egrep -> grep -E

Reviewed-by: Brian Behlendorf <[email protected]>
Reviewed-by: John Kennedy <[email protected]>
Reviewed-by: Ryan Moeller <[email protected]>
Signed-off-by: Ahelenia Ziemiańska <[email protected]>
Closes #13259

17 files changed, 47 insertions, 74 deletions

diff --git a/tests/test-runner/include/logapi.shlib b/tests/test-runner/include/logapi.shlib
index 33423a7e3..59ac4c2c3 100644
--- a/tests/test-runner/include/logapi.shlib
+++ b/tests/test-runner/include/logapi.shlib
@@ -103,10 +103,7 @@ 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"
@@ -228,10 +225,7 @@ 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"
@@ -279,10 +273,7 @@ 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 f776caa3b..a97d1582d 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 $?
@@ -333,14 +328,14 @@ function on_off_disk # disk state{online,offline} host
 			dep="$(ls /sys/block/${dm_name}/slaves | awk '{print $1}')"
 			while [[ -n $dep ]]; do
 				#check if disk is online
-				if lsscsi | egrep -q $dep; then
+				if lsscsi | grep -qF $dep; then
 					dep_dir="/sys/block/${dm_name}"
 					dep_dir+="/slaves/${dep}/device"
 					ss="${dep_dir}/state"
 					sd="${dep_dir}/delete"
 					log_must eval "echo 'offline' > ${ss}"
 					log_must eval "echo '1' > ${sd}"
-					if lsscsi | egrep -q $dep; then
+					if lsscsi | grep -qF $dep; then
 						log_fail "Offlining $disk failed"
 					fi
 				fi
@@ -348,17 +343,14 @@ 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
@@ -369,13 +361,13 @@ function on_off_disk # disk state{online,offline} host
 			if is_mpath_device $disk; then
 				dm_name="$(readlink $DEV_DSKDIR/$disk | cut -d/ -f2)"
 				dep="$(ls /sys/block/$dm_name/slaves | awk '{print $1}')"
-				if lsscsi | egrep -q $dep; then
+				if lsscsi | grep -qF $dep; 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 $disk failed"
 						break
@@ -451,16 +443,14 @@ function load_scsi_debug # dev_size_mb add_host num_tgts max_luns blksz
 			log_unsupported "Platform does not have scsi_debug"
 			    "module"
 		fi
-		lsmod | egrep scsi_debug > /dev/null
-		if (($? == 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 a5ee92071..fcde48adc 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 58e992698..88390456a 100644
--- a/tests/zfs-tests/include/libtest.shlib
+++ b/tests/zfs-tests/include/libtest.shlib
@@ -2018,8 +2018,8 @@ function verify_pool
 #
 function get_disklist # pool
 {
-	zpool iostat -v $1 | awk '(NR > 4) {print $1}' | \
-	    egrep -v -e '^-----' -e "^(mirror|raidz[1-3]|draid[1-3]|spare|log|cache|special|dedup)|\-[0-9]$"
+	echo $(zpool iostat -v $1 | awk '(NR > 4) {print $1}' | \
+	    grep -vEe '^-----' -e "^(mirror|raidz[1-3]|draid[1-3]|spare|log|cache|special|dedup)|\-[0-9]$")
 }
 
 #
@@ -2182,7 +2182,7 @@ function check_pool_status # pool token keyword <verbose>
 	if [[ $verbose == true ]]; then
 		log_note $scan
 	fi
-	echo $scan | egrep -qi "$keyword"
+	echo $scan | grep -qi "$keyword"
 }
 
 #
diff --git a/tests/zfs-tests/tests/functional/acl/acl_common.kshlib b/tests/zfs-tests/tests/functional/acl/acl_common.kshlib
index bfae8ec72..1450f7b66 100644
--- a/tests/zfs-tests/tests/functional/acl/acl_common.kshlib
+++ b/tests/zfs-tests/tests/functional/acl/acl_common.kshlib
@@ -403,8 +403,7 @@ function get_xattr #<obj>
 		return 1
 	fi
 
-	for xattr in `runat $obj ls | \
-		grep -E -v -e SUNWattr_ro -e SUNWattr_rw` ; do
+	for xattr in $(runat $obj ls | grep -v 'SUNWattr_r[ow]'); do
 		runat $obj cksum $xattr
 	done
 }
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 14635b27f..d88217e5c 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
@@ -75,7 +75,7 @@ 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 bdcc18592..8764dd5a2 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
@@ -58,7 +58,7 @@ if ! ls -l $TESTDIR | grep "dir.0" | grep -q "drwx-wx---+"; 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 1b04a024f..bdd77bd37 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 '$ZFS_ACL_STAFF_GROUP' does not have 'rwx'"
diff --git a/tests/zfs-tests/tests/functional/cli_root/zdb/zdb_block_size_histogram.ksh b/tests/zfs-tests/tests/functional/cli_root/zdb/zdb_block_size_histogram.ksh
index 6ad93d87c..75f15f6a8 100755
--- a/tests/zfs-tests/tests/functional/cli_root/zdb/zdb_block_size_histogram.ksh
+++ b/tests/zfs-tests/tests/functional/cli_root/zdb/zdb_block_size_histogram.ksh
@@ -115,8 +115,7 @@ function histo_populate_test_pool
 			    of=/${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 945532903..e4664b52e 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 | awk 'END {print $1}')
+    grep -E "^ +-?([0-9]+ +){7}" | sort -n | awk 'END {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 ff46b0f2f..2c85e6e93 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 7fd6918b4..2580070e6 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_import/zpool_import.kshlib b/tests/zfs-tests/tests/functional/cli_root/zpool_import/zpool_import.kshlib
index 37f7acfbf..b91b496ee 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
@@ -180,7 +180,7 @@ 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 083b7e55a..5e40eee4b 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
@@ -76,7 +76,7 @@ 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 8e9009bd5..0f60113b7 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 03fc15a8a..36d30b51e 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 28b115fd7..6399c11ce 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
@@ -242,8 +242,8 @@ function get_vdevs #pool cnt
 	typeset pool=$1
 	typeset -i cnt=$2
 
-	typeset all_devs=$(zpool iostat -v $pool | awk '{print $1}'| \
-		egrep -ve "^pool$|^capacity$|^mirror\-[0-9]$|^raidz[1-3]\-[0-9]$|^draid[1-3].*\-[0-9]$|---" | \
+	typeset all_devs=$(zpool iostat -v $pool | awk '{print $1}' | \
+		grep -vEe "^pool$|^capacity$|^mirror\-[0-9]$|^raidz[1-3]\-[0-9]$|^draid[1-3].*\-[0-9]$|---" \
 		-e "/old$|^$pool$")
 	typeset -i i=0
 	typeset vdevs