this post was submitted on 03 Dec 2023
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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 just map both the user cache and the /tmp directory to a RAM drive. I allocated 4 GB but in practice it never gets even close to that much, and Linux seems to not be reserving the entire 4 GB at boot so I would assume how much RAM is used depends on how much is actually in your cache.
It also defers cache and tempfile related problems to turning it off and on again.