auto_share from archwiki - modified to support both nfs and smb

auto_share

#!/bin/bash

function net_umount {
  umount -l -f $1 &>/dev/null
}

function net_mount {
  mountpoint -q $1 || mount $1
}

function do_mount {
  printf %s "$1" | while IFS= read -r line
  do
    SERVER=$(echo $line | grep -E -o "([0-9]{1,3}[\.]){3}[0-9]{1,3}")
    MOUNT_POINT=$(echo $line | cut -f2 -d" ")
  
    # Check if server already tested
    if [[ "${server_ok[@]}" =~ "${SERVER}" ]]; then
      # The server is up, make sure the share are mounted
      net_mount $MOUNT_POINT
    elif [[ "${server_notok[@]}" =~ "${SERVER}" ]]; then
      # The server could not be reached, unmount the share
      net_umount $MOUNT_POINT
    else
      # Check if the server is reachable
      ping -c 1 "${SERVER}" &>/dev/null

      if [ $? -ne 0 ]; then
        server_notok[${#server_notok[@]}]=$SERVER
        # The server could not be reached, unmount the share
        net_umount $MOUNT_POINT
      else
        server_ok[${#server_ok[@]}]=$SERVER
        # The server is up, make sure the share are mounted
        net_mount $MOUNT_POINT
      fi
    fi
  done
}

NFS_MOUNTS=$(sed -e '/^.*#/d' -e '/^.*:/!d' -e 's/\t/ /g' /etc/fstab | tr -s " ")$'\n'b
do_mount "$NFS_MOUNTS"

SMB_MOUNTS=$(sed -e '/^.*#/d' -e '/^.*\/\//!d' -e 's/\t/ /g' /etc/fstab | tr -s " ")$'\n'b
do_mount "$SMB_MOUNTS"