Automatically mount and unmount network shares with connection to company network

handle-shares

#! /usr/bin/env bash

# Put this in /etc/NetworkManager/dispatcher.d/
# to mount and unmount smb/cifs shares with the connection to the network

if test "${IP4_DOMAINS}" = "${COMPANY_DOMAIN}"; then
  if "${2}" = "up" -o "${2}" = "vpn-up"; then
    # mount the common directory as read only to avoid mistakes
    mount /mnt/sharedserver
    mount /mnt/home
  fi
elif test "${2}" = "down" -o "${2}" = "vpn-down"; then
  umount -l -a -t cifs # lazily unmount all cifs filesystems
fi

mountpoints

# This is the /etc/fstab file

# ...
# lots other entries
# ...
//SHAREADDRESS/common/directory/path /mnt/sharedserver cifs noauto,ro,uid=1000,gid=100,credentials=/home/username/.sharedserver.creds 0 0
//SHAREADDRESS/users/my-directory /mnt/home cifs noauto,credentials=/home/username/.sharedserver.creds 0 0

sharedserver.creds

domain=DOMAIN
username=USERNAME
password=PASSWORD

The even better way is to add the mount points to /etc/fstab and then you can just mount the mount point without specifying anything further. And it makes it easier to remount (for example to add write permissions) later on.