+It will print a report of all ELF binaries in the current directory,
+which link against libc.so.6:
+.Dl "find . -type f | xargs -n1 file -F " " | grep ELF | cut -f1 -d' ' | xargs ldd '%A %o\en' | grep libc.so.6"
 .Sh SEE ALSO
 .Xr ld 1 ,
 .Xr nm 1 ,