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DIRNAME(3)             FreeBSD Library Functions Manual             DIRNAME(3)

NAME
     dirname - extract the directory part of a pathname

SYNOPSIS
     #include <libgen.h>

     char *
     dirname(const char *path);

DESCRIPTION
     The dirname() function is the converse of basename(3); it returns a
     pointer to the parent directory of the pathname pointed to by path.  Any
     trailing `/' characters are not counted as part of the directory name.
     If path is a null pointer, the empty string, or contains no `/'
     characters, dirname() returns a pointer to the string ".", signifying the
     current directory.

IMPLEMENTATION NOTES
     The dirname() function returns a pointer to internal storage space
     allocated on the first call that will be overwritten by subsequent calls.

     Other vendor implementations of dirname() may store their result in the
     input buffer, making it safe to use in multithreaded applications.
     Future versions of FreeBSD will follow this approach as well.

RETURN VALUES
     On successful completion, dirname() returns a pointer to the parent
     directory of path.

     If dirname() fails, a null pointer is returned and the global variable
     errno is set to indicate the error.

ERRORS
     The following error codes may be set in errno:

     [ENAMETOOLONG]     The path component to be returned was larger than
                        MAXPATHLEN.

SEE ALSO
     basename(1), dirname(1), basename(3)

STANDARDS
     The dirname() function conforms to X/Open Portability Guide Issue 4,
     Version 2 (``XPG4.2'').

HISTORY
     The dirname() function first appeared in OpenBSD 2.2 and FreeBSD 4.2.

AUTHORS
     Todd C. Miller

FreeBSD 11.1-RELEASE-p4          July 29, 2016         FreeBSD 11.1-RELEASE-p4
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