Man Pages

basename(3p) - phpMan basename(3p) - phpMan

Command: man perldoc info search(apropos)  


BASENAME(3P)               POSIX Programmer's Manual              BASENAME(3P)



PROLOG
       This manual page is part of the POSIX Programmer's Manual.  The Linux implementation of this interface may dif-
       fer (consult the corresponding Linux manual page for details of Linux behavior), or the interface  may  not  be
       implemented on Linux.

NAME
       basename - return the last component of a pathname

SYNOPSIS
       #include <libgen.h>

       char *basename(char *path);


DESCRIPTION
       The  basename() function shall take the pathname pointed to by path and return a pointer to the final component
       of the pathname, deleting any trailing '/' characters.

       If the string consists entirely of the '/' character, basename() shall return a pointer to the string "/" .  If
       the string is exactly "//", it is implementation-defined whether '/' or "//" is returned.

       If path is a null pointer or points to an empty string, basename() shall return a pointer to the string "." .

       The  basename()  function  may modify the string pointed to by path, and may return a pointer to static storage
       that may then be overwritten by a subsequent call to basename().

       The basename() function need not be reentrant. A function that is not required to be reentrant is not  required
       to be thread-safe.

RETURN VALUE
       The basename() function shall return a pointer to the final component of path.

ERRORS
       No errors are defined.

       The following sections are informative.

EXAMPLES
   Using basename()
       The following program fragment returns a pointer to the value lib, which is the base name of /usr/lib.


              #include <libgen.h>
              ...
              char *name = "/usr/lib";
              char *base;


              base = basename(name);
              ...

   Sample Input and Output Strings for basename()
       In  the  following table, the input string is the value pointed to by path, and the output string is the return
       value of the basename() function.

                                               Input String     Output String
                                               "/usr/lib"       "lib"
                                               "/usr/"          "usr"
                                               "/"              "/"
                                               "///"            "/"
                                               "//usr//lib//"   "lib"

APPLICATION USAGE
       None.

RATIONALE
       None.

FUTURE DIRECTIONS
       None.

SEE ALSO
       dirname(), the Base Definitions volume of IEEE Std 1003.1-2001, <libgen.h>, the Shell and Utilities  volume  of
       IEEE Std 1003.1-2001, basename

COPYRIGHT
       Portions of this text are reprinted and reproduced in electronic form from IEEE Std 1003.1, 2003 Edition, Stan-
       dard for Information Technology -- Portable Operating System Interface (POSIX), The Open Group Base  Specifica-
       tions  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 Stan-
       dard,  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                         BASENAME(3P)