File Size calculation with AWK

Shell Programming and Scripting
1

Hello Friends,

Im calculating file sizes with below AWK script. I do this before some spesific files are transferred. I run the script it works but after several running it stuck with a limit of 2147483647 (2 Gbytes -1 byte) and cant exceed this. Something is wrong and I can't proceed, would appreciate any help.

find . \( -name "*.gz" -o -name "*.tar" -o -name "*.rar" \) -mtime +1 -exec ls -l {} \;| awk '/^-/ {a[$6 OFS sprintf("%2d",$7)]+=$5} END {for(i in a) printf "%s %15d %6s\n",i,a,"Bytes"}' >> sum_of_files.txt

SUM=`awk '{a+=$3}END{printf "%15d\n",a}'  sum_of_files.txt`

i find .gz, .tar or .rar files which are older than 1 day under a main directory and execute "ls -l" and calculate sizes but i also print 6th and 7th columns too into same file just for info.Then using 3rd colums i calculate the all sizes as a total sum.

sum_of_files.txt
Sep  4       416192512  Bytes
Sep  4       416192512  Bytes
Sep  4       416192512  Bytes
Sep  4       416192512  Bytes
Sep  4       416192512  Bytes
Sep  4       416192512  Bytes
Sep  4       416192512  Bytes
Sep  4       416192512  Bytes

The output of script is like below (sum of bytes above file) :

server{root}>./size.sh 
      416192512  # this is size of compressed folder only it is calculated #
server{root}>./size.sh 
      832385024
server{root}>./size.sh 
     1248577536
server{root}>./size.sh 
     1664770048
server{root}>./size.sh 
     2080962560
server{root}>./size.sh 
     2147483647
server{root}>./size.sh 
     2147483647
server{root}>./size.sh 
     2147483647

---------- Post updated at 05:12 PM ---------- Previous update was at 03:41 PM ----------

I'm afraid my system does not support 64 bits of aritmethic operations

 root@SL02 # file  `which bc` `which awk` `which perl`
/usr/bin/bc:    ELF 32-bit MSB executable SPARC Version 1, dynamically linked, stripped
/usr/bin/awk:   ELF 32-bit MSB executable SPARC Version 1, dynamically linked, stripped
/usr/bin/perl:  ELF 32-bit MSB executable SPARC Version 1, dynamically linked, stripped

Please advise, is my system unsufficient for such aritmethic operations and should i upgrade the solaris version to 64-Bit exec SPARC?

thanks by advanced

2

I cannot tell what is going on BUT - awk uses double precision arithmetic. It supports number up to 10^308 on your system:

> file `which awk`
/usr/xpg4/bin/awk:      ELF 32-bit MSB executable SPARC Version 1, dynamically linked, stripped
> echo "12345678910 12345678910" | awk '{sum=$1; sum+=$2; print sum}'
24691357820
> echo "12345678910 12345678910" | nawk '{sum=$1; sum+=$2; print sum}'
24691357820