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23 <center><font size="2">The Open Group Base Specifications Issue 8<br>
24 IEEE Std 1003.1-2024<br>
25 Copyright © 2001-2024 The IEEE and The Open Group</font></center>
26 <hr size="2" noshade>
27 <a name="top" id="top"></a> <a name="unlink" id="unlink"></a> <a name="tag_20_139" id="tag_20_139"></a><!-- unlink -->
28 <h4 class="mansect"><a name="tag_20_139_01" id="tag_20_139_01"></a>NAME</h4>
29 <blockquote>unlink — call the unlink function</blockquote>
30 <h4 class="mansect"><a name="tag_20_139_02" id="tag_20_139_02"></a>SYNOPSIS</h4>
31 <blockquote class="synopsis">
32 <div class="box"><code><tt><sup>[<a href="javascript:open_code('XSI')">XSI</a>]</sup> <img src="../images/opt-start.gif" alt=
33 "[Option Start]" border="0"> unlink</tt> <i>file</i> <tt><img src="../images/opt-end.gif" alt="[Option End]" border="0"></tt></code></div>
34 </blockquote>
35 <h4 class="mansect"><a name="tag_20_139_03" id="tag_20_139_03"></a>DESCRIPTION</h4>
36 <blockquote>
37 <p>The <i>unlink</i> utility shall perform the function call:</p>
38 <pre>
39 <tt>unlink(</tt><i>file</i><tt>);
40 </tt></pre>
41 <p>A user may need appropriate privileges to invoke the <i>unlink</i> utility.</p>
42 </blockquote>
43 <h4 class="mansect"><a name="tag_20_139_04" id="tag_20_139_04"></a>OPTIONS</h4>
44 <blockquote>
45 <p>None.</p>
46 </blockquote>
47 <h4 class="mansect"><a name="tag_20_139_05" id="tag_20_139_05"></a>OPERANDS</h4>
48 <blockquote>
49 <p>The following operands shall be supported:</p>
50 <dl compact>
51 <dd></dd>
52 <dt><i>file</i></dt>
53 <dd>The pathname of an existing file.</dd>
54 </dl>
55 </blockquote>
56 <h4 class="mansect"><a name="tag_20_139_06" id="tag_20_139_06"></a>STDIN</h4>
57 <blockquote>
58 <p>Not used.</p>
59 </blockquote>
60 <h4 class="mansect"><a name="tag_20_139_07" id="tag_20_139_07"></a>INPUT FILES</h4>
61 <blockquote>
62 <p>Not used.</p>
63 </blockquote>
64 <h4 class="mansect"><a name="tag_20_139_08" id="tag_20_139_08"></a>ENVIRONMENT VARIABLES</h4>
65 <blockquote>
66 <p>The following environment variables shall affect the execution of <i>unlink</i>:</p>
67 <dl compact>
68 <dd></dd>
69 <dt><i>LANG</i></dt>
70 <dd>Provide a default value for the internationalization variables that are unset or null. (See XBD <a href=
71 "../basedefs/V1_chap08.html#tag_08_02"><i>8.2 Internationalization Variables</i></a> for the precedence of internationalization
72 variables used to determine the values of locale categories.)</dd>
73 <dt><i>LC_ALL</i></dt>
74 <dd>If set to a non-empty string value, override the values of all the other internationalization variables.</dd>
75 <dt><i>LC_CTYPE</i></dt>
76 <dd>Determine the locale for the interpretation of sequences of bytes of text data as characters (for example, single-byte as
77 opposed to multi-byte characters in arguments).</dd>
78 <dt><i>LC_MESSAGES</i></dt>
79 <dd><br>
80 Determine the locale that should be used to affect the format and contents of diagnostic messages written to standard error.</dd>
