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Full Discussion: Compare two file sizes.
Top Forums UNIX for Dummies Questions & Answers Compare two file sizes. Post 302485564 by mrreds on Wednesday 5th of January 2011 02:07:45 PM
Old 01-05-2011
Compare two file sizes.

Hi everyone!

I need to compare two file sizes.

One of them (size) will be stored in a flat file and the other coming from a listed file.

I can now get the first file size using:

Code:
 
SIZE=`ls -l $DOCTYPE | awk '{print $5}'`

1. How can I store this value in a flat file?
2. How can I read the flat file value in order to compare with a new file?
2.1 Could you please include the string-to-long conversion?

For question 1, I tried:

Code:
sed -n "${SIZE}" file > temp_size

but my created file is empty.

Sorry about this question, but this is my very first script.

Thank you all!
 

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getpagesizes(3C)					   Standard C Library Functions 					  getpagesizes(3C)

NAME
getpagesizes - get system supported page sizes SYNOPSIS
#include <sys/mman.h> int getpagesizes(size_t pagesize[], int nelem); DESCRIPTION
The getpagesizes() function returns either the number of different page sizes supported by the system or the actual sizes themselves. When called with nelem as 0 and pagesize as NULL, getpagesizes() returns the number of supported page sizes. Otherwise, up to nelem page sizes are retrieved and assigned to successive elements of pagesize[]. The return value is the number of page sizes retrieved and set in page- size[]. RETURN VALUES
Upon successful completion, the number of pagesizes supported or actually retrieved is returned. Otherwise, -1 is returned and errno is set to indicate the error. ERRORS
The getpagesizes() function will fail if: EINVAL The nelem argument is less than 0 or pagesize is NULL but nelem is non-zero. USAGE
The getpagesizes() function returns all the page sizes for which the hardware and system software provide support for the memcntl(2) com- mand MC_HAT_ADVISE. Not all processors support all page sizes or combinations of page sizes with equal efficiency. Applications programmers should take this into consideration when using getpagesizes(). ATTRIBUTES
See attributes(5) for descriptions of the following attributes: +-----------------------------+-----------------------------+ | ATTRIBUTE TYPE | ATTRIBUTE VALUE | +-----------------------------+-----------------------------+ |MT-Level |MT-Safe | +-----------------------------+-----------------------------+ SEE ALSO
memcntl(2), mmap(2), getpagesize(3C), attributes(5) SunOS 5.10 14 May 2001 getpagesizes(3C)
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