diff --git a/config/kernel-global_page_state.m4 b/config/kernel-global_page_state.m4
index badb5e5d2e..76f2bba202 100644
--- a/config/kernel-global_page_state.m4
+++ b/config/kernel-global_page_state.m4
@@ -55,7 +55,7 @@ dnl #
 AC_DEFUN([ZFS_AC_KERNEL_ENUM_MEMBER], [
 	AC_MSG_CHECKING([whether enum $2 contains $1])
 	AS_IF([AC_TRY_COMMAND(
-	    "${srcdir}/scripts/enum-extract.pl" "$2" "$3" | egrep -qx $1)],[
+	    "${srcdir}/scripts/enum-extract.pl" "$2" "$3" | grep -Eqx $1)],[
 		AC_MSG_RESULT([yes])
 		AC_DEFINE(m4_join([_], [ZFS_ENUM], m4_toupper($2), $1), 1,
 		    [enum $2 contains $1])
diff --git a/tests/test-runner/include/logapi.shlib b/tests/test-runner/include/logapi.shlib
index 5a7e76c0dd..9363e2485b 100644
--- a/tests/test-runner/include/logapi.shlib
+++ b/tests/test-runner/include/logapi.shlib
@@ -96,10 +96,7 @@ function log_must_retry
 		out="cat $logfile"
 
 		if (( $status == 0 )); then
-			$out | egrep -i "internal error|assertion failed" \
-				> /dev/null 2>&1
-			# internal error or assertion failed
-			if [[ $? -eq 0 ]]; then
+			if $out | grep -qEi "internal error|assertion failed"; then
 				print -u2 $($out)
 				_printerror "$@" "internal error or" \
 					" assertion failure exited $status"
@@ -224,10 +221,7 @@ function log_neg_expect
 		print -u2 $($out)
 		_printerror "$@" "unexpectedly exited $status (SEGV)"
 	else
-		$out | egrep -i "internal error|assertion failed" \
-			> /dev/null 2>&1
-		# internal error or assertion failed
-		if (( $? == 0 )); then
+		if $out | grep -qEi "internal error|assertion failed"; then
 			print -u2 $($out)
 			_printerror "$@" "internal error or assertion failure" \
 				" exited $status"
@@ -275,10 +269,7 @@ function log_pos
 		print -u2 $($out)
 		_printerror "$@" "exited $status"
 	else
-		$out | egrep -i "internal error|assertion failed" \
-			> /dev/null 2>&1
-		# internal error or assertion failed
-		if [[ $? -eq 0 ]]; then
+		if $out | grep -qEi "internal error|assertion failed"; then
 			print -u2 $($out)
 			_printerror "$@" "internal error or assertion failure" \
 				" exited $status"
diff --git a/tests/zfs-tests/include/blkdev.shlib b/tests/zfs-tests/include/blkdev.shlib
index bf70952904..0ba52cfcf2 100644
--- a/tests/zfs-tests/include/blkdev.shlib
+++ b/tests/zfs-tests/include/blkdev.shlib
@@ -115,21 +115,18 @@ function is_physical_device #device
 
 	if is_linux; then
 		is_disk_device "$DEV_DSKDIR/$device" && \
-		[[ -f /sys/module/loop/parameters/max_part ]]
-		return $?
+		[ -f /sys/module/loop/parameters/max_part ]
 	elif is_freebsd; then
 		is_disk_device "$DEV_DSKDIR/$device" && \
-		echo $device | egrep -q \
+		echo $device | grep -qE \
 		    -e '^a?da[0-9]+$' \
 		    -e '^md[0-9]+$' \
 		    -e '^mfid[0-9]+$' \
 		    -e '^nda[0-9]+$' \
 		    -e '^nvd[0-9]+$' \
 		    -e '^vtbd[0-9]+$'
-		return $?
 	else
-		echo $device | egrep "^c[0-F]+([td][0-F]+)+$" > /dev/null 2>&1
-		return $?
+		echo $device | grep -qE "^c[0-F]+([td][0-F]+)+$"
 	fi
 }
 
@@ -143,8 +140,7 @@ function is_real_device #disk
 
 	if is_linux; then
 		lsblk $DEV_RDSKDIR/$disk -o TYPE 2>/dev/null | \
-		    egrep disk >/dev/null
-		return $?
+		    grep -q disk
 	fi
 }
 
