retty

retty is a utility software that allows you to attach to processes running on another terminal. This feature is especially beneficial when you want to use a running application from a remote location. With retty, you can attach to the running application, do your work, and then detach it again. Its advantage over the screen is that you don't have to run the processes on retty in advance.

However, the software has a few bugs that need to be addressed. The first issue is that attaching less doesn't work, and the developers are still trying to figure out why. The second problem is that the new terminal does not become the new controlling terminal for the application. Unfortunately, this issue cannot be fixed without interfering with the kernel. This has negative consequences, including incorrect window size estimates by some applications like mutt, and the inability to stop an application using Ctrl-C (you need to send SIGINT manually).

Another issue is that you can only attach to a single process. Therefore, if you want to resume editing a mail in mutt, you need to attach the editor first, finish editing, quit it, and then attach mutt to continue with your work.

Overall, retty is a useful software for attaching to remote processes. However, users should be aware of its limitations, including its bugs and the inability to attach to multiple processes simultaneously.