Linux system Functions (DirName, basename) "Go"

Transferred from: http://blog.csdn.net/peter_cloud/article/details/9308333

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        Unless your originals are considered cross-platform.

       It is really convenient to use more system functions in Linux programming, hey, there is no way to get more lazy ~~~~~~

       Today I recorded two simple linux system functions that handle file paths, dirname and basename.

      

       

        head File:

                         #include <libgen.h>

        Function definition:

                         char * dirname (char * path);

                         char * basename (char * path);

        Function description:

                        char * dirname (char * path);

                        Function: Intercept the directory path in path and return.

                        char * basename (char * path);

                        Function: Intercept the last file or path name in the de-directory section of path.

         return value:

                       char * dirname (char * path);

                       Success: Returns the directory path pointer in the interception path.

                       Fails: returns NULL

                       char * basename (char * path);

                       Success: Returns the pointer to the last file or pathname in the truncated directory portion of path.

                       Fails: returns NULL

 

 

sample graph:

                       path dirname basename
                       "/ usr / lib" "/ usr" "lib"
                       "/ usr /" "/" "usr"
                       "usr" "." "usr"
                       "/" "/" "/"
                       "." "." "."
                       ".." "." ".."

           

Code example:

                     char * dirc, * basec, * bname, * dname;
                     char * path = "/ etc / passwd";

                     dirc = strdup (path);
                     basec = strdup (path);
                     dname = dirname (dirc);
                     bname = basename (basec);
                     printf ("dirname =% s, basename =% s \ n", dname, bname); 

Linux system Functions (DirName, basename) "Go"