@@ -158,8 +154,7 @@ function is_loop_device #disk
 
 	if is_linux; then
 		lsblk $DEV_RDSKDIR/$disk -o TYPE 2>/dev/null | \
-		    egrep loop >/dev/null
-		return $?
+		    grep -q loop
 	fi
 }
 
@@ -182,7 +177,7 @@ function is_mpath_device #disk
 
 	if is_linux; then
 		lsblk $DEV_MPATHDIR/$disk -o TYPE 2>/dev/null | \
-		   egrep mpath >/dev/null
+		   grep -q mpath
 		if (($? == 0)); then
 			readlink $DEV_MPATHDIR/$disk > /dev/null 2>&1
 			return $?
@@ -301,12 +296,12 @@ function get_persistent_disk_name #device
 	if is_linux; then
 		if is_real_device $device; then
 			dev_id="$(udevadm info -q all -n $DEV_DSKDIR/$device \
-			    | egrep disk/by-id | nawk '{print $2; exit}' \
+			    | grep -E "disk/by-id" | nawk '{print $2; exit}' \
 			    | nawk -F / '{print $3}')"
 			echo $dev_id
 		elif is_mpath_device $device; then
 			dev_id="$(udevadm info -q all -n $DEV_DSKDIR/$device \
-			    | egrep disk/by-id/dm-uuid \
+			    | grep -E "disk/by-id/dm-uuid" \
 			    | nawk '{print $2; exit}' \
 			    | nawk -F / '{print $3}')"
 			echo $dev_id
@@ -342,7 +337,7 @@ function on_off_disk # disk state{online,offline} host
 			    | nawk '{print $1}')"
 			while [[ -n $dep ]]; do
 				#check if disk is online
-				lsscsi | egrep $dep > /dev/null
+				lsscsi | grep -qF $dep
 				if (($? == 0)); then
 					dep_dir="/sys/block/${dm_name}"
 					dep_dir+="/slaves/${dep}/device"
@@ -350,7 +345,7 @@ function on_off_disk # disk state{online,offline} host
 					sd="${dep_dir}/delete"
 					log_must eval "echo 'offline' > ${ss}"
 					log_must eval "echo '1' > ${sd}"
-					lsscsi | egrep $dep > /dev/null
+					lsscsi | grep -qF $dep
 						if (($? == 0)); then
 							log_fail "Offlining" \
 							    "$disk failed"
@@ -361,17 +356,14 @@ function on_off_disk # disk state{online,offline} host
 			done
 		elif [[ $state == "offline" ]] && ( is_real_device $disk ); then
 			#check if disk is online
-			lsscsi | egrep $disk > /dev/null
-			if (($? == 0)); then
+			if lsscsi | grep -qF $disk; then
 				dev_state="/sys/block/$disk/device/state"
 				dev_delete="/sys/block/$disk/device/delete"
 				log_must eval "echo 'offline' > ${dev_state}"
 				log_must eval "echo '1' > ${dev_delete}"
-				lsscsi | egrep $disk > /dev/null
-					if (($? == 0)); then
-						log_fail "Offlining $disk" \
-						    "failed"
-					fi
+				if lsscsi | grep -qF $disk; then
+					log_fail "Offlining $disk failed"
+				fi
 			else
 				log_note "$disk is already offline"
 			fi
@@ -384,14 +376,14 @@ function on_off_disk # disk state{online,offline} host
 				    | nawk -F / '{print $2}')"
 				dep="$(ls /sys/block/$dm_name/slaves \
 				    | nawk '{print $1}')"
-				lsscsi | egrep $dep > /dev/null
+				lsscsi | grep -qF $dep
 				if (($? != 0)); then
 					log_fail "Onlining $disk failed"
 				fi
 			elif is_real_device $disk; then
 				block_device_wait
 				typeset -i retries=0
-				while ! lsscsi | egrep -q $disk; do
+				while ! lsscsi | grep -qF $disk; do
 					if (( $retries > 2 )); then
 						log_fail "Onlining $disk failed"
 						break
@@ -467,16 +459,14 @@ function load_scsi_debug # dev_size_mb add_host num_tgts max_luns blksz
 			log_unsupported "Platform does not have scsi_debug"
 			    "module"
 		fi
-		lsmod | egrep scsi_debug > /dev/null
-		if (($? == 0)); then
+		if lsmod | grep -q scsi_debug; then
 			log_fail "scsi_debug module already installed"
 		else
 			log_must modprobe scsi_debug dev_size_mb=$devsize \
 			    add_host=$hosts num_tgts=$tgts max_luns=$luns \
 			    sector_size=$sector physblk_exp=$blkexp
 			block_device_wait
-			lsscsi | egrep scsi_debug > /dev/null
-			if (($? == 1)); then
+			if ! lsscsi | grep -q scsi_debug; then
 				log_fail "scsi_debug module install failed"
 			fi
 		fi
diff --git a/tests/zfs-tests/include/commands.cfg b/tests/zfs-tests/include/commands.cfg
index 4497a6248b..a565ea8d51 100644
--- a/tests/zfs-tests/include/commands.cfg
+++ b/tests/zfs-tests/include/commands.cfg
@@ -32,7 +32,6 @@ export SYSTEM_FILES_COMMON='arp
     dmesg
     du
     echo
-    egrep
     env
     expr
     false
diff --git a/tests/zfs-tests/include/libtest.shlib b/tests/zfs-tests/include/libtest.shlib
index 94ab7ffd20..079272811f 100644
--- a/tests/zfs-tests/include/libtest.shlib
+++ b/tests/zfs-tests/include/libtest.shlib
@@ -2143,7 +2143,7 @@ function get_disklist # pool
 
