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authorTobias Klauser <tklauser@distanz.ch>2008-01-27 11:37:44 +0100
committerTobias Klauser <tklauser@xenon.tklauser.home>2008-01-27 11:37:44 +0100
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+<TITLE>unlink</TITLE>
+<body bgcolor="#ffffcc">
+<hr>
+<pre>
+
+
+
+<h3>UNLINK(2) Linux Programmer's Manual UNLINK(2)
+</h3>
+
+<h3>NAME
+</h3> unlink - delete a name and possibly the file it refers to
+
+<h3>SYNOPSIS
+</h3> #include &lt;unistd.h&gt;
+
+ int unlink(const char *pathname);
+
+<h3>DESCRIPTION
+</h3> unlink deletes a name from the filesystem. If that name
+ was the last link to a file and no processes have the file
+ open the file is deleted and the space it was using is
+ made available for reuse.
+
+ If the name was the last link to a file but any processes
+ still have the file open the file will remain in existence
+ until the last file descriptor referring to it is closed.
+
+ If the name referred to a symbolic link the link is
+ removed.
+
+ If the name referred to a socket, fifo or device the name
+ for it is removed but processes which have the object open
+ may continue to use it.
+
+<h3>RETURN VALUE
+</h3> On success, zero is returned. On error, -1 is returned,
+ and errno is set appropriately.
+
+<h3>ERRORS
+</h3> EFAULT pathname points outside your accessible address
+ space.
+
+ EACCES Write access to the directory containing pathname
+ is not allowed for the process's effective uid, or
+ one of the directories in pathname did not allow
+ search (execute) permission.
+
+ EPERM The directory containing pathname has the sticky-
+ bit (S_ISVTX) set and the process's effective uid
+ is neither the uid of the file to be deleted nor
+ that of the directory containing it.
+
+ ENAMETOOLONG
+ pathname was too long.
+
+ ENOENT A directory component in pathname does not exist
+ or is a dangling symbolic link.
+
+ ENOTDIR A component used as a directory in pathname is
+ not, in fact, a directory.
+
+ EISDIR pathname refers to a directory.
+
+
+
+
+<h3>Linux 24 July 1993 1
+</h3>
+
+
+
+
+<h3>UNLINK(2) Linux Programmer's Manual UNLINK(2)
+</h3>
+
+ ENOMEM Insufficient kernel memory was available.
+
+ EROFS pathname refers to a file on a read-only filesys-
+ tem.
+
+<h3>CONFORMING TO
+</h3> SVID, AT&T, POSIX, X/OPEN, BSD 4.3
+
+<h3>BUGS
+</h3> Infelicities in the protocol underlying NFS can cause the
+ unexpected disappearance of files which are still being
+ used.
+
+</pre>
+<hr>
+<h3>SEE ALSO
+</h3><p>
+<a href=link.htm>link</a>,
+<a href=rename.htm>rename</a>,
+<a href=../FUNCTIONS/open.html>open</a>,
+<a href=rmdir.htm>rmdir</a>,
+<a href=mknod.htm>mknod</a>,
+<a href=remove.htm>remove</a>,
+<a href=rm.htm>rm</a>,
+<pre>
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+<h3>Linux 24 July 1993 2
+</h3>
+
+ </pre>
+<P>
+<hr>
+<p>
+<center>
+<table border=2 width=80%>
+<tr align=center>
+<td width=25%>
+<a href=../cref.html>Top</a>
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+</td>
+</tr>
+</table>
+</center>
+<p>
+<hr>
+
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