Provided by: zutils_1.8-3_amd64 bug

NAME

       ztest - verify the integrity of compressed files

SYNOPSIS

       ztest [options] [files]

DESCRIPTION

       Ztest  verifies  the  integrity of the specified compressed files.  Uncompressed files are
       ignored. If a file is specified as  '-',  the  integrity  of  compressed  data  read  from
       standard  input  is  verified.  Data  read  from  standard  input  must be all in the same
       compression format.

       If no files are specified, recursive searches examine the current working  directory,  and
       nonrecursive searches read standard input.

       The formats supported are bzip2, gzip, lzip and xz.

       Note  that error detection in the xz format is broken. First, some xz files lack integrity
       information. Second, not all xz decompressors can verify the integrity of  all  xz  files.
       Third,   section  2.1.1.2  'Stream  Flags'  of  the  xz  format  specification  allows  xz
       decompressors to produce garbage output without issuing any warning. Therefore,  xz  files
       can't always be verified as reliably as files in the other formats can.

       Exit  status is 0 if all compressed files verify OK, 1 if environmental problems (file not
       found, invalid flags, I/O errors, etc), 2 if any compressed file is corrupt or invalid.

OPTIONS

       -h, --help
              display this help and exit

       -V, --version
              output version information and exit

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

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

       -O, --force-format=<fmt>
              force given format (bz2, gz, lz, xz)

       -q, --quiet
              suppress all messages

       -r, --recursive
              operate recursively on directories

       -R, --dereference-recursive
              recursively follow symbolic links

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

       --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 © 2019  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.