This directory was created by isomount package for mounting ext2 images.

You can manually utilize these commands by typing from xterm :

ext2mount : mount ext2 filesystem to /mnt/ext2 directory; will leave open until ext2drop command is entered.
ext2chroot : with ext2 already mounted, this command invokes chroot and optionally runs commands passed as paramters
ext2drop : this is lazy unload ext2 file system mounted on /mnt/ext2
ext2run : mounts an ext2 file system, runs a command, and unmounts when done

Examples :
sudo ext2mount /media/mmc2/debian-b3.ext2
sudo ext2chroot epiphany  (will change root and run epiphany web browser if exists)
sudo ext2chroot (will open chroot'ed command prompt)
sudo ext2drop  (will unmount the ext2 file system)
ext2run /media/mmc2/debian-b3.ext2 epiphany (mounts, runs epiphany, then unmounts)


This installer automatically updates the /etc/sudoers files to allow user to sudo ext2mount, sudo ext2chroot, and sudo ext2drop.
If you install multiple times on a single flash you might clean out duplicates in that /etc/sudoers file.