 	disklist=$(zpool iostat -v $1 | nawk '(NR >4) {print $1}' | \
 	    grep -v "\-\-\-\-\-" | \
-	    egrep -v -e "^(mirror|raidz[1-3]|draid[1-3]|spare|log|cache|special|dedup)|\-[0-9]$")
+	    grep -vEe "^(mirror|raidz[1-3]|draid[1-3]|spare|log|cache|special|dedup)|\-[0-9]$")
 
 	echo $disklist
 }
@@ -2315,8 +2315,7 @@ function check_pool_status # pool token keyword <verbose>
 	if [[ $verbose == true ]]; then
 		log_note $scan
 	fi
-	echo $scan | egrep -i "$keyword" > /dev/null 2>&1
-
+	echo $scan | grep -qi "$keyword"
 	return $?
 }
 
diff --git a/tests/zfs-tests/tests/functional/acl/posix/posix_001_pos.ksh b/tests/zfs-tests/tests/functional/acl/posix/posix_001_pos.ksh
index d62bf9c346..69ef0a707d 100755
--- a/tests/zfs-tests/tests/functional/acl/posix/posix_001_pos.ksh
+++ b/tests/zfs-tests/tests/functional/acl/posix/posix_001_pos.ksh
@@ -57,7 +57,7 @@ log_onexit cleanup
 log_note "Testing access to FILE"
 log_must touch $TESTDIR/file.0
 log_must setfacl -m g:$ZFS_ACL_STAFF_GROUP:rw $TESTDIR/file.0
-getfacl $TESTDIR/file.0 2> /dev/null | egrep -q \
+getfacl $TESTDIR/file.0 2> /dev/null | grep -q \
     "^group:$ZFS_ACL_STAFF_GROUP:rw-$"
 if [ "$?" -eq "0" ]; then
 	# Should be able to write to file
@@ -76,7 +76,7 @@ if [ "$?" -eq "0" ]; then
 		log_note "expected mask drwxrw----+ but found $msk"
 		log_fail "Expected permissions were not set."
 	fi
-	getfacl $TESTDIR/dir.0 2> /dev/null | egrep -q \
+	getfacl $TESTDIR/dir.0 2> /dev/null | grep -q \
 	    "^group:$ZFS_ACL_STAFF_GROUP:rw-$"
 	if [ "$?" -ne "0" ]; then
 		acl=$(getfacl $TESTDIR/dir.0 2> /dev/null)
diff --git a/tests/zfs-tests/tests/functional/acl/posix/posix_002_pos.ksh b/tests/zfs-tests/tests/functional/acl/posix/posix_002_pos.ksh
index d9b5036458..d8424a01ef 100755
--- a/tests/zfs-tests/tests/functional/acl/posix/posix_002_pos.ksh
+++ b/tests/zfs-tests/tests/functional/acl/posix/posix_002_pos.ksh
@@ -59,7 +59,7 @@ if [ "$?" -ne "0" ]; then
 	log_note "expected mask drwx-wx---+ but found $msk"
 	log_fail "Expected permissions were not set."
 fi
-getfacl $TESTDIR/dir.0 2> /dev/null | egrep -q \
+getfacl $TESTDIR/dir.0 2> /dev/null | grep -q \
     "^group:$ZFS_ACL_STAFF_GROUP:-wx$"
 if [ "$?" -eq "0" ]; then
 	# Should be able to create file in directory
diff --git a/tests/zfs-tests/tests/functional/acl/posix/posix_003_pos.ksh b/tests/zfs-tests/tests/functional/acl/posix/posix_003_pos.ksh
index 1b04a024f2..bdd77bd376 100755
--- a/tests/zfs-tests/tests/functional/acl/posix/posix_003_pos.ksh
+++ b/tests/zfs-tests/tests/functional/acl/posix/posix_003_pos.ksh
@@ -43,16 +43,14 @@ log_note "Testing access to DIRECTORY"
 log_must mkdir $ACLDIR
 log_must setfacl -m g:$ZFS_ACL_STAFF_GROUP:wx $ACLDIR
 log_must setfacl -d -m g:$ZFS_ACL_STAFF_GROUP:wx $ACLDIR
-getfacl $ACLDIR 2> /dev/null | egrep -q "$acl_str1"
-if [ "$?" -eq "0" ]; then
-	getfacl $ACLDIR 2> /dev/null | egrep -q "$acl_str2"
-fi
 
