Provided by: zutils_1.4-1_amd64 bug

NAME

       zupdate - recompress bzip2, gzip, xz files to lzip files

SYNOPSIS

       zupdate [options] [files]

DESCRIPTION

       Zupdate recompresses files from bzip2, gzip, and xz formats to lzip format.  The originals
       are compared with the new files and then deleted.  Only regular files with  standard  file
       name  extensions  are  recompressed,  other  files  are  ignored.   Compressed  files  are
       decompressed and then recompressed on the fly; no temporary files are created.   The  lzip
       format  is  chosen  as destination because it is by far the most appropriate for long-term
       data archiving.

       If the lzip compressed version of a file already exists, the file is  skipped  unless  the
       '--force'  option is given. In this case, if the comparison with the existing lzip version
       fails, an error is returned and the original file is not deleted. The operation of zupdate
       is  meant  to  be  safe and not produce any data loss. Therefore, existing lzip compressed
       files are never overwritten nor deleted.

       Exit status is 0 if all the compressed files were successfully recompressed  (if  needed),
       compared and deleted (if requested). Non-zero otherwise.

OPTIONS

       -h, --help
              display this help and exit

       -V, --version
              output version information and exit

       -f, --force
              do not skip a file even if the .lz exists

       -k, --keep
              keep (don't delete) input files

       -l, --lzip-verbose
              pass a -v option to the lzip compressor

       -M, --format=<list>
              process only the formats in <list>

       -N, --no-rcfile
              don't read runtime configuration file

       -q, --quiet
              suppress all messages

       -r, --recursive
              operate recursively on directories

       -v, --verbose
              be verbose (a 2nd -v gives more)

       -0 .. -9
              set compression level [default 9]

       --bz2=<command>
              set compressor and options for bzip2 format

       --gz=<command>
              set compressor and options for gzip format

       --lz=<command>
              set compressor and options for lzip format

       --xz=<command>
              set compressor and options for xz format

REPORTING BUGS

       Report bugs to zutils-bug@nongnu.org
       Zutils home page: http://www.nongnu.org/zutils/zutils.html

COPYRIGHT

       Copyright  ©  2015  Antonio  Diaz  Diaz.   License  GPLv2+:  GNU  GPL  version  2 or later
       <http://gnu.org/licenses/gpl.html>
       This is free software: you are free to change and redistribute it.  There is NO  WARRANTY,
       to the extent permitted by law.