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Top Forums UNIX for Dummies Questions & Answers Du command and modified date in ssh Post 302929417 by Don Cragun on Sunday 21st of December 2014 03:37:56 AM
Old 12-21-2014
The ls output is showing the size of the files listed (note that a directory is just one type of a file).

The du -hs output is showing the sizes of the blocks allocated to the file and (when the file is a directory) the size of the blocks allocated to the directory added to the sizes of the blocks allocated to all files in the file hierarchy rooted in that directory. Note also that the sizes of files in a file hierarchy reported by du -hs might not be what you expect. If there are hard links to files in a hierarchy, the blocks allocated to each linked file will only be counted once. Therefore, the sum of the sizes reported by:
Code:
du -hs dir1 dir2

might not be the sum of the sizes reported by:
Code:
du -hs dir1;du -hs dir2

And, if there are sparse files, the file size may be huge, but the number of blocks allocated to the file may be tiny.

And note that the size of a directory varies from filesystem type to filesystem type. On some filesystem types, the size of a directory shown by ls will be the size of the directory entries in that directory; in other filesystem types, it will just be the number of directory entries contained in that directory; and in other filesystem types, it might be something else. (On some filesystem types, some directory entries can be stored in the i-node for the directory. This makes the size of the directory zero until enough space is needed by directory entries to overflow the space in the i-node.)
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SETFILE(1)						    BSD General Commands Manual 						SETFILE(1)

NAME
/usr/bin/SetFile -- set attributes of files and directories SYNOPSIS
/usr/bin/SetFile [-P] [-a attributes] [-c creator] [-d date] [-m date] [-t type] file ... DESCRIPTION
/usr/bin/SetFile is a tool to set the file attributes on files in an HFS+ directory. It attempts to be similar to the setfile command in MPW. It can apply rules to more than one file with the options applying to all files listed. Flags: -P Acts on a symlink file instead on the file the symlink resolves to. -a attributes Sets the file attributes bits where attributes is a string of case sensitive letters. Each letter corresponds to a file attribute: an uppercase letter indicates that the attribute bit is set (1), a lowercase letter indicates that it is not (0). Note: attributes not specified remain unchanged. A | a Alias file B | b Has bundle C | c Custom icon (allowed on folders) D | d Located on the desktop (allowed on folders) E | e Extension is hidden (allowed on folders) I | i Inited - Finder is aware of this file and has given it a location in a window. (allowed on folders) L | l Locked M | m Shared (can run multiple times) N | n File has no INIT resource S | s System file (name locked) T | t "Stationery Pad" file V | v Invisible (allowed on folders) Z | z Busy (allowed on folders) -c creator Specifies the file's creator, where creator can be a string of four MacRoman characters, an empty string ('') designating a null creator, or a binary, decimal, octal, or hexadecimal number in standard notation (e.g. 0x52486368). -d date Sets the creation date, where date is a string of the form: "mm/dd/[yy]yy [hh:mm:[:ss] [AM | PM]]" Notes: Enclose the string in quotation marks if it contains spaces. The date must be in the Unix epoch, that is, between 1/1/1970 and 1/18/2038. If the year is provided as a two-digit year, it is assumed to be in the 21st century and must be from 00 (2000) through 38 (2038). -m date Sets the modification date where date is a string of the form in -d above. (mm/dd/[yy]yy [hh:mm:[:ss] [AM | PM]]) -t type Sets the file type, where type can be a string of four MacRoman characters, an empty string ('') designating a null type, or a binary, decimal, octal, or hexadecimal number in standard notation (e.g. 0x55455955). RETURN VALUES
0 attributes set 1 syntax error 2 any other error SEE ALSO
GetFileInfo(1) EXAMPLES
This command line sets the modification date of "myFile": SetFile -m "8/4/2001 16:13" myFile Mac OS X January 4, 2009 Mac OS X
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