-if [ "$?" -eq "0" ]; then
+if getfacl $ACLDIR 2> /dev/null | grep -q "$acl_str1" &&
+	getfacl $ACLDIR 2> /dev/null | grep -q "$acl_str2"
+then
 	log_must zfs unmount $TESTPOOL/$TESTFS
 	log_must zfs mount $TESTPOOL/$TESTFS
-	log_must eval "getfacl $ACLDIR 2> /dev/null | egrep -q \"$acl_str1\""
-	log_must eval "getfacl $ACLDIR 2> /dev/null | egrep -q \"$acl_str2\""
+	log_must eval "getfacl $ACLDIR 2> /dev/null | grep -q \"$acl_str1\""
+	log_must eval "getfacl $ACLDIR 2> /dev/null | grep -q \"$acl_str2\""
 	log_pass "POSIX ACLs survive remount"
 else
 	log_fail "Group '$ZFS_ACL_STAFF_GROUP' does not have 'rwx'"
diff --git a/tests/zfs-tests/tests/functional/alloc_class/alloc_class_004_pos.ksh b/tests/zfs-tests/tests/functional/alloc_class/alloc_class_004_pos.ksh
index 79ac9364c2..2aeae651ec 100755
--- a/tests/zfs-tests/tests/functional/alloc_class/alloc_class_004_pos.ksh
+++ b/tests/zfs-tests/tests/functional/alloc_class/alloc_class_004_pos.ksh
@@ -53,7 +53,7 @@ do
 	    special $stype $sdisks
 
