diff --git a/cddl/contrib/opensolaris/cmd/dtrace/test/tst/common/mib/tst.icmp.ksh b/cddl/contrib/opensolaris/cmd/dtrace/test/tst/common/mib/tst.icmp.ksh
index b1cac20fc8db..6def4da1062b 100644
--- a/cddl/contrib/opensolaris/cmd/dtrace/test/tst/common/mib/tst.icmp.ksh
+++ b/cddl/contrib/opensolaris/cmd/dtrace/test/tst/common/mib/tst.icmp.ksh
@@ -1,79 +1,79 @@
 #
 # CDDL HEADER START
 #
 # The contents of this file are subject to the terms of the
 # Common Development and Distribution License (the "License").
 # You may not use this file except in compliance with the License.
 #
 # You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
 # or http://www.opensolaris.org/os/licensing.
 # See the License for the specific language governing permissions
 # and limitations under the License.
 #
 # When distributing Covered Code, include this CDDL HEADER in each
 # file and include the License file at usr/src/OPENSOLARIS.LICENSE.
 # If applicable, add the following below this CDDL HEADER, with the
 # fields enclosed by brackets "[]" replaced with your own identifying
 # information: Portions Copyright [yyyy] [name of copyright owner]
 #
 # CDDL HEADER END
 #
 
 #
 # Copyright 2007 Sun Microsystems, Inc.  All rights reserved.
 # Use is subject to license terms.
 #
 # ident	"%Z%%M%	%I%	%E% SMI"
 
 #
 # This script tests that several of the the mib:::icmp* probes fire and fire
 # with a valid args[0].
 #
 script()
 {
 	$dtrace -s /dev/stdin <<EOF
 	mib:::icmpInEchos
 	{
 		in = args[0];
 	}
 
 	mib:::icmpOutEchoReps
 	{
 		reps = args[0];
 	}
 
 	mib:::icmpOutMsgs
 	{
 		msgs = args[0];
 	}
 
 	profile:::tick-10msec
 	/in && reps && msgs/
 	{
 		exit(0);
 	}
 EOF
 }
 
 pinger()
 {
 	while true; do
 		ping -A inet localhost
-		/usr/bin/sleep 1
+		sleep 1
 	done
 }
 
 if [ $# != 1 ]; then
 	echo expected one argument: '<'dtrace-path'>'
 	exit 2
 fi
 
 dtrace=$1
 
 pinger &
 pinger=$!
 script
 status=$?
 
 kill $pinger
 exit $status
diff --git a/cddl/contrib/opensolaris/cmd/dtrace/test/tst/common/mib/tst.udp.ksh b/cddl/contrib/opensolaris/cmd/dtrace/test/tst/common/mib/tst.udp.ksh
index a492124c9c17..10a83cbd06fd 100644
--- a/cddl/contrib/opensolaris/cmd/dtrace/test/tst/common/mib/tst.udp.ksh
+++ b/cddl/contrib/opensolaris/cmd/dtrace/test/tst/common/mib/tst.udp.ksh
@@ -1,74 +1,74 @@
 #
 # CDDL HEADER START
 #
 # The contents of this file are subject to the terms of the
 # Common Development and Distribution License (the "License").
 # You may not use this file except in compliance with the License.
 #
 # You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
 # or http://www.opensolaris.org/os/licensing.
 # See the License for the specific language governing permissions
 # and limitations under the License.
 #
 # When distributing Covered Code, include this CDDL HEADER in each
 # file and include the License file at usr/src/OPENSOLARIS.LICENSE.
 # If applicable, add the following below this CDDL HEADER, with the
 # fields enclosed by brackets "[]" replaced with your own identifying
 # information: Portions Copyright [yyyy] [name of copyright owner]
 #
 # CDDL HEADER END
 #
 
 #
 # Copyright 2007 Sun Microsystems, Inc.  All rights reserved.
 # Use is subject to license terms.
 #
 # ident	"%Z%%M%	%I%	%E% SMI"
 
 #
 # This script tests that several of the the mib:::udp* probes fire and fire
 # with a valid args[0].
 #
 script()
 {
 	$dtrace -s /dev/stdin <<EOF
 	mib:::udpHCOutDatagrams
 	{
 		out = args[0];
 	}
 
 	mib:::udpHCInDatagrams
 	{
 		in = args[0];
 	}
 
 	profile:::tick-10msec
 	/in && out/
 	{
 		exit(0);
 	}
 EOF
 }
 
 rupper()
 {
 	while true; do
 		rup localhost
-		/usr/bin/sleep 1
+		sleep 1
 	done
 }
 
 if [ $# != 1 ]; then
 	echo expected one argument: '<'dtrace-path'>'
 	exit 2
 fi
 
 dtrace=$1
 
 rupper &
 rupper=$!
 script
 status=$?
 
 kill $rupper
 exit $status
diff --git a/cddl/contrib/opensolaris/cmd/dtrace/test/tst/common/proc/tst.startexit.ksh b/cddl/contrib/opensolaris/cmd/dtrace/test/tst/common/proc/tst.startexit.ksh
index 429173806f35..76996bfcb413 100644
--- a/cddl/contrib/opensolaris/cmd/dtrace/test/tst/common/proc/tst.startexit.ksh
+++ b/cddl/contrib/opensolaris/cmd/dtrace/test/tst/common/proc/tst.startexit.ksh
@@ -1,89 +1,89 @@
 #
 # CDDL HEADER START
 #
 # The contents of this file are subject to the terms of the
 # Common Development and Distribution License (the "License").
 # You may not use this file except in compliance with the License.
 #
 # You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
 # or http://www.opensolaris.org/os/licensing.
 # See the License for the specific language governing permissions
 # and limitations under the License.
 #
 # When distributing Covered Code, include this CDDL HEADER in each
 # file and include the License file at usr/src/OPENSOLARIS.LICENSE.
 # If applicable, add the following below this CDDL HEADER, with the
 # fields enclosed by brackets "[]" replaced with your own identifying
 # information: Portions Copyright [yyyy] [name of copyright owner]
 #
 # CDDL HEADER END
 #
 
