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# Install SV cron system. You have to run this script as root.
# 12-30-91 Vlad
MAINDIR=/usr/lib/cron			# main cron directory
SPOOLPAR=/usr/spool/cron		# spool directory parent
SPOOLDIR=/usr/spool/cron/crontabs	# spool directory 
ALLOW=cron.allow			# list of allowed users
DENY=cron.deny				# list of denied users

YES=y

# Check if we are supperuser. 'logname' from COHware Vol.I
if [ "root" != `./logname` ]; then
	echo You have to be superuser to run this script
	exit 1
fi

# Install main cron directory
if [ ! -d $MAINDIR ]; then
	mkdir $MAINDIR
	chmod 700 $MAINDIR
fi

# Users that allows use crontab
echo -n "Do you want to allow users to use cron [y/n] - ? "
read ANS
while [ $ANS = $YES ]
do
	echo -n "User name ? "
	read NAME
	echo $NAME >> $MAINDIR/$ALLOW
	echo -n "More users [y/n] - ? "
	read ANS
done	

# Denied users
echo -n "Do you want to deny to use cron [y/n] - ? "
read ANS
while [ $ANS = $YES ]
do
	echo -n "User name ? "
	read NAME
	echo $NAME >> $MAINDIR/$DENY
	echo -n "More users [y/n] - ? "
	read ANS
done	
# Install spool cron directory
if [ ! -d $SPOOLPAR ]; then
	mkdir $SPOOLPAR
	chmod 700 $SPOOLPAR
fi
if [ ! -d $SPOOLDIR ]; then
	mkdir $SPOOLDIR
	chmod 700 $SPOOLDIR
fi

# copy crond and crontab. To avoid problem with old cp, will use chmod.
if [ ! -f /etc/crond ]; then
	cp bin/crond /etc
	chmod 4511 /etc/crond
fi
if [ ! -f /usr/bin/crontab ]; then
	cp bin/crontab /usr/bin
	chmod 4511 /usr/bin/crontab
fi

echo Installation Done.
echo To use a new cron system remove old crontab, create the new crontabs
echo "with crontab command. Make a changes in /etc/rc (see README.crond)"
echo "and reboot the system (just go to single user and back is enough)."

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