 	ac_value="$(zpool get -H -o property,value all | \
-	    egrep allocation_classes | nawk '{print $2}')"
+	    grep allocation_classes | nawk '{print $2}')"
 	if [ "$ac_value" = "active" ]; then
 		log_note "feature@allocation_classes is active"
 	else
diff --git a/tests/zfs-tests/tests/functional/alloc_class/alloc_class_005_pos.ksh b/tests/zfs-tests/tests/functional/alloc_class/alloc_class_005_pos.ksh
index 337114cdb5..eeb86b5255 100755
--- a/tests/zfs-tests/tests/functional/alloc_class/alloc_class_005_pos.ksh
+++ b/tests/zfs-tests/tests/functional/alloc_class/alloc_class_005_pos.ksh
@@ -42,7 +42,7 @@ do
 		log_must zpool create $TESTPOOL $type $ZPOOL_DISKS
 	fi
 	ac_value="$(zpool get -H -o property,value all | \
-	    egrep allocation_classes  | awk '{print $2}')"
+	    grep allocation_classes  | awk '{print $2}')"
 	if [ "$ac_value" = "enabled" ]; then
 		log_note "feature@allocation_classes is enabled"
 	else
@@ -57,7 +57,7 @@ do
 		    $CLASS_DISK0 $CLASS_DISK1
 	fi
 	ac_value="$(zpool get -H -o property,value all | \
-	    egrep allocation_classes | awk '{print $2}')"
+	    grep allocation_classes | awk '{print $2}')"
 	if [ "$ac_value" = "active" ]; then
 		log_note "feature@allocation_classes is active"
 	else
diff --git a/tests/zfs-tests/tests/functional/cli_root/zdb/zdb_block_size_histogram.ksh b/tests/zfs-tests/tests/functional/cli_root/zdb/zdb_block_size_histogram.ksh
index 8d677affb9..ce439e2056 100755
--- a/tests/zfs-tests/tests/functional/cli_root/zdb/zdb_block_size_histogram.ksh
+++ b/tests/zfs-tests/tests/functional/cli_root/zdb/zdb_block_size_histogram.ksh
@@ -115,8 +115,7 @@ function histo_populate_test_pool
 			    of=/${pool}/B_${this_rs}/file_${filenum} \
 			    bs=${this_rs} count=${thiscount} \
 			    iflag=fullblock 2>&1 | \
-			    egrep -v -e "records in" -e "records out" \
-				-e "bytes.*copied"
+			    grep -ve "records in" -e "records out" -e "bytes.*copied"
 			((filenum+=1))
 		done
 	done
diff --git a/tests/zfs-tests/tests/functional/cli_root/zdb/zdb_object_range_neg.ksh b/tests/zfs-tests/tests/functional/cli_root/zdb/zdb_object_range_neg.ksh
index 4301807880..ae086dad53 100755
--- a/tests/zfs-tests/tests/functional/cli_root/zdb/zdb_object_range_neg.ksh
+++ b/tests/zfs-tests/tests/functional/cli_root/zdb/zdb_object_range_neg.ksh
@@ -65,7 +65,7 @@ done
 
 # Specifying a non-existent object identifier returns an error
 obj_id_highest=$(zdb -P -dd $TESTPOOL/$TESTFS 2>/dev/null |
-    egrep "^ +-?([0-9]+ +){7}" | sort -n | tail -n 1 | awk '{print $1}')
+    grep -E "^ +-?([0-9]+ +){7}" | sort -n | tail -n 1 | awk '{print $1}')
 obj_id_invalid=$(( $obj_id_highest + 1 ))
 log_mustnot zdb -dd $TESTPOOL/$TESTFS $obj_id_invalid
 
diff --git a/tests/zfs-tests/tests/functional/cli_root/zdb/zdb_object_range_pos.ksh b/tests/zfs-tests/tests/functional/cli_root/zdb/zdb_object_range_pos.ksh
index b7f47d11ad..386c5750c3 100755
--- a/tests/zfs-tests/tests/functional/cli_root/zdb/zdb_object_range_pos.ksh
+++ b/tests/zfs-tests/tests/functional/cli_root/zdb/zdb_object_range_pos.ksh
@@ -60,8 +60,7 @@ function get_object_list_range
 function get_object_list
 {
 	zdb -P -dd $@ 2>/dev/null |
-	egrep "^ +-?([0-9]+ +){7}" |
-	sed 's/^[[:space:]]*//' |
+	sed -E '/^ +-?([0-9]+ +){7}/!d;s/^[[:space:]]*//' |
 	sort -n
 }
 
diff --git a/tests/zfs-tests/tests/functional/cli_root/zfs_get/zfs_get_009_pos.ksh b/tests/zfs-tests/tests/functional/cli_root/zfs_get/zfs_get_009_pos.ksh
index 7fd6918b43..2580070e67 100755
--- a/tests/zfs-tests/tests/functional/cli_root/zfs_get/zfs_get_009_pos.ksh
+++ b/tests/zfs-tests/tests/functional/cli_root/zfs_get/zfs_get_009_pos.ksh
@@ -39,7 +39,7 @@
 # STRATEGY:
 #	1. Create a multiple depth filesystem.
 #	2. 'zfs get -d <n>' to get the output.
-#	3. 'zfs get -r|egrep' to get the expected output.
+#	3. 'zfs get -r|grep' to get the expected output.
 #	4. Compare the two outputs, they should be same.
 #
 
