Linux

The terminal world has Ctrl+C and Ctrl+(many other characters) already reserved for other things before they ever became standard for copy paste. For for this reason, Ctrl+Shift+(C for copy, V for paste) are used.

Old timer here! As many others replying to you indicate, Ctrl+C means SIGINT (interrupt running program). Many have offered the Ctrl+Shift+C, but back in my day, we used Shift+Insert (paste) and Ctrl+Insert (copy). They still work today, but Linux has 2 clipboard buffers and Shift+Insert works against the primary.

As an aside, on Wayland, you can use wl-paste and wl-copy in your commands, so git clone "$(wl-paste)" will clone whatever repo you copied to your clipboard. I use this one all the time

In Terminal land, Ctrl+C has meant Cancel longer than it's meant copy. Shift + Insert does what you think Ctrl+V will do.

Also, there's a separate thing that exists in most window managers called the Primary buffer, which is a separate thing from the clipboard. Try this: Highlight some text in one window, then open a text editor and middle click in it. Ta da! Reminder: This has absolutely nothing to do with the clipboard, if you have Ctrl+X or Ctrl+C'd something, this won't overwrite that.

Does Ctrl+Shift+V work?

Try ctrl+shift+v, iirc in the terminal ctrl+v is used as some other shortcut (and probably has been since before it was standard for "paste" I'd bet).

Also linux uses two clipboards iirc, the ctrl+c/v and the right click+copy/paste are two distinct clipboards.

What usually also works on Linux is selecting text with the mouse and pasting it by pressing the middle mouse button (or scroll wheel). You'd still need the mouse, but it's at least a little quicker ☺️

Due to some old school terminal things. Add shift to shortcut combinations, such as Ctrl+Shift+V to paste.

In most terminal (gnome terminal, blackbox, tilix etc.) you can actually override this behavior by changing keyboard shortcut. Blackbox even have a simple toggle that will enable ctrl+c v copy paste.

Gnome console is the only terminal I know that doesn't allow you to change this.

Try Shift+Insert. That's my preferred pasting method in most scenarios.

You need to use Ctrl+shift+v

...because that would make Ctrl+C Cut/Copy and that would be really bad. It would kill whatever was running.

So, it becomes Ctrl+Shift+C and paste got moved in the same way for consistency.

Ctrl+shift+V is what you should do. Ctrl+V is used by shells for I believe inserting characters without doing some sort of evaluation. I don't remember the specifics though, but yes Ctrl+shift+V to paste.

Shift + insert

Ctrl+V is already a shortcut for something (I don't even know what) but to paste just add shift so Ctrl+Shift+V.

(Also a beginner btw)

Use shift+control+v to paste. Shift+control+c to copy in the terminal. It's this way because control+c in the terminal is to break out of the currently running process.

While I don't have the answer as to why, it usually works if you just add a shift, ie. SHIFT+CTRL+V Many terminals also allow you to change the shortcut to copy and paste, so you can adjust for comfort's sake.

This is a really great question and it was something that tripped me up back in the day!

The answers above cover it already, so upvoting hoping it's more visible. Thanks for asking it. :)