I just wrote a command line tool to copy frequently used things to clipboard. Check it out at https://github.com/hithacker/copymy. You can use it like this “copymy linked” or “copymy github” and it will copy the specified thing to your clipboard.
It requires you to add a toml config file named copymy_config.toml to the home directory and in that file you can add any number of key value pairs. Then you can just pass the name of the key to copymy and it will copy the value to the clipboard.