@@ -86,7 +86,7 @@ for dp in ${depth_array[@]}; do
 	done
 	for prop in $(gen_option_str "${all_props[*]}" "" "," $prop_numb); do
 		log_must eval "zfs get -H -d $dp -o name $prop $DEPTH_FS > $DEPTH_OUTPUT"
-		log_must eval "zfs get -rH -o name $prop $DEPTH_FS | egrep -e '$eg_opt' > $EXPECT_OUTPUT"
+		log_must eval "zfs get -rH -o name $prop $DEPTH_FS | grep -E '$eg_opt' > $EXPECT_OUTPUT"
 		log_must diff $DEPTH_OUTPUT $EXPECT_OUTPUT
 	done
 	(( old_val=dp ))
diff --git a/tests/zfs-tests/tests/functional/cli_root/zpool_create/zpool_create_005_pos.ksh b/tests/zfs-tests/tests/functional/cli_root/zpool_create/zpool_create_005_pos.ksh
index e1d8cc4745..a291e29d0a 100755
--- a/tests/zfs-tests/tests/functional/cli_root/zpool_create/zpool_create_005_pos.ksh
+++ b/tests/zfs-tests/tests/functional/cli_root/zpool_create/zpool_create_005_pos.ksh
@@ -90,7 +90,7 @@ do
 			$file.1 $file.2 $file.3 $file.4
 		! poolexists $TESTPOOL && \
 			log_fail "Creating pool with $opt fails."
-		mpt=`zfs mount | egrep "^$TESTPOOL[^/]" | awk '{print $2}'`
+		mpt=`zfs mount | grep -E "^$TESTPOOL[^/]" | awk '{print $2}'`
 		(( ${#mpt} == 0 )) && \
 			log_fail "$TESTPOOL created with $opt is not mounted."
 		mpt_val=$(get_prop "mountpoint" $TESTPOOL)
diff --git a/tests/zfs-tests/tests/functional/cli_root/zpool_import/zpool_import.kshlib b/tests/zfs-tests/tests/functional/cli_root/zpool_import/zpool_import.kshlib
index 8bbd668a93..d79e33fa97 100644
--- a/tests/zfs-tests/tests/functional/cli_root/zpool_import/zpool_import.kshlib
+++ b/tests/zfs-tests/tests/functional/cli_root/zpool_import/zpool_import.kshlib
@@ -181,7 +181,7 @@ function _translate_vdev
 	#
 	typeset keywords="mirror replacing raidz1 raidz2 raidz3 indirect draid1 draid2 draid3"
 	for word in $keywords; do
-		echo $vdev | egrep -qE \
+		echo $vdev | grep -qE \
 		    "^${word}-[0-9]+\$|^${word}:[0-9]+d:[0-9]c:[0-9]+s-[0-9]+\$"
 		if [[ $? -eq 0 ]]; then
 			vdev=$word
diff --git a/tests/zfs-tests/tests/functional/cli_root/zpool_initialize/zpool_initialize_verify_initialized.ksh b/tests/zfs-tests/tests/functional/cli_root/zpool_initialize/zpool_initialize_verify_initialized.ksh
index f774970a71..27a32d5a5f 100755
--- a/tests/zfs-tests/tests/functional/cli_root/zpool_initialize/zpool_initialize_verify_initialized.ksh
+++ b/tests/zfs-tests/tests/functional/cli_root/zpool_initialize/zpool_initialize_verify_initialized.ksh
@@ -79,7 +79,7 @@ while read -r offset_size; do
 	# Note we use '-t x4' instead of '-t x8' here because x8 is not
 	# a supported format on FreeBSD.
 	dd if=$SMALLFILE skip=$((offset / bs)) count=$((size / bs)) bs=$bs |
-	    od -t x4 -Ad | egrep -q "deadbeef +deadbeef +deadbeef +deadbeef" ||
+	    od -t x4 -Ad | grep -qE "deadbeef +deadbeef +deadbeef +deadbeef" ||
 	    log_fail "Pattern not found in metaslab free space"
 done
 
