What is the easiest way to backup ubuntu so it was easy to recover from the flash drive?

Love to experiment with ubuntu and in this connection often drop the system. And every time with my slow Internet to put all packages for new is too expensive and time consuming. Advise such a tool that would help me without any problems to create an image of ubuntu after installing it and my major working tools? So you could literally put all the running, download the updates, and once to create the backup, but that would fit on a flash drive. Then, if you drop the system, so you can with this USB flash drive without any problems under the net to restore the initial ubuntu image.

Google know how to use. Found several ways. But not checking them is not very clear which one to choose for my problem. Plus when you install ubuntu there's a suspicious item, alluding to the fact that it is possible to create images or restore points if I'm not mistaken.
June 3rd 19 at 21:01
3 answers
June 3rd 19 at 21:03
clonezilla
I have all the heavy files on a separate partition. and there is an archive of the system partition.
backup and restore do the reverse when loading otnica with clonezilla from the phone from within the app drivedroid.
June 3rd 19 at 21:05
just downloaded packages from /var/cache/apt/archives copy on a flash drive

but that would not drop the system, install according to the gentoo wiki and arch and play with them a couple of days

with services read about lxc or kvm (there can be backup easy to deploy), virtualbox at worst
then it is easier /var/cache/apt/archives to keep separate from the system partition.
ie when you reinstall the system archives repositories are not deleted. before installing interwise repository in /var/cache/apt/archives and packages are updated without swings from tyrneta. in the test environment, and done - two years piling up. - Sandra_Kautzer42 commented on June 3rd 19 at 21:08
June 3rd 19 at 21:07
timeshift in this respect is great.

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