UNIX Sum using awk
unix sum for file
ls -ltr|grep -i 'Mar 10' | awk '{ SUM += $5} END { print SUM/1024/1024/1024 }' --- in GB
ls -l database_full_*_2859*_1.bk | awk '{ SUM += $5} END { print SUM/1024/1024 }' --- In Mb
find /u01/app/oracle/diag/rdbms/anuj/ANUJ/trace -name '*.trm' -exec ls -l {} \; | awk '{ Total += $5} END { print Total/1024/1024 }'
