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<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 3.2 Final//EN"><html><head><!-- Copyright 1997 The Open Group, All Rights Reserved --><title>zcat</title></head><body bgcolor=white><center><font size=2>The Single UNIX ® Specification, Version 2<br>Copyright © 1997 The Open Group</font></center><hr size=2 noshade><h4><a name = "tag_001_014_2961"> </a>NAME</h4><blockquote>zcat - expand and concatenate data</blockquote><h4><a name = "tag_001_014_2962"> </a>SYNOPSIS</h4><blockquote><pre><code>zcat <b>[</b><i>file</i>...<b>]</b></code></pre></blockquote><h4><a name = "tag_001_014_2963"> </a>DESCRIPTION</h4><blockquote>The<i>zcat</i>utility will write to standard output the uncompressed form offiles that have been compressed using the<i><a href="compress.html">compress</a></i>utility.It is the equivalent of<i><a href="uncompress.html">uncompress</a></i><b>-c</b>.Input files are not affected.</blockquote><h4><a name = "tag_001_014_2964"> </a>OPTIONS</h4><blockquote>None.</blockquote><h4><a name = "tag_001_014_2965"> </a>OPERANDS</h4><blockquote>The following operand is supported:<dl compact><dt><i>file</i><dd>The pathname of a file previously processed by the<i><a href="compress.html">compress</a></i>utility.If<i>file</i>already has the.Zsuffix specified,it is used as submitted.Otherwise, the.Zsuffix is appended to the filename prior to processing.</dl></blockquote><h4><a name = "tag_001_014_2966"> </a>STDIN</h4><blockquote>The standard input will be used only if no<i>file</i>operands are specified, or if a<i>file</i>operand is "-".</blockquote><h4><a name = "tag_001_014_2967"> </a>INPUT FILES</h4><blockquote>Input files must be compressed files that are in the format produced by the<i><a href="compress.html">compress</a></i>utility.</blockquote><h4><a name = "tag_001_014_2968"> </a>ENVIRONMENT VARIABLES</h4><blockquote>The following environment variables affect the execution of<i>zcat</i>:<dl compact><dt><i>LANG</i><dd>Provide a default value for the internationalisation variablesthat are unset or null.If<i>LANG</i>is unset or null, the corresponding value from theimplementation-dependent default locale will be used.If any of the internationalisation variables contains an invalid setting, theutility will behave as if none of the variables had been defined.<dt><i>LC_ALL</i><dd>If set to a non-empty string value,override the values of all the other internationalisation variables.<dt><i>LC_CTYPE</i><dd>Determine thelocale for the interpretation of sequences of bytes of text data ascharacters (for example, single- as opposed to multi-byte charactersin arguments).<dt><i>LC_MESSAGES</i><dd>Determine the locale that should be used to affectthe format and contents of diagnosticmessages written to standard error.<dt><i>NLSPATH</i><dd>Determine the location of message cataloguesfor the processing of<i>LC_MESSAGES .</i></dl></blockquote><h4><a name = "tag_001_014_2969"> </a>ASYNCHRONOUS EVENTS</h4><blockquote>Default.</blockquote><h4><a name = "tag_001_014_2970"> </a>STDOUT</h4><blockquote>The compressed files given as input will be written on standardoutput in their uncompressed form.</blockquote><h4><a name = "tag_001_014_2971"> </a>STDERR</h4><blockquote>Used only for diagnostic messages.</blockquote><h4><a name = "tag_001_014_2972"> </a>OUTPUT FILES</h4><blockquote>None.</blockquote><h4><a name = "tag_001_014_2973"> </a>EXTENDED DESCRIPTION</h4><blockquote>None.</blockquote><h4><a name = "tag_001_014_2974"> </a>EXIT STATUS</h4><blockquote>The following exit values are returned:<dl compact><dt>0<dd>Successful completion.<dt>>0<dd>An error occurred.</dl></blockquote><h4><a name = "tag_001_014_2975"> </a>CONSEQUENCES OF ERRORS</h4><blockquote>Default.</blockquote><h4><a name = "tag_001_014_2976"> </a>APPLICATION USAGE</h4><blockquote>None.</blockquote><h4><a name = "tag_001_014_2977"> </a>EXAMPLES</h4><blockquote>None.</blockquote><h4><a name = "tag_001_014_2978"> </a>FUTURE DIRECTIONS</h4><blockquote>None.</blockquote><h4><a name = "tag_001_014_2979"> </a>SEE ALSO</h4><blockquote><i><a href="compress.html">compress</a></i>,<i><a href="uncompress.html">uncompress</a></i>,<i>zcat</i>.</blockquote><hr size=2 noshade><center><font size=2>UNIX ® is a registered Trademark of The Open Group.<br>Copyright © 1997 The Open Group<br> [ <a href="../index.html">Main Index</a> | <a href="../xshix.html">XSH</a> | <a href="../xcuix.html">XCU</a> | <a href="../xbdix.html">XBD</a> | <a href="../cursesix.html">XCURSES</a> | <a href="../xnsix.html">XNS</a> ]</font></center><hr size=2 noshade></body></html>⌨️ 快捷键说明
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