synologist

#!/usr/bin/env bash
#
# synologist
#
# Synology system information.
#

# Header array.

HEADER=(
'Basic Information'
'Hardware'
'Network'
'Time'
'Storage'
)

# Field array.

FIELD=(
'Server name:'
'DSM version:'
'Serial number:'
'Model name:'
'CPU:'
'Total physical memory:'
'Ethernet stats (all):'
'Network stats (active):'
'System time:'
'Uptime:'
'Volume(s):'
)

# Display header message.

write_header() {

  name=$1; shift;

  printf "%s\\n""--------------------\\n$name%s\\n--------------------\\n"
  printf "%s\\n" "$@"
}

# Fully-qualified domain name.

host() {

  host=$(hostname -f)

    printf "%s\n" "${FIELD[0]} $host"
}

# Extract DSM product version.

dsm_version() {

  dsm=$(awk -F '"' 'NR==6 {print $2}' /etc.defaults/VERSION)

    printf "%s\n" "${FIELD[1]} $dsm"
}

# Synology serial no.

serial_number() {

  serial=$(cat /proc/sys/kernel/syno_serial)

    printf "%s\n" "${FIELD[2]} $serial"
}

# Synology model name.

model_name() {

  model=$(cat /proc/sys/kernel/syno_hw_version)

    printf "%s\n" "${FIELD[3]} $model"
}

# Extract CPU model name.

cpu_info() {

  cpu=$(awk '/model name/ || /Processor/ { sub(/^.*: /, ""); print; exit}' /proc/cpuinfo)

    printf "%s\n" "${FIELD[4]} $cpu"
}

# Total memory (gB) using kB to gB conversion.

memory() {

  gB=$(awk '/MemTotal/ {print $2/1024/1024}' /proc/meminfo)

    printf "%s\n" "${FIELD[5]} $gB gB"
}

# Get MAC address and IP address of ALL Ethernet devices.

ethernet_stats() {

  printf "%s\n" "${FIELD[6]}"

  for i in $(seq -w 0 5); do

    if ip addr show eth"$i" > /dev/null 2>&1; then

      ether=$(ip link show eth$i | awk '/ether/ {print $2}')
      inet=$(ip addr show eth$i | awk '/inet / {print $2}')

    printf "%s\n" "eth$i: $ether $inet"
  else
    printf "%s\n" "Device \"eth$i\" does not exist."
  fi
done
}

# Get MAC address and IP address of "UP" Ethernet devices.

network_stats() {

  printf "\n"
  printf "%s\n" "${FIELD[7]}"

  interfaces=$(ip addr show | awk '/eth/ && /state UP/ {print $2| "sort"}')

  for interface in $interfaces; do

    mac=$(ip addr show "$interface" | awk '/link\/ether/ {print $2}')
    ip=$(ip addr show "$interface" | awk '/inet/ {print $2;exit;}')

    printf "%s\n" "$interface $mac $ip"
done
}

# System (current) time.

system_time() {

  systemtime=$(uptime | awk '{ print $1}')

    printf "%s\n" "${FIELD[8]} $systemtime"
}

# Uptime: days hours:minutes

time_up() {

  timeup=$(uptime |awk -F '[ ,]' ' {print $4, $5, $7}')

    printf "%s\n" "${FIELD[9]} $timeup"
}

# Storage capacity by volume.

disk_storage() {

  storage=$(df -ha /volume* |awk '(NR>1) {print $6, $5, $3, $2}')

    printf "%s\n" "${FIELD[10]}"
    printf "%s\n" "Name     Used% Used Total"
    printf "%s\n" "$storage"
}

# Main.

main() {
  write_header "${HEADER[0]}"
  host
  dsm_version
  write_header "${HEADER[1]}"
  serial_number
  model_name
  cpu_info
  memory
  write_header "${HEADER[2]}"
  ethernet_stats
  network_stats
  write_header "${HEADER[3]}"
  system_time
  time_up
  write_header "${HEADER[4]}"
  disk_storage
}

main "$@"