#include <unistd.h>
#include <stdio.h>
#include <limits.h> int main(int argc, char* argv[])
{
char buf[PATH_MAX]; getcwd(buf, PATH_MAX-); printf("the current path is :%s\n", buf); return ;
}
设置工作目录：
#include <unistd.h>
int chdir(const char *path);
int fchdir(int fd);
chdir() changes the current working directory of the calling process to the directory specified in path.
fchdir() is identical to chdir(); the only difference is that the directory is given as an open file descriptor.
-----------------------------------
只要对目录有读写权限，就可获取目录信息。
打开目录：opendir
读取目录: readdir
关闭目录：closedir
DIR *opendir(const char *name);
DIR *fdopendir(int fd);
struct dirent *readdir(DIR *dirp);
int closedir(DIR *dirp);
#include <sys/types.h>
#include <dirent.h>
#include <stdlib.h>
#include <stdio.h> int my_readdir(const char* path)
{
DIR *dirp;
struct dirent *ptr; if ( (dirp=opendir(path)) == NULL)
{
return -;
} while( (ptr=readdir(dirp)) != NULL)
{
printf("file name is:%s\n", ptr->d_name);
} return ;
} int main(int argc, char* argv[])
{ if (argc < )
{
exit();
} if(my_readdir(argv[]) < )
{
exit();
} return ;
}