Thread: ls -l and st.size in stat struct

Hi Everyone:

I hope you can help me with this but its driving me nuts and Im not seeing the solution, I'm trying to code my own version of ls -l:

And I'm stuck Im trying to output the total size of the files in a directory, converted the byte size value of st_size by dividing it by 1024 e.g. astatbuff->st_size/1024, now all I need to do is to total these values but for the life of me a cannot get it to work.

Any help would be much appreciated.
Christian

Shouldn't you do:

Code:

astatbuff->st_size/1024 + 1

otherwise the file size will say 0 if it's < 1024 bytes.

Hi:

Thanks to everyone who replied and thanks for the handy info but what I really wanted to know is once the file byte sizes have been rounded up how can I calculate the total file sizes e.g file 1 = 15kb and file 2 = 15k, 15kb + 15kb = 30kb total

Thanks once again.
Christian

Originally Posted by cljones81

Hi:

Thanks to everyone who replied and thanks for the handy info but what I really wanted to know is once the file byte sizes have been rounded up how can I calculate the total file sizes e.g file 1 = 15kb and file 2 = 15k, 15kb + 15kb = 30kb total

Thanks once again.
Christian

Add them up.

No really: whenever you print a number (or if you're not printing them, when you compute a number), add it to the total.

Originally Posted by me

Shouldn't you do:

Code:

astatbuff->st_size/1024 + 1

astatbuff->st_size/1024 + 1otherwise the file size will say 0 if it's < 1024 bytes.

Originally Posted by Todd Burch

Or, use a float, or, add 1023 then divide by 1024 just as you are to round up.

I think you're right. My example would be off by 1 if the file was exactly divisible by 1024.

Code:

(astatbuff->st_size + 1023) / 1024