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  con-
     figuration to an "as-manufactured" state, ready to be recon-
     figured again. The system's configuration consists of  host-
     name,   Network   Information  Service  (NIS)  domain  name,
     timezone, IP address, IP subnet  mask,  and  root  password.
     This  operation  is  the  inverse  of those performed by the
     sysidnet(1M), sysidns(1M), and sysidsys(1M) programs run  at
     boot. See sysidtool(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
              corresponding  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.



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System Administration Commands                   sys-unconfig(1M)



         o    Removes the file /etc/.rootkey.

         o    Executes  all  system  configuration  applications.
              These  applications 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/ldapclientcache,
              /var/ldap/ldapclientfile,
              /var/ldap/ldapclientcred,                     and
              /var/ldap/cachemgr.log.

         o    Regenerates keys for sshd(1M).


     When sys-unconfig is finished, it performs  a  system  shut-
     down.  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




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System Administration Commands                   sys-unconfig(1M)



     /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/NISCOLDSTART

         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


ATRIBUTES
     See attributes(5) for descriptions of the  following  attri-
     butes:










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System Administration Commands                   sys-unconfig(1M)



     
           ATRIBUTE TYPE               ATRIBUTE VALUE       
    
     Availability                 SUNWadmap                   
    


SEE ALSO
     init(1M),    kdmconfig(1M),    sshd(1M),    sysidconfig(1M),
     sysidtool(1M),     hosts(4),     netmasks(4),     shadow(4),
     sysidcfg(4), attributes(5)

NOTES
     sys-unconfig is not available on diskless clients.









































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