Use column instead of printf for dynamic column widths

bdmap

@@ -1,29 +1,29 @@
 #!/bin/sh
 
 # GET THE INITITAL OUTPUT OF `ls /sys/block`
-OUTPUT="$(ls -l --color=never /sys/block | grep -v virtual | grep devices | cut -d\  -f9-)"
+BLK_INFO="$(ls -l --color=never /sys/block | grep -v virtual | grep devices | cut -d\  -f9-)"
 
 # STRIP OFF THE PCI BUS LOCATION INFORMATION
-OUTPUT="$(echo "${OUTPUT}" | sed 's|\.\.\/devices/pci[0-9a-f:]\{7\}\(/[0-9a-f:.]\{12\}\)\+/||g')"
+BLK_INFO="$(echo "${BLK_INFO}" | sed 's|\.\.\/devices/pci[0-9a-f:]\{7\}\(/[0-9a-f:.]\{12\}\)\+/||g')"
 
 #STRIP OFF THE SUPERFLUOUS USB HOST INFORMATION
-OUTPUT="$(echo "${OUTPUT}" | sed 's|\(usb[0-9]\+\)/.*/host|\1/host|g')"
+BLK_INFO="$(echo "${BLK_INFO}" | sed 's|\(usb[0-9]\+\)/.*/host|\1/host|g')"
 
 # CONDENSE THE TARGET INFORMATION
-OUTPUT="$(echo "${OUTPUT}" | sed 's|target[0-9:]\+/[0-9:]\+:\([0-9]\+\)|target\1|g')"
+BLK_INFO="$(echo "${BLK_INFO}" | sed 's|target[0-9:]\+/[0-9:]\+:\([0-9]\+\)|target\1|g')"
 
 # STRIP OFF BLOCKS
-OUTPUT="$(echo "${OUTPUT}" | sed 's|/block/.*||g')"
+BLK_INFO="$(echo "${BLK_INFO}" | sed 's|/block/.*||g')"
 
 # CONVERT -> TO A SPACE
-OUTPUT="$(echo "${OUTPUT}" | sed 's/ -> / /g')"
+BLK_INFO="$(echo "${BLK_INFO}" | sed 's/ -> / /g')"
 
 # SWAP COLUMNS
-OUTPUT="$(echo "${OUTPUT}" | awk '{t=$1; $1=$2; $2=t; print;}')"
+BLK_INFO="$(echo "${BLK_INFO}" | awk '{t=$1; $1=$2; $2=t; print;}')"
 
 # NOW GET DEVICE IDs and SIZES
 
-echo "${OUTPUT}" | while read -r LOCATION BLOCKDEV; do
+echo "${BLK_INFO}" | 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}$" | cut -d\  -f9)"
   DEV_BYTES="$(lsblk -bnPo NAME,SIZE | grep "\"${BLOCKDEV}\"" | cut -d\" -f 4)"
   if [ "${DEV_BYTES}" -ge $((1000**5)) ]; then
@@ -39,5 +39,8 @@ echo "${OUTPUT}" | while read -r LOCATION BLOCKDEV; do
   else
     DEVICE_SZ="${DEV_BYTES}B"
   fi
-  printf '%-20s %-9s %4s   %s\n' "${LOCATION}" "${BLOCKDEV}" "${DEVICE_SZ}" "${DEVICE_ID}"
+  echo "${LOCATION} ${BLOCKDEV} ${DEVICE_SZ} ${DEVICE_ID}" >> /tmp/bdmap
 done
+
+column -t -R3 -o"   " /tmp/bdmap
+rm /tmp/bdmap