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 con-
           figured 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 entries for this host in /etc/net/*/hosts.

        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
           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  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  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

     /etc/defaultrouter

     /etc/hostname.interface

     /etc/inet/hosts
           host name database

     /etc/inet/netmasks
           network mask database

     /etc/net/*/hosts

     /etc/nodename

     /etc/.rootkey
           super-user's secret key

     /etc/shadow
           shadow password file

     /etc/vfstab
           virtual file system table

     /var/nis/NIS_COLD_START
     /var/yp/binding/*/ypservers

ATTRIBUTES

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

     ____________________________________________________________
    |       ATTRIBUTE TYPE        |       ATTRIBUTE VALUE       |
    |_____________________________|_____________________________|
    | Availability                | SUNWadmap                   |
    |_____________________________|_____________________________|

SEE ALSO

     init(1M),    kdmconfig(1M),    sshd(1M),    sysidconfig(1M),
     sysidtool(1M),   hosts(4),  netmasks(4),  shadow(4),  attri-
     butes(5)

NOTES

     sys-unconfig is not available on diskless clients.