hi,
I have a big file that contains datas since 4 years ago.

I need re-create this file but just lines that are 13 months ago from today.

see what I have: ( I have a file.ksh that calls this file.scl ok !!)

======== file.scl ================
/STATISTICS=stderr
/STABLE
/NODUPLICATES
/EXECUTE " today=`date +%Y%m%d` "
/EXECUTE " 13m_ago=`expr ${today} - 10000` "
/INFILE=$PAR_SCL1
/FIELD=(CONTA_CORRENTE, POSITION=1, SIZE=13)
/FIELD=(DATA_VENCIMENTO, POSITION=50, SIZE=10)
/CONDITION=(cond1, TEST=(DATA_VENCIMENTO > ($13m_ago) )
/INCLUDE=(CONDITION=cond1)
/KEY=(NUMERO_FATURA, ASCENDING)
/OUTFILE=$PAR_SCL2
/FIELD=(CONTA_CORRENTE, POSITION=1, SIZE=13)
/FIELD=(DATA_VENCIMENTO, POSITION=50, SIZE=10)

============================================

"DATA_VENCIMENTO" is the date that have to be in the maximum equal 13 months ago.
the layout of DATA_VENCIMENTO is 20071115 , for exemple.


I've already see the topic ( Yesterdays Date/Date Arithmetic) but it didn't help me ...

My Unix is Solaris.

does somebody can help ?
thanks , Andrea.