mkzftree man page on ElementaryOS

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MKZFTREE(1)			H. Peter Anvin			   MKZFTREE(1)

NAME
       mkzftree - Create a zisofs/RockRidge compressed file tree

SYNOPSIS
       mkzftree [OPTIONS]... INPUT OUTPUT

DESCRIPTION
       Takes  an input file tree (INPUT) and create a corresponding compressed
       file tree (OUTPUT) that can  be	used  with  an	appropriately  patched
       mkisofs(8)  to  create  a  transparent-compression  ISO 9660/Rock Ridge
       filesystem using the "ZF" compression records.

OPTIONS
       -f, --force
	      Always compress all files, even if they  get  larger  when  com‐
	      pressed.

       -z level, --level level
	      Select compression level (1-9, default is 9).  Lower compression
	      levels are faster, but typically result in larger output.

       -u, --uncompress
	      Uncompress an already compressed tree.  This can be used to read
	      a	 compressed  filesystem	 on  a	system	which cannot read them
	      natively.

       -p parallelism, --parallelism parallelism
	      Compress in parallel.  The parallelism value indicates how  many
	      compression threads are allowed to run.

       -x, --one-filesystem
	      Do  not  cross filesystem boundaries, but create directory stubs
	      at mount points.

       -X, --strict-one-filesystem
	      Do not cross filesystem boundaries, and do not create  directory
	      stubs at mount points.

       -C path, --crib-path path
	      Steal  ("crib")  files from another directory if it looks (based
	      on name, size, type  and	modification  time)  like  they	 match
	      entries  in  the new filesystem.	The "crib tree" is usually the
	      compressed version of an older version  of  the  same  workload;
	      this  thus  allows  for  "incremental  rebuilds" of a compressed
	      filesystem tree.	The files are hardlinked from the crib tree to
	      the  output  tree,  so if it is desirable to keep the link count
	      correct the crib path should be deleted before running  mkisofs.
	      The crib tree must be on the same filesystem as the output tree.

       -l, --local
	      Do  not  recurse into subdirectories, but create the directories
	      themselves.

       -L, --strict-local
	      Do not recurse into subdirectories, and do not  create  directo‐
	      ries.

       -F, --file
	      Indicates	 that  INPUT  may not necessarily be a directory; this
	      allows operation on a single file.  Note especially that	if  -F
	      is specified, and INPUT is a symlink, the symlink itself will be
	      copied rather than whatever it happens to point to.

       -s, --sloppy
	      Treat file modes, times and ownership data as less than precious
	      information  and don't abort if they cannot be set.  This may be
	      useful if running mkisofs on an input tree you do not own.

       -v, --verbose
	      Increase the program verbosity.

       -V value, --verbosity value
	      Set the program verbosity to value.

       -q, --quiet
	      Issue no messages whatsoever, including error messages.  This is
	      the same as specifying -V 0.

       -h, --help
	      Display a brief help message.

       -w, --version
	      Display the release version.

BUGS
       Long  options (beginning with --) may not work on all systems.  See the
       message printed out by mkzftree -h to see if this applies to your  sys‐
       tem.

       Inode  change  times (ctimes) are not copied.  This is a system limita‐
       tion and applies to all file copy programs.

       If using the parallel option (-z) the access times (atimes) on directo‐
       ries  may  or may not be copied.	 If it is important that the atimes on
       directories are copied exactly, avoid using -z.

AUTHOR
       Written by H. Peter Anvin <hpa@zytor.com>.

COPYRIGHT
       Copyright © 2001-2002 H. Peter Anvin.
       This is free software; see the source for copying conditions.  There is
       NO  warranty;  not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR
       PURPOSE.

SEE ALSO
       mkisofs(8)

zisofs-tools			 30 July 2001			   MKZFTREE(1)
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