diff --git a/tests/zfs-tests/tests/functional/cli_user/zfs_list/zfs_list_007_pos.ksh b/tests/zfs-tests/tests/functional/cli_user/zfs_list/zfs_list_007_pos.ksh
index 8e9009bd55..0f60113b76 100755
--- a/tests/zfs-tests/tests/functional/cli_user/zfs_list/zfs_list_007_pos.ksh
+++ b/tests/zfs-tests/tests/functional/cli_user/zfs_list/zfs_list_007_pos.ksh
@@ -37,7 +37,7 @@
 #
 # STRATEGY:
 #	1. 'zfs list -d <n>' to get the output.
-#	2. 'zfs list -r|egrep' to get the expected output.
+#	2. 'zfs list -r|grep' to get the expected output.
 #	3. Compare the two outputs, they should be same.
 #
 
@@ -50,8 +50,7 @@ fi
 
 function cleanup
 {
-	log_must rm -f $DEPTH_OUTPUT
-	log_must rm -f $EXPECT_OUTPUT
+	log_must rm -f $DEPTH_OUTPUT $EXPECT_OUTPUT
 }
 
 log_onexit cleanup
@@ -76,10 +75,10 @@ for dp in ${depth_array[@]}; do
 			log_must eval "zfs list -H -d $dp -o name -t ${fs_type[$fs]} $DEPTH_FS > $DEPTH_OUTPUT"
 			[[ -s "$DEPTH_OUTPUT" ]] && \
 				log_fail "$DEPTH_OUTPUT should be null."
-			log_mustnot zfs list -rH -o name -t ${fs_type[$fs]} $DEPTH_FS | egrep -e '$eg_opt'
+			log_mustnot zfs list -rH -o name -t ${fs_type[$fs]} $DEPTH_FS | grep -E "$eg_opt"
 		else
 			log_must eval "zfs list -H -d $dp -o name -t ${fs_type[$fs]} $DEPTH_FS > $DEPTH_OUTPUT"
-			log_must eval "zfs list -rH -o name -t ${fs_type[$fs]} $DEPTH_FS | egrep -e '$eg_opt' > $EXPECT_OUTPUT"
+			log_must eval "zfs list -rH -o name -t ${fs_type[$fs]} $DEPTH_FS | grep -E '$eg_opt' > $EXPECT_OUTPUT"
 			log_must diff $DEPTH_OUTPUT $EXPECT_OUTPUT
 		fi
 		(( fs+=1 ))
diff --git a/tests/zfs-tests/tests/functional/fault/auto_online_001_pos.ksh b/tests/zfs-tests/tests/functional/fault/auto_online_001_pos.ksh
index 03fc15a8a7..36d30b51e2 100755
--- a/tests/zfs-tests/tests/functional/fault/auto_online_001_pos.ksh
+++ b/tests/zfs-tests/tests/functional/fault/auto_online_001_pos.ksh
@@ -134,9 +134,8 @@ do
 		((timeout++))
 
 		sleep 1
-		zpool events $TESTPOOL \
-		    | egrep sysevent.fs.zfs.resilver_finish > /dev/null
-		if (($? == 0)); then
+		if zpool events $TESTPOOL \
+		    | grep -qF sysevent.fs.zfs.resilver_finish; then
 			log_note "Auto-online of $offline_disk is complete"
 			sleep 1
 			break
diff --git a/tests/zfs-tests/tests/functional/redundancy/redundancy.kshlib b/tests/zfs-tests/tests/functional/redundancy/redundancy.kshlib
index 9888034667..c9c9747e39 100644
--- a/tests/zfs-tests/tests/functional/redundancy/redundancy.kshlib
+++ b/tests/zfs-tests/tests/functional/redundancy/redundancy.kshlib
@@ -221,7 +221,7 @@ function is_data_valid
 	log_must zpool scrub -w $pool
 
 	record_data $pool $PST_RECORD_FILE
-	if ! diff $PRE_RECORD_FILE $PST_RECORD_FILE > /dev/null 2>&1; then
+	if ! cmp $PRE_RECORD_FILE $PST_RECORD_FILE > /dev/null; then
 		log_must cat $PRE_RECORD_FILE
 		log_must cat $PST_RECORD_FILE
 		diff -u $PRE_RECORD_FILE $PST_RECORD_FILE
@@ -243,8 +243,8 @@ function get_vdevs #pool cnt
 	typeset -i cnt=$2
 
