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Ways to switch between DEs on Fedora?
(sh.itjust.works)
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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 don't have Fedora around, but in general just install all the desktop environments you wish from package manager. Most (if not all) login managers support changing the environment on every login. I don't remember exactly how that works on plasma login manager, but there should be a pretty obvious menu item to pick from before inputting your password.
You obviously need to have autologin disabled in order to see the selection screen.