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Per default windows are removed from the window list as soon as the
windows process (e.g. shell) exits. When a string of two keys is
specified to the zombie command, ‘dead’ windows will remain in the list.
The kill command may be used to remove the window. Pressing the first key
in the dead window has the same effect. Pressing the second key, however,
screen will attempt to resurrect the window. The process that was initially
running in the window will be launched again. Calling zombie without
parameters will clear the zombie setting, thus making windows disappear when
the process terminates.
As the zombie setting is affected globally for all windows, this command
should probably be called defzombie, but it isn’t.
Optionally you can put the word onerror after the keys. This will
cause screen to monitor exit status of the process running in the window.
If it exits normally (’0’), the window disappears. Any other exit value
causes the window to become a zombie.
Additionally the zombie_timeout command exists.
If a window is declared “dead”, screen will automatically try to
resurrect the window after the timeout.
It only works if zombie keys are defined via zombie command.