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ZCAT(1P)                   POSIX Programmer's Manual                  ZCAT(1P)

PROLOG
       This  manual  page is part of the POSIX Programmer's Manual.  The Linux
       implementation of this interface may differ (consult the  corresponding
       Linux  manual page for details of Linux behavior), or the interface may
       not be implemented on Linux.
NAME
       zcat - expand and concatenate data
SYNOPSIS
       zcat [file...]
DESCRIPTION
       The zcat utility shall write to standard output the  uncompressed  form
       of  files  that have been compressed using the compress utility.  It is
       the equivalent of uncompress -c. Input files are not affected.
OPTIONS
       None.
OPERANDS
       The following operand shall be supported:
       file   The pathname of a file  previously  processed  by  the  compress
              utility. If file already has the .Z suffix specified, it is used
              as submitted. Otherwise, the .Z suffix is appended to the  file-
              name prior to processing.

STDIN
       The  standard  input  shall be used only if no file operands are speci-
       fied, or if a file operand is '-' .
INPUT FILES
       Input files shall be compressed files that are in the  format  produced
       by the compress utility.
ENVIRONMENT VARIABLES
       The following environment variables shall affect the execution of zcat:
       LANG   Provide  a  default value for the internationalization variables
              that are unset or null. (See  the  Base  Definitions  volume  of
              IEEE Std 1003.1-2001,  Section  8.2,  Internationalization Vari-
              ables for the precedence of internationalization variables  used
              to determine the values of locale categories.)
       LC_ALL If  set  to a non-empty string value, override the values of all
              the other internationalization variables.
       LC_CTYPE
              Determine the locale for  the  interpretation  of  sequences  of
              bytes  of  text  data as characters (for example, single-byte as
              opposed to multi-byte characters in arguments).
       LC_MESSAGES
              Determine the locale that should be used to  affect  the  format
              and contents of diagnostic messages written to standard error.
       NLSPATH
              Determine the location of message catalogs for the processing of
              LC_MESSAGES .

ASYNCHRONOUS EVENTS
       Default.
STDOUT
       The compressed files given as input shall be written on standard output
       in their uncompressed form.
STDERR
       The standard error shall be used only for diagnostic messages.
OUTPUT FILES
       None.
EXTENDED DESCRIPTION
       None.
EXIT STATUS
       The following exit values shall be returned:
        0     Successful completion.
       >0     An error occurred.

CONSEQUENCES OF ERRORS
       Default.
       The following sections are informative.
APPLICATION USAGE
       None.
EXAMPLES
       None.
RATIONALE
       None.
FUTURE DIRECTIONS
       None.
SEE ALSO
       compress, uncompress
COPYRIGHT
       Portions  of  this text are reprinted and reproduced in electronic form
       from IEEE Std 1003.1, 2003 Edition, Standard for Information Technology
       --  Portable  Operating  System  Interface (POSIX), The Open Group Base
       Specifications Issue 6, Copyright (C) 2001-2003  by  the  Institute  of
       Electrical  and  Electronics  Engineers, Inc and The Open Group. In the
       event of any discrepancy between this version and the original IEEE and
       The  Open Group Standard, the original IEEE and The Open Group Standard
       is the referee document. The original Standard can be  obtained  online
       at http://www.opengroup.org/unix/online.html .

IEEE/The Open Group                  2003                             ZCAT(1P)