81 <dt><i>NLSPATH</i></dt>
82 <dd>Determine the location of messages objects and message catalogs.</dd>
83 </dl>
84 </blockquote>
85 <h4 class="mansect"><a name="tag_20_139_09" id="tag_20_139_09"></a>ASYNCHRONOUS EVENTS</h4>
86 <blockquote>
87 <p>Default.</p>
88 </blockquote>
89 <h4 class="mansect"><a name="tag_20_139_10" id="tag_20_139_10"></a>STDOUT</h4>
90 <blockquote>
91 <p>None.</p>
92 </blockquote>
93 <h4 class="mansect"><a name="tag_20_139_11" id="tag_20_139_11"></a>STDERR</h4>
94 <blockquote>
95 <p>The standard error shall be used only for diagnostic messages.</p>
96 </blockquote>
97 <h4 class="mansect"><a name="tag_20_139_12" id="tag_20_139_12"></a>OUTPUT FILES</h4>
98 <blockquote>
99 <p>None.</p>
100 </blockquote>
101 <h4 class="mansect"><a name="tag_20_139_13" id="tag_20_139_13"></a>EXTENDED DESCRIPTION</h4>
102 <blockquote>
103 <p>None.</p>
104 </blockquote>
105 <h4 class="mansect"><a name="tag_20_139_14" id="tag_20_139_14"></a>EXIT STATUS</h4>
106 <blockquote>
107 <p>The following exit values shall be returned:</p>
108 <dl compact>
109 <dd></dd>
110 <dt> 0</dt>
111 <dd>Successful completion.</dd>
112 <dt>>0</dt>
113 <dd>An error occurred.</dd>
114 </dl>
115 </blockquote>
116 <h4 class="mansect"><a name="tag_20_139_15" id="tag_20_139_15"></a>CONSEQUENCES OF ERRORS</h4>
117 <blockquote>
118 <p>Default.</p>
119 </blockquote>
120 <hr>
121 <div class="box"><em>The following sections are informative.</em></div>
122 <h4 class="mansect"><a name="tag_20_139_16" id="tag_20_139_16"></a>APPLICATION USAGE</h4>
123 <blockquote>
124 <p>None.</p>
125 </blockquote>
126 <h4 class="mansect"><a name="tag_20_139_17" id="tag_20_139_17"></a>EXAMPLES</h4>
127 <blockquote>
128 <p>None.</p>
129 </blockquote>
130 <h4 class="mansect"><a name="tag_20_139_18" id="tag_20_139_18"></a>RATIONALE</h4>
131 <blockquote>
132 <p>None.</p>
133 </blockquote>
134 <h4 class="mansect"><a name="tag_20_139_19" id="tag_20_139_19"></a>FUTURE DIRECTIONS</h4>
135 <blockquote>
136 <p>None.</p>
137 </blockquote>
138 <h4 class="mansect"><a name="tag_20_139_20" id="tag_20_139_20"></a>SEE ALSO</h4>
139 <blockquote>
140 <p><a href="../utilities/link.html#tag_20_66"><i>link</i></a> , <a href="../utilities/rm.html#"><i>rm</i></a></p>
141 <p>XBD <a href="../basedefs/V1_chap08.html#tag_08"><i>8. Environment Variables</i></a></p>
142 <p>XSH <a href="../functions/unlink.html#tag_17_649"><i>unlink</i></a></p>
143 </blockquote>
144 <h4 class="mansect"><a name="tag_20_139_21" id="tag_20_139_21"></a>CHANGE HISTORY</h4>
145 <blockquote>
146 <p>First released in Issue 5.</p>
147 </blockquote>
148 <h4 class="mansect"><a name="tag_20_139_22" id="tag_20_139_22"></a>Issue 8</h4>
149 <blockquote>
150 <p>Austin Group Defect 1122 is applied, changing the description of <i>NLSPATH .</i></p>
151 </blockquote>
152 <div class="box"><em>End of informative text.</em></div>
153 <hr>
154 <p> </p>
155 <a href="#top"><span class="topOfPage">return to top of page</span></a><br>
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