Shell Programming and Scripting

#!/bin/sh
#
day=`date`
time=`echo $day | cut -d" " -f4`
hour=`echo $time | cut -d":" -f1`
minute=`echo $time | cut -d":" -f2`
dayname=`echo $day | cut -d" " -f1`

if [ $dayname = 'Mon' -a $hour = 12 -a $minute -lt 52 ]
then
echo "Before 12:52"
echo $dayname
echo $hour
echo $minute
exit

else

echo "Past 12:52"
echo $dayname
echo $hour
echo $minute
exit

fi

#!/bin/sh
#
day=`date`
time=`echo $day | cut -d" " -f4`
hour=`echo $time | cut -d":" -f1`
minute=`echo $time | cut -d":" -f2`
dayname=`echo $day | cut -d" " -f1`
if [ $dayname = 'Mon' -a $hour = 13 -a $minute -lt 21 ]||[ $dayname = 'Mon' -a $hour = 13 -a $minute -gt 23 ]
then
echo "SAFE TO RUN SCRIPT"
echo $dayname
echo $hour
echo $minute
exit
else
echo "SCRIPT SHOULD DIE"
echo $dayname
echo $hour
echo $minute
exit
fi

date "+1%w%H%M"

ok=0
now=$(date "+1%w%H%M")
if [[ $now -gt 160630 ||  $now -lt 160550 ]] ; then
    ok=1
else 
   exit
fi

#!/bin/sh
set -- `date "+%u %H %M"`
if [ $1 -eq 1  -a $2 -eq 17 ] && [ $3 -lt 21  -o $3 -gt 23 ]
then
        echo "SAFE TO RUN SCRIPT";
else
        echo "SCRIPT SHOULD DIE";
        exit 0;
fi