shutdown.1m (2012 03)

shutdown(1M) shutdown(1M)

If the -R option is used in a virtual partition environment on a partitionable system, then the requested

reconﬁguration will not take place until all the virtual partitions on that hard partition are shut down

and the virtual partition monitor is rebooted.

FILES

/etc/shutdown.allow

Authorization ﬁle.

The ﬁle contains lines that consist of a system host name and the login name of a user who is

authorized to reboot or halt the system. A superuser’s login name must be included in this ﬁle

in order to execute

shutdown. However, if the ﬁle is missing or of zero length, the

root user

can run the

shutdown program to bring the system down.

This ﬁle does not affect authorization to bring the system down to single-user state for mainte-

nance purposes; that operation is permitted only when invoked by a superuser.

A comment character,

#, at the beginning of a line causes the rest of the line to be ignored

(comments cannot span multiple lines without additional comment characters). Blank lines

are also ignored.

The wildcard character

+ can be used in place of a host name or a user name to specify all

hosts or all users, respectively (see hosts.equiv (4)).

For example:

# user1 can shut down systemA and systemB

systemA user1

systemB user1

# root can shut down any system

+ root

# Any user can shut down systemC

systemC +