I'm using Redo Backup Linux Live distribution for Windows disaster recovery situations (Gparted, TestDisk, system imaging, .. ).
I've got the Live system on USB flash disk and I would like to permanently add a few more linux applications to the system (mostly ddrescue). I know how to add an application "for the session" via:
apt-get update apt-get install ddrescue
But how to save the changes permanently to the flash disk? Can you please provide a script to make an image of actual running system and replace with it the content of the flash disk?