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Special Forums News, Links, Events and Announcements Software Releases - RSS News cromfs 1.5.5.3 (Default branch)
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Old 12-13-2008
cromfs 1.5.5.3 (Default branch)
Cromfs is a compressed read-only filesystem for Linux.Cromfs is best at archiving gigabytes of big files that have a lot of redundancy. It aims primarily at achieving a strong compression, even at the cost of memory and CPU time resources. It uses the LZMA compression algorithm from 7-zip and block merging.License: GNU General Public License v3Changes:
This relatively minor release addresses two major bugs in recent releases of Cromfs: A data corruption bug in mkcromfs, and compilation problems on 32-bit platforms. All users of Cromfs versions 1.5.4.2 or later are urged to upgrade.Image

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LEARN ABOUT OPENSOLARIS

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)