 	typeset all_devs=$(zpool iostat -v $pool | awk '{print $1}'| \
-		egrep -v "^pool$|^capacity$|^mirror\-[0-9]$|^raidz[1-3]\-[0-9]$|^draid[1-3].*\-[0-9]$|---" | \
-		egrep -v "/old$|^$pool$")
+		grep -vEe "^pool$|^capacity$|^mirror\-[0-9]$|^raidz[1-3]\-[0-9]$|^draid[1-3].*\-[0-9]$|---" | \
+		grep -vEe "/old$|^$pool$")
 	typeset -i i=0
 	typeset vdevs
 	while ((i < cnt)); do
diff --git a/tests/zfs-tests/tests/functional/replacement/rebuild_disabled_feature.ksh b/tests/zfs-tests/tests/functional/replacement/rebuild_disabled_feature.ksh
index d17d83b783..334f430c24 100755
--- a/tests/zfs-tests/tests/functional/replacement/rebuild_disabled_feature.ksh
+++ b/tests/zfs-tests/tests/functional/replacement/rebuild_disabled_feature.ksh
@@ -46,7 +46,7 @@ function check_feature_flag
 	expected_value=$3
 
 	value="$(zpool get -H -o property,value all $pool | \
-	    egrep "$feature" | awk '{print $2}')"
+	    grep -E "$feature" | awk '{print $2}')"
 	if [ "$value" = "$expected_value" ]; then
 		log_note "$feature verified to be $value"
 	else
diff --git a/tests/zfs-tests/tests/functional/rsend/rsend.kshlib b/tests/zfs-tests/tests/functional/rsend/rsend.kshlib
index 516d412632..533ca208a6 100644
--- a/tests/zfs-tests/tests/functional/rsend/rsend.kshlib
+++ b/tests/zfs-tests/tests/functional/rsend/rsend.kshlib
@@ -367,7 +367,7 @@ function fs_inherit_prop
 	else
 		fs_prop=$(zfs inherit 2>&1 | \
 		    awk '$2=="YES" && $3=="YES" {print $1}'|
-		    egrep -v "devices|mlslabel|sharenfs|sharesmb|zoned")
+		    grep -E -v "devices|mlslabel|sharenfs|sharesmb|zoned")
 	fi
 
 	echo $fs_prop
diff --git a/tests/zfs-tests/tests/functional/rsend/rsend_012_pos.ksh b/tests/zfs-tests/tests/functional/rsend/rsend_012_pos.ksh
index 594357dc4b..3f12e054d8 100755
--- a/tests/zfs-tests/tests/functional/rsend/rsend_012_pos.ksh
+++ b/tests/zfs-tests/tests/functional/rsend/rsend_012_pos.ksh
@@ -52,7 +52,7 @@ function edited_prop
 		"get")
 			typeset props=$(zfs inherit 2>&1 | \
 				awk '$2=="YES" {print $1}' | \
-				egrep -v "^vol|\.\.\.$")
+				grep -E -v "^vol|\.\.\.$")
 			for item in $props ; do
 				if [[ $item == "mlslabel" ]] && \
 					! is_te_enabled ; then
diff --git a/tests/zfs-tests/tests/functional/vdev_zaps/vdev_zaps.kshlib b/tests/zfs-tests/tests/functional/vdev_zaps/vdev_zaps.kshlib
index aae2ab40ce..41ba54a07c 100644
--- a/tests/zfs-tests/tests/functional/vdev_zaps/vdev_zaps.kshlib
+++ b/tests/zfs-tests/tests/functional/vdev_zaps/vdev_zaps.kshlib
@@ -43,14 +43,14 @@ function get_conf_section # regex conf
 function get_leaf_vd_zap # dsk conf
 {
         typeset section=$(get_conf_section "$1" "$2")
-        echo "$section" | egrep \
+        echo "$section" | grep -E \
                 "com.delphix:vdev_zap_leaf: [0-9]+" | awk '{print $2}'
 }
 
 function get_top_vd_zap # dsk conf
 {
         typeset section=$(get_conf_section "$1" "$2")
-        echo "$section" | egrep \
+        echo "$section" | grep -E \
                 "com.delphix:vdev_zap_top: [0-9]+" | awk '{print $2}'
 }