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Full Discussion: Weird 'find' results
Top Forums UNIX for Beginners Questions & Answers Weird 'find' results Post 302991841 by Don Cragun on Thursday 16th of February 2017 08:05:47 PM
Old 02-16-2017
Quote:
Originally Posted by bakunin
I don't think so: because the size (which is a small fraction of a GB) is rounded up to the next unit (GB here, therefore 1GB) all files with 1GB and less (but at least 1c) are shown.

I hope this helps.

bakunin
Hi bakunin,
No. When no units are specified, such as with -size 2, it is looking for a file that has a size that fits in 2 512-byte blocks which corresponds to a file with a file size that is 513 through 1024 bytes. But when units are specified, an unsigned number is looking for a file with the exact size specified (at least with a BSD-based find utility which is also used on macOS systems). Note that the POSIX standard's find utility's -size primary does not include a units modifier except c (which specifies that the number is counting bytes instead of 512-byte blocks); it just has negative numbers (meaning less than number), unsigned numbers (meaning exactly that number), and positive numbers (with a leading + meaning more than number).

If some other system's find utility treats unit modifiers as block size multipliers instead of just numbers of bytes, that difference in behavior from BSD might be a reason why POSIX hasn't standardized modifiers other than c.

Hi bodisha,
What operating system are you using?
These 2 Users Gave Thanks to Don Cragun For This Post:
bakunin rbatte1
 

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LEARN ABOUT FREEBSD

quot

QUOT(8) 						    BSD System Manager's Manual 						   QUOT(8)

NAME

     quot -- display disk space occupied by each user

SYNOPSIS

     quot [-acfhknv] [filesystem ...]

DESCRIPTION

     The quot utility is used to gather statistics about the disk usage for each local user.

     The following options are available:

     -a      Include statistics for all mounted file systems.

     -c      Display three columns containing number of blocks per file, number of files in this category, and aggregate total of blocks in files
	     with this or lower size.

     -f      For each user, display count of files and space occupied.

     -h      Estimate the number of blocks in each file based on its size.  Despite that this does not give the correct results (it does not
	     account for the holes in files), this option is not any faster and thus is discouraged.

     -k      Force the numbers to be reported in kilobyte counts.  By default, all sizes are reported in 512-byte block counts.

     -n      Given a list of inodes (plus some optional data on each line) in the standard input, for each file print out the owner (plus the
	     remainder of the input line).  This is traditionally used in the pipe:

		   ls -i | sed -e 's,^	*,,' | sort -k 1n | quot -n filesystem

	     to get a report of files and their owners.

     -v      In addition to the default output, display the number of files not accessed within 30, 60 and 90 days.

ENVIRONMENT

     BLOCKSIZE	If the environment variable BLOCKSIZE is set, and the -k option is not specified, the block counts will be displayed in units of
		that size block.

SEE ALSO

     df(1), quota(1), getmntinfo(3), fstab(5), mount(8)

HISTORY

     This implementation of quot is by Wolfgang Solfrank / TooLs GmbH.

BUGS

     ncheck (which would be a lot more useful than ls -i in the example above) does not exist in FreeBSD.

BSD
								 February 8, 1994							       BSD
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