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mkzftree



SYNOPSIS

       mkzftree [OPTIONS]... INPUT OUTPUT


DESCRIPTION

       Takes  an input file tree (INPUT) and create a correspond­
       ing 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.

       -f, --force
              Always  compress all files, even if they get larger
              when compressed.

       -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  indi­
              cates  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 cre­
              ate 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  filesys­
              tem.   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  cor­
              rect the crib path should be deleted before running
              mkisofs.   The  crib  tree  must  be  on  the  same
              filesystem as the output tree.

       -l, --local
       -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  mes­
              sages.  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 sys­
       tems.  See the message printed out by mkzftree -h  to  see
       if this applies to your system.

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

       If  using  the  parallel  option  (-z)  the  access  times
       (atimes)  on  directories 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 condi­
       tions.  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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