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X Clipboards

X has a things called "selections" which are just clipboards.

There are 3 selections one needs to be aware of:

  • PRIMARY for mouse selections. This is where terminal emulators, for example, will put stuff that gets selected, so this usually contains text that was last selected/highlighted with a mouse. This content can usually be accessed using middle mouse button.

    This does means that selecting anything overwrites this clipboard.

  • SECONDARY - from the Arch Wiki:

    SECONDARY is only used inconsistently and was intended as an alternate to PRIMARY.

    It is just another option, no one uses it in particular

  • CLIPBOARD for Windows-style cut/copy/paste (explicitly pressing Ctrl-C after selection, for example).

References:

Related:

  • xclip tool
  • xsel tool

Tags:

#literature-note #linux #X11