agetty

Shell

1. SUID

   This function is performed by the privileged user if the executable has the SUID bit set and the right ownership because the effective privileges are not dropped.

   Remarks

   This executable runs commands directly, e.g., via functions like exec, remember to omit the -p argument of every /bin/sh invocation for distributions where the default shell does not drop SUID privileges.

   agetty -l /bin/sh -o -p -a root tty