sys-unconfig(1M)	System Administration Commands	      sys-unconfig(1M)

NAME
       sys-unconfig - undo a system's configuration

SYNOPSIS
       /usr/sbin/sys-unconfig

DESCRIPTION
       The sys-unconfig command is used to restore a system's configuration to
       an "as-manufactured" state, ready to be reconfigured  again.  The  sys‐
       tem's  configuration  consists of hostname, Network Information Service
       (NIS) domain name, timezone, IP address, IP subnet mask, and root pass‐
       word.  This  operation  is the inverse of those performed by the sysid‐
       net(1M), sysidns(1M), and sysidsys(1M) programs run at boot. See sysid‐
       tool(1M).

       sys-unconfig does the following:

	   o	  Saves	   current   /etc/inet/hosts   file   information   in
		  /etc/inet/hosts.saved.

	   o	  If the current /etc/vfstab file contains NFS mount  entries,
		  saves the /etc/vfstab file to /etc/vfstab.orig.

	   o	  Restores the default /etc/inet/hosts file.

	   o	  Removes  the	default	 hostname  in  /etc/hostname.interface
		  files for all interfaces configured  when  this  command  is
		  run.	To  determine which interfaces are configured, run the
		  command 'ifconfig-a'. The /etc/hostname.interface files cor‐
		  responding  to all of the interfaces listed in the resulting
		  output, with the exception of the loopback interface	(lo0),
		  will be removed.

	   o	  Removes the default domainname in /etc/defaultdomain.

	   o	  Restores the timezone to PST8PDT in /etc/TIMEZONE.

	   o	  Disables  the	 Network Information Service (NIS) and Network
		  Information Service Plus (NIS+) if either NIS	 or  NIS+  was
		  configured.

	   o	  Removes the file /etc/inet/netmasks.

	   o	  Removes the file /etc/defaultrouter.

	   o	  Removes the password set for root in /etc/shadow.

	   o	  Removes the file /etc/.rootkey.

	   o	  Executes all system configuration applications. These appli‐
		  cations are defined by prior executions of a sysidconfig  -a
		  application.	(See  sysidconfig(1M)).	 When  sys-unconfig is
		  run, all system configuration applications  are  passed  one
		  argument, -u.

	   o	  Removes the file /etc/resolv.conf.

	   o	  Removes the file /etc/sysidcfg.

	   o	  Disables   LDAP   by	removing  /var/ldap/ldap_client_cache,
		  /var/ldap/ldap_client_file, /var/ldap/ldap_client_cred,  and
		  /var/ldap/cachemgr.log.

	   o	  Regenerates keys for sshd(1M).

       When  sys-unconfig  is  finished,  it  performs a system shutdown. sys-
       unconfig is a potentially dangerous utility and can only be run by  the
       super user.

FILES
       /etc/default/init

	   process control initialization

       /etc/defaultdomain

	   determines host's domain name

       /etc/defaultrouter

	   specifies an IPv4 host's default router

       /etc/hostname.interface

	   identifies  symbolic	 host  name  associated with network interface
	   interface

       /etc/inet/hosts

	   host name database

       /etc/inet/netmasks

	   network mask database

       /etc/nodename

	   local source for system name

       /etc/.rootkey

	   super-user's secret key

       /etc/shadow

	   shadow password file

       /etc/sysidcfg

	   system identification configuration file for diskless booting

       /etc/vfstab

	   virtual file system table

       /var/nis/NIS_COLD_START

	   list of NIS+ servers that serve a host's default domain

       /var/yp/binding/*/ypservers

	   identifies NIS servers to which the client is allowed to bind

ATTRIBUTES
       See attributes(5) for descriptions of the following attributes:

       ┌─────────────────────────────┬─────────────────────────────┐
       │      ATTRIBUTE TYPE	     │	    ATTRIBUTE VALUE	   │
       ├─────────────────────────────┼─────────────────────────────┤
       │Availability		     │SUNWadmap			   │
       └─────────────────────────────┴─────────────────────────────┘

SEE ALSO
       init(1M),  sshd(1M),  sysidconfig(1M),  sysidtool(1M),  hosts(4),  net‐
       masks(4), shadow(4), sysidcfg(4), attributes(5)

NOTES
       sys-unconfig is not available on diskless clients.

SunOS 5.11			  23 Jun 2009		      sys-unconfig(1M)

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