也许您可以看看 xclip ，看看他们是如何做到的。

Maybe you can look at xclip and see how they have done it.

从
命令行到X
选择（剪贴板）的界面。它可以从
标准中读取数据，也可以从文件中读取数据，然后将其放入
X选择中，以粘贴到其他
X应用程序中。 xclip还可以打印X选择的
到标准输出，然后可以将
重定向到文件或
另一个程序。

It provides an interface to X selections ("the clipboard") from the command line. It can read data from standard in or a file and place it in an X selection for pasting into other X applications. xclip can also print an X selection to standard out, which can then be redirected to a file or another program.