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screen: don't enable multiuser mode by default.
This requires that the screen binary be suid.
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ad66ec8
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note this breaks the default
$SCREENDIR
of/run/screens
due to permission issues, might want to change this to e.g./tmp/shm
or (probably better for preventing cross-user abuse) install a file into/etc/profile.d
to set this variable to somewhere under$HOME
when not built in multiuser-mode.ad66ec8
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@nonchip I have just been warned about this. See #32159