UNIX, crontab file

-- Basic UNIX script command
http://freeengineer.org/learnUNIXin10minutes.html

--list Crontab file

crontab -l

--edit crontab file

crontab -e

--Get yesterday using UNIX script
today=`date "+%Y%m%d"`
#get yesterday
date "+%Y%m%d"
date +%Y%m%d -d "yesterday"

CurrentDate=`TZ="GMT+24" date +'%y%m%d'`
echo $CurrentDate;

YESTERDAY=$((`date +%d` -1))
MONTH=`date +%m`
YEAR=`date +%Y`
NDAY=`date +%u`
WEEKDAY=${DAYS[`date +%u`]}
if [ $YESTERDAY -eq "0" ]
then
MONTH=$((MONTH-1))
if [ $MONTH -eq "0" ]
then
MONTH=12
YEAR=$((YEAR-1))
fi
set `cal $MONTH $YEAR`
shift $(($# - 1))
YESTERDAY=$1
fi
echo $YEAR$MONTH$YESTERDAY;
varyesterday="$YEAR$MONTH$YESTERDAY"
#end yesterday

echo $varyesterday;