获取当前目录getcwd，设置工作目录chdir，获取目录信息

开发者思源技术 2022年11月21日

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#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.

———————————–

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 ;
}