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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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X11 Secondary Selection (www.cs.man.ac.uk)

submitted 6 days ago* (last edited 6 days ago) by wlfrn@lemmy.ml to c/linux@lemmy.ml

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The secondary-selection is used when the cursor is in some focussed Recipient window, in order to grab some text (or whatever) from some Donor window (possibly the same window as the Recipient) and have that text pasted at the Recipient's insertion-point (overwriting any primary-selection in the Recipient).

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[–] Quazatron@lemmy.world 1 points 5 days ago (1 children)

I assumed primary is ctrl-c/ctrl-v and secondary is select/middle-click. I've never come across this ctrl-middle-click, it does the same with and without the ctrl key.

I seen to recall reading something this week about a distro dropping middle click, so I probably conflated both issues and failed.

But you're right, I did not read the fine article.

[–] wlfrn@lemmy.ml 2 points 3 days ago

There are lots of ways to move data between or within graphical windows! But the list is shrinking

clipboard - cltr-c / ctrl-v
drag and drop - mouse selection, mouse drag
primary - mouse selection -> middle click (or shift+ins); moves text cursor
secondary - ctrl+select (alt+select in emacs); secondary doesn't move text cursor. largely forgoten. motif, patched gtk; not in qt, tk, mainline gtk, etc
cut-buffer - deprecated everywhere. set by application using X11 window property for state

https://en.wikipedia.org/wiki/X_Window_System_selection