Backup depending on bootups or connections to wifi network

Hi Terry,

this is more a suggestion than a question:

The scheduler in deja-dup offers some options to chose from: every day, every week and so on.
I would suggest to offer an additional type:

Backup every bootup, every second boot-up.
Or: Backup at every third connection to your local wifi-network.

Background 1:
Many avarage users do not use their notebook everyday.
There might be two weeks of heavy usage - than a daily backup would be senseful.
But there might be a week of lazyness - where there is just nothing to backup.

Background 2:
In these days it becoms quite popular to have a local NAS at home, where your can play media files from and -- where you can backup to.
Backing up is only possible, when you have access to your local NAS, mostly through your wifi-router.

deja-dup could count the connections to the local wifi-network and start the backup after a specific numberof connections.

I wrote a small script to illustrate this:

#!/bin/bash

USERNAME="<put your username here>"
ESSID_ATHOME="<put the id of your wifi network here>"
MAX_CONNECTIONS=5

COUNTER=/home/$USERNAME/.counter
if [ -e $COUNTER ]; then x=$(<$COUNTER); else x=0; fi

case "$2" in
        up)
                if (nm-tool | grep -q $ESSID_ATHOME); then
   echo $((x+1))>$COUNTER
   if [ $x -gt $MAX_CONNECTIONS ]; then
    sudo -H -u $USERNAME "deja-dup --backup"
    $(grep -z ^DISPLAY= "/proc/$(pgrep gnome-session)/environ") notify-send "Deja-Dup" "Backup started"
    echo $((x=0))>$COUNTER
   fi
         fi
                ;;

        *)
                echo $"Usage: $0 {up|down|pre-up|post-down}"
                exit 1
esac

exit $?

This script should go into /etc/NetworkManager/dispatcher.d/

The critical part is the line
sudo -H -u $USERNAME "deja-dup --backup"

deja-dup seems to start in root context anyway. (Any suggestions for that?)

Thank your for listening!

wwjd