用at定义定时执行30天的脚本

export ATHOME=/usr/openv/scripts/perf

export ATCMD="nmon12e_aix537 -f -s 600 -c 144"

export ATENV=day_perf.env

export ATLOG=day_perf.log

if [ -f $ATHOME/$ATENV ]

then

. $ATHOME/$ATENV

else

DAYNUMBER=0

export DAYNUMBER

echo "sh $ATHOME/day_perf.sh" |at 12 am

echo "DAYNUMBER=$DAYNUMBER" > $ATHOME/$ATENV

exit 0

fi

date >> $ATHOME/$ATLOG

echo "DAYNUMBER=$DAYNUMBER" >> $ATHOME/$ATLOG

if [ $DAYNUMBER -lt 30 ]

then

echo "Execute command to do something!" >> $ATHOME/$ATLOG

$ATHOME/$ATCMD >> $ATHOME/$ATLOG 2>&1

echo "Cycle myself at next time point!" >> $ATHOME/$ATLOG

echo "sh $ATHOME/day_perf.sh" |at now +1 day >> $ATHOME/$ATLOG 2>&1

echo "expr add one!" >> $ATHOME/$ATLOG

DAYNUMBER=`expr $DAYNUMBER + 1`

echo "DAYNUMBER=$DAYNUMBER" > $ATHOME/$ATENV

echo "DAYNUMBER=$DAYNUMBER" >> $ATHOME/$ATLOG

echo "" >> $ATHOME/$ATLOG

else

echo "Delete myself and the log!" >> $ATHOME/$ATLOG

rm -f $ATHOME/day_perf.sh

rm -f $ATHOME/day_perf.env

rm -f $ATHOME/day_perf.log

fi