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usr.man/man2/rmdir.2

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+.\"
+.\" $Id: rmdir.2,v 1.1 1997/10/30 05:47:18 gdr Exp $
+.\"
+.TH RMDIR 2 "17 October 1997" GNO "System Calls"
+.SH NAME
+rmdir \- remove (delete) a directory
+.SH SYNOPSIS
+#include <unistd.h>
+.sp 1
+int \fBrmdir\fR (const char *\fIpath\fR);
+.SH DESCRIPTION
+.BR rmdir
+will remove the directory named by
+.I path
+if the directory is empty, if it is not a mount point, and if the calling
+process has write permission in the parent directory.  The directory is
+considered empty when it contains only
+.B .
+and
+.B ..
+entries.
+.SH "RETURN VALUE"
+0 if successful, -1 and sets
+.B errno
+otherwise.
+.SH BUGS
+Since
+.BR rmdir
+is not yet implemented as a system call but as a library call, it is
+possible to delete a directory which is being used by a process, including
+that of
+.BR rmdir .
+.SH AUTHOR
+Devin Reade, <gdr@myrias.ab.ca>
+.SH "SEE ALSO"
+.BR mkdir (2),
+.BR unlink (2).