Remove basename(1). Clean up/shorten some coreutils pipelines

Basenames that remain, in cmd/zed/zed.d/statechange-led.sh:
	dev=$(basename "$(echo "$therest" | awk '{print $(NF-1)}')")
	vdev=$(basename "$ZEVENT_VDEV_PATH")
I don't wanna interfere with #11988

scripts/zfs-tests.sh:
	SINGLETESTFILE=$(basename "$SINGLETEST")
tests/zfs-tests/tests/functional/cli_user/zfs_list/zfs_list.kshlib:
	ACTUAL=$(basename $dataset)
	ACTUAL=$(basename $dataset)
tests/zfs-tests/tests/functional/cli_user/zpool_iostat/
	zpool_iostat_-c_homedir.ksh:
	typeset USER_SCRIPT=$(basename "$USER_SCRIPT_FULL")
tests/zfs-tests/tests/functional/cli_user/zpool_iostat/
	zpool_iostat_-c_searchpath.ksh:
	typeset CMD_1=$(basename "$SCRIPT_1")
	typeset CMD_2=$(basename "$SCRIPT_2")
tests/zfs-tests/tests/functional/cli_user/zpool_status/
	zpool_status_-c_homedir.ksh:
	typeset USER_SCRIPT=$(basename "$USER_SCRIPT_FULL")
tests/zfs-tests/tests/functional/cli_user/zpool_status/
	zpool_status_-c_searchpath.ksh
	typeset CMD_1=$(basename "$SCRIPT_1")
	typeset CMD_2=$(basename "$SCRIPT_2")
tests/zfs-tests/tests/functional/migration/migration.cfg:
	export BNAME=`basename $TESTFILE`
tests/zfs-tests/tests/perf/perf.shlib:
	typeset logbase="$(get_perf_output_dir)/$(basename \
tests/zfs-tests/tests/perf/perf.shlib:
	typeset logbase="$(get_perf_output_dir)/$(basename \

These are potentially Of Directories, where basename is actually
useful

Reviewed-by: Brian Behlendorf <[email protected]>
Reviewed-by: John Kennedy <[email protected]>
Signed-off-by: Ahelenia Ziemiańska <[email protected]>
Closes #12652

2 files changed, 7 insertions, 10 deletions

diff --git a/etc/init.d/zfs-import.in b/etc/init.d/zfs-import.in
index e4bc7b833..130174f74 100755
--- a/etc/init.d/zfs-import.in
+++ b/etc/init.d/zfs-import.in
@@ -57,8 +57,7 @@ find_pools()
 	local pools
 
 	pools=$("$@" 2> /dev/null | \
-		grep -E "pool:|^[a-zA-Z0-9]" | \
-		sed 's@.*: @@' | \
+		sed -Ee '/pool:|^[a-zA-Z0-9]/!d' -e 's@.*: @@' | \
 		sort | \
 		tr '\n' ';')
 
diff --git a/etc/zfs/zfs-functions.in b/etc/zfs/zfs-functions.in
index 2fb065afd..a27d4c6cb 100644
--- a/etc/zfs/zfs-functions.in
+++ b/etc/zfs/zfs-functions.in
@@ -345,7 +345,7 @@ read_mtab()
 
 	# Unset all MTAB_* variables
 	# shellcheck disable=SC2046
-	unset $(env | grep ^MTAB_ | sed 's,=.*,,')
+	unset $(env | sed -e '/^MTAB_/!d' -e 's,=.*,,')
 
 	while read -r fs mntpnt fstype opts rest; do
 		if echo "$fs $mntpnt $fstype $opts" | grep -qE "$match"; then
@@ -360,9 +360,8 @@ read_mtab()
 			fs=$(/bin/echo "$fs" | sed 's,\\0,\\00,')
 
 			# Remove 'unwanted' characters.
-			mntpnt=$(printf '%b\n' "$mntpnt" | sed -e 's,/,,g' \
-			    -e 's,-,,g' -e 's,\.,,g' -e 's, ,,g')
-			fs=$(printf '%b\n' "$fs")
+			mntpnt=$(printf '%b' "$mntpnt" | tr -d '/. -')
+			fs=$(printf '%b' "$fs")
 
 			# Set the variable.
 			eval export "MTAB_$mntpnt=\"$fs\""
@@ -374,8 +373,7 @@ in_mtab()
 {
 	local mntpnt="$1"
 	# Remove 'unwanted' characters.
-	mntpnt=$(printf '%b\n' "$mntpnt" | sed -e 's,/,,g' \
-	    -e 's,-,,g' -e 's,\.,,g' -e 's, ,,g')
+	mntpnt=$(printf '%b' "$mntpnt" | tr -d '/. -')
 	local var
 
 	var="$(eval echo "MTAB_$mntpnt")"
@@ -391,7 +389,7 @@ read_fstab()
 
 	# Unset all FSTAB_* variables
 	# shellcheck disable=SC2046
-	unset $(env | grep ^FSTAB_ | sed 's,=.*,,')
+	unset $(env | sed -e '/^FSTAB_/!d' -e 's,=.*,,')
 
 	i=0
 	while read -r fs mntpnt fstype opts; do
@@ -401,7 +399,7 @@ read_fstab()
 
 		if echo "$fs $mntpnt $fstype $opts" | grep -qE "$match"; then
 			eval export "FSTAB_dev_$i=$fs"
-			fs=$(printf '%b\n' "$fs" | sed 's,/,_,g')
+			fs=$(printf '%b' "$fs" | tr '/' '_')
 			eval export "FSTAB_$i=$mntpnt"
 
 			i=$((i + 1))