this post was submitted on 20 Mar 2026
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Linux
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From Wikipedia, the free encyclopedia
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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You are correct this is the one mounted on
/tmp.Everything under
/runand/devis normal to be on tmpfs and should not be changed.In Linux, a lot of internal systems and devices are considered as files even if they are not really a file in the usual sense of it. For example what is in
/devis usually not really taking up RAM space but more of a representation of the devices (internal and external) that are attached to your system. You can programatically read and write to these "files" to communicate with the devices.In Linux, everything is a file