Index: head/sysutils/Makefile
===================================================================
--- head/sysutils/Makefile
+++ head/sysutils/Makefile
@@ -559,6 +559,7 @@
     SUBDIR += lookat
     SUBDIR += lr
     SUBDIR += lsof
+    SUBDIR += lsop
     SUBDIR += ltrace
     SUBDIR += lttng-tools
     SUBDIR += lttng-ust
Index: head/sysutils/lsop/Makefile
===================================================================
--- head/sysutils/lsop/Makefile
+++ head/sysutils/lsop/Makefile
@@ -0,0 +1,28 @@
+# $FreeBSD$
+
+PORTNAME=	lsop
+PORTVERSION=	0.1
+DISTVERSIONPREFIX=	v
+CATEGORIES=	sysutils
+
+MAINTAINER=	606u@dir.bg
+COMMENT=	List all processes running with outdated binaries or shared libraries
+
+LICENSE=	BSD2CLAUSE
+LICENSE_FILE=	${WRKSRC}/LICENSE
+
+USE_GITHUB=	yes
+GH_ACCOUNT=	606u
+
+PLIST_FILES=	sbin/lsop \
+		libexec/nagios/check_restart
+
+post-patch:
+	@${REINPLACE_CMD} -e 's|lsop|${PREFIX}/sbin/lsop|' ${WRKSRC}/check_restart
+
+do-install:
+	${INSTALL_PROGRAM} ${WRKSRC}/lsop ${STAGEDIR}${PREFIX}/sbin
+	@${MKDIR} ${STAGEDIR}${PREFIX}/libexec/nagios
+	${INSTALL_SCRIPT} ${WRKSRC}/check_restart ${STAGEDIR}${PREFIX}/libexec/nagios
+
+.include <bsd.port.mk>
Index: head/sysutils/lsop/distinfo
===================================================================
--- head/sysutils/lsop/distinfo
+++ head/sysutils/lsop/distinfo
@@ -0,0 +1,3 @@
+TIMESTAMP = 1488798320
+SHA256 (606u-lsop-v0.1_GH0.tar.gz) = e69bcc173c24672dc320da0c30030d0790b25a0869f39379dbfa179282421df9
+SIZE (606u-lsop-v0.1_GH0.tar.gz) = 3918
Index: head/sysutils/lsop/pkg-descr
===================================================================
--- head/sysutils/lsop/pkg-descr
+++ head/sysutils/lsop/pkg-descr
@@ -0,0 +1,7 @@
+lsop is a FreeBSD utility to list all processes running with outdated
+binaries or shared libraries (that is, binaries or shared libraries
+that have been upgraded or simply deleted).
+
+lsop does not currently work when started in a FreeBSD jail!
+
+WWW: https://github.com/606u/lsop