opensolaris man page for fiocompress

fiocompress(1M) 					  System Administration Commands					   fiocompress(1M)

NAME
       fiocompress - file compression utility

SYNOPSIS
       /sbin/fiocompress -c [-m] [-b block_size] input_file output_file

       /sbin/fiocompress -d input_file output_file

DESCRIPTION
       The  fiocompress utility is a file compression tool that works together with the dcfs(7FS) file system to perform per-file compression. You
       can use fiocompress to decompress a compressed file or mark a compressed file as compressed, causing automatic decompression on	read.  The
       primary use of fiocompress is to compress files in the boot archive.

       Note that this utility is not a Committed interface. See attributes(5).

OPTIONS
       The following options are supported:

       -b block_size

	   Specify a block size for compression. The default block size is 8192.

       -c

	   Compress the specified file.

       -d

	   Decompress the specified file.

       -m

	   Mark the compressed file for automatic decompression on read. Can be used only in conjunction with -c.

EXIT STATUS
       0

	   The command completed successfully.

       -1

	   The command exited due to an error.

ATTRIBUTES
       See attributes(5) for descriptions of the following attributes:

       +-----------------------------+-----------------------------+
       |      ATTRIBUTE TYPE	     |	    ATTRIBUTE VALUE	   |
       +-----------------------------+-----------------------------+
       |Availability		     |SUNWcsr			   |
       +-----------------------------+-----------------------------+
       |Interface Stability	     |Private			   |
       +-----------------------------+-----------------------------+

SEE ALSO
       boot(1M), bootadm(1M), dcfs(7FS), ufs(7FS), attributes(5)

NOTES
       This compression/decompression utility works only with files stored in a UFS file system.

       There  is  no  obvious  way  to	determine whether a given file is compressed, other than copying the file and comparing the number of disk
       blocks of the copy against the original.

SunOS 5.11							    10 Dec 2008 						   fiocompress(1M)