#!/bin/sh
	 #
	 #       @(#)set_root_pw 1.4 93/12/23 SMI
	 #
	 # This is an example Bourne shell script to be run after installation.
	 # It sets the system's root password to the entry defined in PASSWD.
	 # The encrypted password is obtained from an existing root password entry
	 # in /etc/shadow from an installed machine.
 
	 echo "setting password for root"
 
	 # set the root password
     PASSWD=dKO5IBkSF42lw
	 #create a temporary input file  [Sets the variable PASSWD to an encrypted
root password obtained from an existing entry in a system's /etc/shadow file.] 
     cp /a/etc/shadow /a/etc/shadow.orig  [Creates a temporary input file of /a/etc/shadow.] 
 
	 mv /a/etc/shadow /a/etc/shadow.orig
 	nawk -F: '{
              if ( $1 == "root" )  [Changes the root entry in the /etc/shadow file
for the newly installed system using $PASSWD as
the password field.] 
              printf"%s:%s:%s:%s:%s:%s:%s:%s:%s\n",$1,passwd,$3,$4,$5,$6,$7,$8,$9
          else
              printf"%s:%s:%s:%s:%s:%s:%s:%s:%s\n",$1,$2,$3,$4,$5,$6,$7,$8,$9
          }' passwd="$PASSWD" /a/etc/shadow.orig > /a/etc/shadow
     #remove the temporary file
     rm -f /a/etc/shadow.orig  [Removes the temporary /a/etc/shadow
file.] 
     # set the flag so sysidroot won't prompt for the root password
     sed -e 's/0 # root/1 # root/' ${SI_SYS_STATE} > /tmp/state.$$  [Changes the entry from 0 to a 1 in the state file, so that the user is not prompted for the root
password. The state file is accessed using the variable SI_SYS_STATE, whose value currently is /a/etc/.sysIDtool.state.
(To avoid problems with your scripts if this value changes, always reference
this file using $SI_SYS_STATE.) The sed
command shown here contains a tab character after the 0
and after the 1.] 
     mv /tmp/state.$$ ${SI_SYS_STATE}