 #
 # Copyright 2007 Sun Microsystems, Inc.  All rights reserved.
 # Use is subject to license terms.
 #
 # ident	"%Z%%M%	%I%	%E% SMI"
 
 #
 # This script tests that the firing order of probes in a process is:
 # 
 #  1.  proc:::start
 #  2.  proc:::lwp-start
 #  3.  proc:::lwp-exit
 #  4.  proc:::exit
 #
 # If this fails, the script will run indefinitely; it relies on the harness
 # to time it out.
 #
 script()
 {
 	$dtrace -s /dev/stdin <<EOF
 	proc:::start
 	/curpsinfo->pr_ppid == $child/
 	{
 		self->start = 1;
 	}
 
 	proc:::lwp-start
 	/self->start/
 	{
 		self->lwp_start = 1;
 	}
 
 	proc:::lwp-exit
 	/self->lwp_start/
 	{
 		self->lwp_exit = 1;
 	}
 
 	proc:::exit
 	/self->lwp_exit == 1/
 	{
 		exit(0);
 	}
 EOF
 }
 
 sleeper()
 {
 	while true; do
-		/usr/bin/sleep 1
+		sleep 1
 	done
 }
 
 if [ $# != 1 ]; then
 	echo expected one argument: '<'dtrace-path'>'
 	exit 2
 fi
 
 dtrace=$1
 
 sleeper &
 child=$!
 
 script
 status=$?
 
 kill $child
 exit $status
diff --git a/cddl/contrib/opensolaris/cmd/dtrace/test/tst/i86xpv/xdt/tst.schedargs.ksh b/cddl/contrib/opensolaris/cmd/dtrace/test/tst/i86xpv/xdt/tst.schedargs.ksh
index 5b14fc989138..c74a278c1347 100755
--- a/cddl/contrib/opensolaris/cmd/dtrace/test/tst/i86xpv/xdt/tst.schedargs.ksh
+++ b/cddl/contrib/opensolaris/cmd/dtrace/test/tst/i86xpv/xdt/tst.schedargs.ksh
@@ -1,121 +1,121 @@
 #
 # CDDL HEADER START
 #
 # The contents of this file are subject to the terms of the
 # Common Development and Distribution License (the "License").
 # You may not use this file except in compliance with the License.
 #
 # You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
 # or http://www.opensolaris.org/os/licensing.
 # See the License for the specific language governing permissions
 # and limitations under the License.
 #
 # When distributing Covered Code, include this CDDL HEADER in each
 # file and include the License file at usr/src/OPENSOLARIS.LICENSE.
 # If applicable, add the following below this CDDL HEADER, with the
 # fields enclosed by brackets "[]" replaced with your own identifying
 # information: Portions Copyright [yyyy] [name of copyright owner]
 #
 # CDDL HEADER END
 #
 
 #
 # Copyright 2009 Sun Microsystems, Inc.  All rights reserved.
 # Use is subject to license terms.
 #
 
 #
 # ASSERTION: Sched probe arguments should be valid. 
 #
 
 if [ $# != 1 ]; then
 	echo expected one argument: '<'dtrace-path'>'
 	exit 2
 fi
 
 #
 # do not fail test in a domU
 #
 if [ ! -c /dev/xen/privcmd ]; then
 	exit 0
 fi
 
 dtrace=$1
 outf=/tmp/sched.args.$$
 
 script()
 {
-	$dtrace -c '/usr/bin/sleep 10' -o $outf -qs /dev/stdin <<EOF
+	$dtrace -c 'sleep 10' -o $outf -qs /dev/stdin <<EOF
 	xdt:sched::off-cpu,
 	xdt:sched::on-cpu,
 	xdt:sched::block,
 	xdt:sched::sleep,
 	xdt:sched::wake,
 	xdt:sched::yield
 	{
 		/* print domid vcpu pcpu probename */
 		printf("%d %d %d %s\n", arg0, arg1, \`xdt_curpcpu, probename);
 	}
 EOF
 }
 
 validate()
 {
 	/usr/bin/nawk '
 	BEGIN {
 		while (("/usr/sbin/xm vcpu-list" | getline)) {
 			if ($1 != "Name") {
 				domid = $2
 				vcpu = $3
 
 				vcpumap[domid, vcpu] = 1
 
 				split($7, affinity, ",")
 				for (i in affinity) {
 					if (split(affinity[i], p, "-") > 1) {
 						for (pcpu = p[1]; pcpu <= p[2];\
 						    pcpu++) {
 							cpumap[domid, vcpu,
 							    pcpu] = 1
 						}
 					} else {
 						cpumap[domid, vcpu,
 						    affinity[i]] = 1
 					}
 				}
 			}
 		}
 	}
 
 	/^$/ { next }
 
 	/wake/ {
 		if (vcpumap[$1, $2]) {
 			next
 		} else {
 			print "error: " $0
 			exit 1
 		}
 	}
 
 	{
 		if (cpumap[$1, $2, "any"] || cpumap[$1, $2, $3]) {
 			next
 		} else {
 			print "error: " $0
 			exit 1
 		}
 	}
 	' $outf
 }
 
 script
 status=$?
 
 if [ $status == 0 ]; then
 	validate
 	status=$?
 fi
 
 rm $outf
 exit $status