xclip -sel clip
起因是，配置 github ssh，发现有条命令 $ xclip -sel clip < ~/.ssh/id_rsa.pub ，xcip 的使用。但是 使用 man xclip 之后没找到 -sel 的选项。也没仔细阅读全部手册。
后来在 stack overflow 上提了 question,有人回答1
2man xclip is your friend: https://linux.die.net/man/1/xclip
TL;DR it tells you which X selection to copy the text to
其实就是 man xclip . 然后，又回过头来仔细阅读了 手册。 发现下面两段。
1 | # sel 是 -selection 的缩写 |
1 | #clip 是 clipboard 的缩写 |
还有就是 -selection 的解释。发现 X selection 有三个类型。-selection 选项默认是到 primary ，加上 clip 是到剪贴板。
Why do we have 3 types of X-selections in LINUX?
所以：
1 | $ xclip -sel clip < ~/.ssh/id_rsa.pub |
意思就是：将id_ras.pub 文件的内容复制到剪贴板
man xclip
1 | man xclip |
参考：
Why do we have 3 types of X-selections in LINUX?
xclip
1 | xclip - command line interface to X selections (clipboard) |
主要用法
-selection
specify which X selection to use, options are “primary” to use XA_PRIMARY (default), “secondary” for XA_SECONDARY or “clipboard” for XA_CLIPBOARD
默认是复制到 XA_PRIMARY , 加上参数 clipboard 是 复制到 XA_CLIPBOARD。
-sel 是 -selection 的缩写
Options can be abbreviated as long as they remain unambiguous. For example, it is possible to use -d or -disp instead of -display. However, -v couldn’t be used because it is ambiguous (it could be short for -verbose or -version), so it would be interpreted as a filename.
clip 是 clipboard 的缩写
Note that only the first character of the selection specified with the -selection option is important. This means that “p”, “sec” and “clip” would have the same effect as using “primary”, “secondary” or “clipboard” respectively.
1 | #将readme 的文件内容复制到剪贴板 |
1 | # 文件内容复制到 XA_PRIMARY |
1 | # XA_PRIMARY 里的内容输出 |
1 | # XA_CLIPBOARD （剪贴板）里的内容输出 |
