How do I copy text from my xterm without a mouse?

Question

I want to use part of the output of a command run from the command line in another xterm, or as part of a different command. For instance:

> grep error err         


        

Answer 1

I find XSel is useful in similar situations. It's a tool that manipulates the X selection. For example, this will store the output of your command to the clipboard:

grep error error.log | xsel -bi