使用者按下 ctrl+c 時如何執行命令？

使用者選擇任何文本並按下 ctrl+c。此操作後如何自動執行command？

我需要以下解決方案：

1. 如何獲得通知/檢查剪貼板的狀態
2. 通知/檢查後將自動執行命令

我不知道。

可以監控 X11 剪貼板。這僅適用於 X11，不適用於控制台複製和粘貼，也不適用於 tmux 或其他任何東西。因此，可移植性可能令人懷疑，您可能需要監控所有三個剪貼板，具體取決於您的需求。

   // whenclipchange.c

   // Run something when a X11 clipboard changes. Note that PRIMARY tends
   // to be the traditional default, while certain software instead uses
   // CLIPBOARD for I don't know what incompatible reason. There is also
   // SECONDARY to make your life more interesting.
   #define WHATCLIP "PRIMARY"
   
   #include <sys/wait.h>
   
   #include <assert.h>
   #include <err.h>
   #include <limits.h>
   #include <stdio.h>
   #include <stdlib.h>
   #include <unistd.h>
   
   #include <X11/Xlib.h>
   #include <X11/extensions/Xfixes.h>
   
   void WatchSelection(Display *display, Window window, const char *bufname,
                       char *argv[]);
   
   int
   main(int argc, char *argv[])
   {
   #ifdef __OpenBSD__
       if (pledge("exec inet proc rpath stdio unix", NULL) == -1)
           err(1, "pledge failed");
   #endif
   
       if (argc < 2) err(1, "need a command to run");
       argv++; // skip past command name of this program
   
       Display *display    = XOpenDisplay(NULL);
       unsigned long color = BlackPixel(display, DefaultScreen(display));
       Window window = XCreateSimpleWindow(display, DefaultRootWindow(display),
                                           0, 0, 1, 1, 0, color, color);
       WatchSelection(display, window, WHATCLIP, argv);
       /* NOTREACHED */
       XDestroyWindow(display, window);
       XCloseDisplay(display);
       exit(EXIT_FAILURE);
   }
   
   void
   WatchSelection(Display *display, Window window, const char *bufname,
                  char *argv[])
   {
       int event_base, error_base;
       XEvent event;
       Atom bufid = XInternAtom(display, bufname, False);
   
       assert(XFixesQueryExtension(display, &event_base, &error_base));
       XFixesSelectSelectionInput(display, DefaultRootWindow(display), bufid,
                                  XFixesSetSelectionOwnerNotifyMask);
       while (1) {
           XNextEvent(display, &event);
           if (event.type == event_base + XFixesSelectionNotify &&
               ((XFixesSelectionNotifyEvent *) &event)->selection ==
                 bufid) {
               pid_t pid = fork();
               if (pid < 0) err(1, "fork failed");
               if (pid) {
                   // NOTE this will block until the
                   // command finishes... so it might miss
                   // clipboard events?
                   int status;
                   wait(&status);
               } else {
                   execvp(*argv, argv);
                   exit(EXIT_FAILURE);
               }
           }
       }
   }

編譯並執行類似…

$ cc -std=c99 -I/usr/X11R6/include -L/usr/X11R6/lib -lX11 -lXft -lXfixes -o whenclipchange whenclipchange.c
$ ./whenclipchange echo clipboard changed

引用自：https://unix.stackexchange.com/questions/718453