I am trying to get tabs in my screen using .screenrc, but while sourcing, it says command not found. It is on ubuntu14.04. I have screen installed. I can create screen but just unable to get tabs details using screenrc.
machine:~$ cat .screenrc
caption always caption string "test caption"
hardstatus string "%{= g} %{= w}%-Lw%{=r}%n%f* %t%{-}%+LW"
machine:~$ source .screenrc
caption: command not found
hardstatus: command not found
Can someone let me know how to resolve this?