Make bdmap changes POSIX-sh compliant

bdmap

@@ -15,15 +15,15 @@ OUTPUT="$(echo "${OUTPUT}" | sed 's|target[0-9:]\+/[0-9:]\+:\([0-9]\+\)|target\1
 # STRIP OFF BLOCKS
 OUTPUT="$(echo "${OUTPUT}" | sed 's|/block/.*||g')"
 
-# CONVERT -> TO A TAB
-OUTPUT="${OUTPUT// -> /	}"
+# CONVERT -> TO A SPACE
+OUTPUT="$(echo "${OUTPUT}" | sed 's/ -> / /g')"
 
 # SWAP COLUMNS
 OUTPUT="$(echo "${OUTPUT}" | awk '{t=$1; $1=$2; $2=t; print;}')"
 
 # NOW GET DEVICE IDs
 
-while read -r LOCATION BLOCKDEV; do
+echo "${OUTPUT}" | while read -r LOCATION BLOCKDEV; do
   DEVICE_ID="$(ls -l --color=never /dev/disk/by-id | sed 's/  \+/ /g' | grep -v 'nvme-eui\|wwn-' | grep "${BLOCKDEV}$" | cut -d\  -f9)"
   echo "${LOCATION}	${BLOCKDEV}	${DEVICE_ID}"
-done <<< "${OUTPUT}"
+done