How to mount an iPhone storage volume on Ubuntu Linux.

Install the required tools.

apt-get install idevicepair ifuse

Pair the device

idevicepair pair

The phone will have to be unlocked, and the prompt to trust this computer must be answered.

Mount the volume

mkdir ~/my_iphone
ifuse ~/my_iphone

Copy the photos to local volume

rsync -ar ~/my_iphone/DCIM/ Pictures/my_iphone

Unmount the volume

fusermount -u ~/my_iphone