The control-A 4 will work only if screen 4 has already been created with the control-A c command. Try logging into your system and then executing screen. Once screen is running and you are back to your shell prompt press control-A c control-A c control-a c This will create three screens in addition to the original one which is created from the initial screen command. At this point you should be able to cycle through these screens by pressing: control-A 0 control-A 1 control-A 2 control-A 3 if, however, you press control-A 4, screen will signal an error and flash the valid screen numbers at the bottom of your terminal. In my case I hear: 0 ksh, 1 ksh, 2 ksh, 3 ksh: When you hear this, it means you have tried to access a non-existing screen. Also, screen allows you to kill a screen and recreate a new one, with the same screen number. If an application is hung, you can typically kill the session by pressing control-A k Screen will ask yu: Really thkill this windoww? <y/n) if you hit y the screen is killed and any dependent child processes will be killed as well. If this happened in screen 2 and you then press: control-A c Then a new screen 2 will be created running a new shell process. Rudy On Wed, May 29, 2002 at 01:25:07PM -0500, John J. Boyer wrote: > Rudy, > Thanks for the explanation. I am using the bash shell. It turned out > that screen isn't working after all. When I press control-a and then a > digit, say 4, the message "3* bash" appears and then whatever was on the > screen before reappears. I tried this in a document, expecting that I > would get a shell prompt, but the document just reappeared. > John