lockpw.sh

<B>Digital的Unix操作系统VAX 4.2源码</B>

:
#
#  @(#)lockpw.sh	4.1 (ULTRIX) 7/2/90
#									
# 			Copyright (c) 1984 by				
# 		Digital Equipment Corporation, Maynard, MA		
# 			All rights reserved.				
# 									
#    This software is furnished under a license and may be used and	
#    copied  only  in accordance with the terms of such license and	
#    with the  inclusion  of  the  above  copyright  notice.   This	
#    software  or  any  other copies thereof may not be provided or	
#    otherwise made available to any other person.  No title to and	
#    ownership of the software is hereby transferred.			
# 									
#    The information in this software is subject to change  without	
#    notice  and should not be construed as a commitment by Digital	
#    Equipment Corporation.						
# 									
#    Digital assumes no responsibility for the use  or  reliability	
#    of its software on equipment which is not supplied by Digital.	
#
# Purpose:	Lock the passwd and group files
# Usage:	lockpw
# Environment:	Bourne shell script
# Date:		3/15/84
# Author:	afd
# 
#	MOD:
#	001	ccb	09-03-1986
#		faster.
# Remarks:
#    Creates a lock file that the adduser script looks for.
#
# Trap ^c signal
trap "" 2
# Make sure that we are "root"
[ -w /etc/passwd ] ||
{
	echo "Please su to root first."
	exit 1
}
# Try to create the lock file
[ -f /etc/ptmp ] &&
{
	echo "
Password and group files are locked -- try later"
	exit 2
}
umask 0777
( > /etc/ptmp ) 2> /dev/null
exit 0