Proxmox snapnext.sh

#!/bin/bash
lastsnap_location=
  # For VMs: /root/vm_lastsnap
  # For CTs: /root/ct_lastsnap
list_location=
  # For VMs: /etc/pve/nodes/pve/qemu-server
  # For CTs: /etc/pve/lxc
snap_command=
  # For VMs: "qm snapshot"
  # For CTs: "pct snapshot"
snap_suffix="auto_$(date +%Y%m%d) -description \"Autosnapped at $(date +%H:%M:%S)\""
snapped=false
first=false
if [ -f $lastsnap_location ]; then
  lastsnap=`cat $lastsnap_location`
else
  lastsnap=0
fi
for i in `ls $list_location | egrep -o '[0-9]{3,}'`; do
  if [[ $first -eq false ]]; then
    first=$i
  fi
  if (( $i > $lastsnap )); then
    echo $snap_command $i $snap_suffix | /bin/sh
    snapped=true
    echo $i > $lastsnap_location
    break
  fi
done
if ! $snapped; then
  echo $snap_command $first $snap_suffix | /bin/sh
  echo $first > $lastsnap_location
fi