this post was submitted on 20 Mar 2024
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Linux is a family of open source Unix-like operating systems based on the Linux kernel, an operating system kernel first released on September 17, 1991 by Linus Torvalds. Linux is typically packaged in a Linux distribution (or distro for short).
Distributions include the Linux kernel and supporting system software and libraries, many of which are provided by the GNU Project. Many Linux distributions use the word "Linux" in their name, but the Free Software Foundation uses the name GNU/Linux to emphasize the importance of GNU software, causing some controversy.
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I do not know much about Timeshift and Lucky backup. But a proper backup is not a on the same system even if it is a second drive internally. For some quick file recovery after deleting things you shouldn't have it is fine. A proper backup should be a separate system and ideally 2 systems one externally but this is overkill for most folks. With a separate system you can setup automated backups and disaster recovery. if you are scared the backup system can get compromised from the main system. you can set things up in such a way that the backup works in pull mode and the main system being backed up has no access to the backup system.
Not everyone can have 2 computers for all kinds of reasons.
Everyone do you best. Prioritize your data and take stronger precautions for the most important.
No one says you need to have 2 computers, a second external drive is fine.
A separate computer/server might be the best but their are many ways. Cloud storage is one of the many options that can be used as well.