pathfind(3G)

NAME
     pathfind - search for named file in named directories

SYNOPSIS
     cc [flag ...] file ...  -lgen [library ...]

     #include <libgen.h>

     char *pathfind (const char *path, const char *name, const char
         *mode);

DESCRIPTION
     pathfind searches the directories named in path for the file name.  The
     directories named in path are separated by colons.  mode is a string of
     option letters chosen from the set rwxfbcdpugks:
                            Letter   Meaning
                            __________________________
                              r      readable
                              w      writable
                              x      executable
                              f      normal file
                              b      block special
                              c      character special
                              d      directory
                              p      FIFO (pipe)
                              u      set user ID bit
                              g      set group ID bit
                              k      sticky bit
                              s      size nonzero
     Options read, write, and execute are checked relative to the real (not
     the effective) user ID and group ID of the current process.

     If the file name, with all the characteristics specified by mode, is
     found in any of the directories specified by path, then pathfind returns
     a pointer to a string containing the member of path, followed by a slash
     character (/), followed by name.

     If name begins with a slash, it is treated as an absolute path name, and
     path is ignored.

     An empty path member is treated as the current directory.  rather, the
     unadorned name is returned.

EXAMPLES
     To find the ls command using the PATH environment variable:

          pathfind (getenv ("PATH"), "ls", "rx")

SEE ALSO
     sh(1), test(1), access(2), mknod(2), stat(2), getenv(3C)
DIAGNOSTICS
     If no match is found, pathname returns a null pointer, ((char *) 0).

NOTES
     The string pointed to by the returned pointer is stored in a static area
     that is reused on subsequent calls to pathfind.