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traverse(3wi) [bsd man page]

TRAVERSE(3WI)															     TRAVERSE(3WI)

traverse - recursively traverse a directory SYNOPSIS
traverse (path, func) char *path; int (*func) (); func (path, filetype, position) char *path; DESCRIPTION
traverse applies its argument function func to its argument file pathname path. If path is a directory, then traverse applies func to all its entries. This traversal is in depth first order so that files are processed in the order that they are stored in the directory. The argument func should take three parameters: a file name, a file type, and a position. The call looks like this for directories: (*func) (path, 'd', position); and like this for other files: (*func) (path, 'f', position); The position is 0 when path is first encountered and 1 when traverse is done. This is used to allow processing before and after a direc- tory is processed. EXAMPLE
list (name, type, pos) char *name; { if (type == 'd') printf ("%s %s ", pos ? "Leaving" : "Entering", name); else /* type == 'f' */ printf (" %s ", name); } AUTHOR
Gary Perlman BUGS
There are no diagnostics when directories cannot be searched. December 16, 1984 TRAVERSE(3WI)

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dirname(3C)						   Standard C Library Functions 					       dirname(3C)

dirname - report the parent directory name of a file path name SYNOPSIS
#include <libgen.h> char *dirname(char *path); DESCRIPTION
The dirname() function takes a pointer to a character string that contains a pathname, and returns a pointer to a string that is a pathname of the parent directory of that file. Trailing '/' characters in the path are not counted as part of the path. If path does not contain a '/', then dirname() returns a pointer to the string "." . If path is a null pointer or points to an empty string, dirname() returns a pointer to the string "." . RETURN VALUES
The dirname() function returns a pointer to a string that is the parent directory of path. If path is a null pointer or points to an empty string, a pointer to a string "." is returned. ERRORS
No errors are defined. EXAMPLES
Example 1: Changing the Current Directory to the Parent Directory. The following code fragment reads a pathname, changes the current working directory to the parent directory of the named file (see chdir(2)), and opens the file. char path[[MAXPATHLEN], *pathcopy; int fd; fgets(path, MAXPATHLEN, stdin); pathcopy = strdup(path); chdir(dirname(pathcopy)); fd = open(basename(path), O_RDONLY); Example 2: Sample Input and Output Strings for dirname(). In the following table, the input string is the value pointed to by path, and the output string is the return value of the dirname() func- tion. +-----------------------------+-----------------------------+ | Input String | Output String | +-----------------------------+-----------------------------+ |"/usr/lib"" |"/usr" | +-----------------------------+-----------------------------+ |"/usr/" |"/" | +-----------------------------+-----------------------------+ |"usr" |"/" | +-----------------------------+-----------------------------+ |"/" |"/" | +-----------------------------+-----------------------------+ |"." |"." | +-----------------------------+-----------------------------+ |".." |"." | +-----------------------------+-----------------------------+ USAGE
The dirname() function modifies the string pointed to by path. The dirname() and basename(3C) functions together yield a complete pathname. The expression dirname(path) obtains the pathname of the directory where basename(path) is found. ATTRIBUTES
See attributes(5) for descriptions of the following attributes: +-----------------------------+-----------------------------+ | ATTRIBUTE TYPE | ATTRIBUTE VALUE | +-----------------------------+-----------------------------+ |Interface Stability |Standard | +-----------------------------+-----------------------------+ |MT-Level |MT-Safe | +-----------------------------+-----------------------------+ SEE ALSO
basename(1), chdir(2), basename(3C), attributes(5), standards(5) SunOS 5.10 18 Mar 2002 dirname(3C)
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