simple lsscsi for .bashrc if there is no repository available or the server is too old

lsscsi-for-bashrc.sh

#!/bin/bash
# Dennis Ullrich
# [email protected]
# 2017-10-03

# Insert the following to your .bashrc and execute "source ~/.bashrc"
# It is for servers with no connection to a repository as a short workaround

if ! type lsscsi >/dev/null 2>&1; then
      lsscsi() {
            echo -e "WARNING: lsscsi is a .bashrc function!\n"
            for DEVICE in /sys/class/scsi_device/*; do 
                  BLOCK=$(ls ${DEVICE}/device/block 2>/dev/null)
                  if [ $? -ne 0 ]; then
                        BLOCK=$(readlink ${DEVICE}/device/block*)
                        BLOCK=${BLOCK##*/}
                  fi
                  _types=(\
                        "disk   " "tape   " "printer" "process" "worm   " "cd/dvd "      \
                        "scanner" "optical" "mediumx" "comms  " "(0xa)  " "(0xb)  "      \
                        "storage" "enclosu" "sim dsk" "opti rd" "bridge " "osd    "      \
                        "adi    " "sec man" "zbc    " "(0x15) " "(0x16) " "(0x17) "      \
                        "(0x18) " "(0x19) " "(0x1a) " "(0x1b) " "(0x1c) " "(0x1e) "      \
                        "wlun   " "no dev "                                              \
                  )
                  DEVTYPE=$(cat ${DEVICE}/device/type)
                  DEVTYPE=${_types[DEVTYPE]}
                  VENDOR=$(cat ${DEVICE}/device/vendor)
                  MODEL=$(cat ${DEVICE}/device/model)
                  REV=$(cat ${DEVICE}/device/rev)
                  printf "%-12s %-7s %-8s %-16s %-5s %s\n" "[${DEVICE##*/}]" "${DEVTYPE}" "${VENDOR}" "${MODEL}" "${REV}" "/dev/${BLOCK}"
            done

      }
fi