topic Re: Sum values in Operating System - HP-UX

Sum values

Wagner_17 — Tue, 02 Dec 2008 15:02:54 GMT

Dear friends

Simple and stupid question:

I need to sum values of some files placed in some directory. I use awk to get values like exemple:

# ls -lt avbmon* | awk '{ print $5 }'
13628
13413
13413
13413

Now i have values, but i need obtain total. I try "sum" command, but i don't have succes with sintax. Can anyone help me? Thanks

Re: Sum values

TTr — Tue, 02 Dec 2008 15:08:47 GMT

awk can sum the numbers for you. Look at
http://forums.itrc.hp.com/service/forums/questionanswer.do?threadId=1218175

Re: Sum values

James R. Ferguson — Tue, 02 Dec 2008 15:10:41 GMT

Hi:

# ls -lt | awk 'END{printf "sum=%-3.0f\n",SUM};{SUM+=$5;print $5}'

Regards!

...JRF...

Re: Sum values

Wagner_17 — Tue, 02 Dec 2008 15:16:02 GMT

To obtain in MB values is just to divide by 1024 like below, right?

ls -lt avbmon* | awk 'END{printf "sum=%-3.0f\n",SUM};{SUM+=$5 /1024;print $5 }'
13628
13413
13413
13413
sum=53

Re: Sum values

Hein van den Heuvel — Tue, 02 Dec 2008 15:24:07 GMT

>> To obtain in MB values is just to divide by 1024 like below, right?

That would be KB.
For MB divide by 1024*1024 ( 1048576 )

Also, it is typically best to divide the sum, not the individual components.
Higher precision, and Fewer division (does not matter here).

If you only want the sum of the size, then drop the time sort order from -lt.

try:
ls -l avbmon* | awk 'END{printf "sum=%-3.0f\n",SUM/1048576};{SUM+=$5;print $5 }'

Hein

Re: Sum values

James R. Ferguson — Tue, 02 Dec 2008 15:25:05 GMT

Hi:

To get MB, do:

# ls -lt avbmon* | awk 'END{printf "sum=%-3.2f\n",SUM/1024/1024};{SUM+=$5;print $5}'

...keep the precision as long as you can.

Regards!

...JRF...

Re: Sum values

Wagner_17 — Tue, 02 Dec 2008 15:42:24 GMT

Thanks to all!!!