Man Zcat en anglais
ZCAT(P)                    POSIX Programmer's Manual                   ZCAT(P)



 

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(P)