Calculating size of backups

UNIX for Beginners Q & A
1

hi everyone
i have a backup share mounted with me on solaris 10 which have daily backups. everyday i need to calculate all individual sizes of files and need to report somewhere. e.g i have .rman 7backup files daily . what i need that is there any commnd or variation of

du

command which can add all these files backups of certin date to save time.

plz any help.

regards

2 
# Find files older than 30 days whose filename contains 'backup' inside /path/to/folder
# and print their size in bytes
find /path/to/folder -name '*backup*' -mtime +30 -printf '%s\n' | 
# ....then sum their values and print
nawk '{ T += $1 } END { print T }'