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DIRNAME(3) BSD 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 `/' charac- ters, dirname() returns a pointer to the string ".", signifying the cur- rent directory. IMPLEMENTATION NOTES The dirname() function returns a pointer to internal storage space allo- cated on the first call that will be overwritten by subsequent calls. Other vendor implementations of dirname() may modify the contents of the string passed to dirname(); this should be taken into account when writ- ing code which calls this function if portability is desired. RETURN VALUES On successful completion, dirname() returns a pointer to the parent di- rectory 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 BSD October 12, 2006 BSD
NAME | SYNOPSIS | DESCRIPTION | IMPLEMENTATION NOTES | RETURN VALUES | ERRORS | SEE ALSO | STANDARDS | HISTORY | AUTHORS
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