Index: head/usr.bin/grep/Makefile
===================================================================
--- head/usr.bin/grep/Makefile
+++ head/usr.bin/grep/Makefile
@@ -25,12 +25,14 @@
 .if ${MK_BSD_GREP} == "yes"
 LINKS=	${BINDIR}/grep ${BINDIR}/egrep \
 	${BINDIR}/grep ${BINDIR}/fgrep \
+	${BINDIR}/grep ${BINDIR}/rgrep \
 	${BINDIR}/grep ${BINDIR}/zgrep \
 	${BINDIR}/grep ${BINDIR}/zegrep \
 	${BINDIR}/grep ${BINDIR}/zfgrep
 
 MLINKS= grep.1 egrep.1 \
 	grep.1 fgrep.1 \
+	grep.1 rgrep.1 \
 	grep.1 zgrep.1 \
 	grep.1 zegrep.1 \
 	grep.1 zfgrep.1
Index: head/usr.bin/grep/grep.1
===================================================================
--- head/usr.bin/grep/grep.1
+++ head/usr.bin/grep/grep.1
@@ -34,7 +34,7 @@
 .Dt GREP 1
 .Os
 .Sh NAME
-.Nm grep , egrep , fgrep ,
+.Nm grep , egrep , fgrep , rgrep ,
 .Nm zgrep , zegrep , zfgrep
 .Nd file pattern searcher
 .Sh SYNOPSIS
@@ -341,6 +341,10 @@
 making searches potentially less expensive.
 .It Fl R , Fl r , Fl Fl recursive
 Recursively search subdirectories listed.
+(i.e. force
+.Nm grep
+to behave as
+.Nm rgrep ) .
 .It Fl S
 If
 .Fl R