add screen + ssh-agent magic: http://www.jukie.net/bart/blog/screen-ssh-agent

Author: wadey

screenrc

@@ -12,3 +12,7 @@ vbell off                 # no visual bell
 # Display status line: All windows, with the active window highlighted. Time and date right aligned.
 # hardstatus alwayslastline "%{= kR} %-Lw%{=b Kk} %n%f %t %{-}%+Lw %=%{= kR}%C%A  %D, %M/%d/%Y %{= dd}"
 hardstatus alwayslastline "%-Lw%{=b bw} %n%f %t %{-}%+Lw %=%C%A  %D, %M/%d/%Y %{= dd}"
+
+# http://www.jukie.net/bart/blog/screen-ssh-agent
+unsetenv SSH_AUTH_SOCK
+setenv SSH_AUTH_SOCK $HOME/.screen/ssh-auth-sock.$HOST

zsh.d/S40_aliases

@@ -71,3 +71,10 @@ alias suvi=sudovim
 autoload zmv
 # Easy "mass move" alias
 alias mmv='noglob zmv -W'
+
+# http://www.jukie.net/bart/blog/screen-ssh-agent
+_ssh_auth_save() {
+    mkdir -p "$HOME/.screen"
+    ln -sf "$SSH_AUTH_SOCK" "$HOME/.screen/ssh-auth-sock.$HOST"
+}
+alias screen='_ssh_auth_save && HOST="$HOST" screen'