比较好的几个操作linux文件的程序

这里面(buff[strlen(buff)-1]=='/')检测的比较好

#include<stdio.h>
#include<stdlib.h>
#include<string.h>
#include<dirent.h>
#include <sys/stat.h>
#include <sys/types.h>
#include <unistd.h>

int main (int argc, char *argv[])
{
    if(2 != argc)
    {
        printf("\n Please pass in the directory name \n");
        return 1;
    }

    DIR *dp = NULL;
    struct dirent *dptr = NULL;
    // Buffer for storing the directory path
    char buff[128];
    memset(buff,0,sizeof(buff));

    //copy the path set by the user
    strcpy(buff,argv[1]);

    // Open the directory stream
    if(NULL == (dp = opendir(argv[1])) )
    {
        printf("\n Cannot open Input directory [%s]\n",argv[1]);
        exit(1);
    }
    else
    {
        // Check if user supplied '/' at the end of directory name.
        // Based on it create a buffer containing path to new directory name 'newDir'
        if(buff[strlen(buff)-1]=='/')
        {
            strncpy(buff+strlen(buff),"newDir/",7);
        }
        else
        {
            strncpy(buff+strlen(buff),"/newDir/",8);
        }

        printf("\n Creating a new directory [%s]\n",buff);
        // create a new directory
        mkdir(buff,S_IRWXU|S_IRWXG|S_IRWXO);
        printf("\n The contents of directory [%s] are as follows \n",argv[1]);
        // Read the directory contents
        while(NULL != (dptr = readdir(dp)) )
        {
            printf(" [%s] ",dptr->d_name);
        }
        // Close the directory stream
        closedir(dp);
        // Remove the new directory created by us
        rmdir(buff);
        printf("\n");
    }

    return 0;
}

下面这段是拷贝man page的。

#define _SVID_SOURCE
/* print files in current directory in reverse order */
       #include <dirent.h>

       int
       main(void)
       {
           struct dirent **namelist;
           int n;

           n = scandir(".", &namelist, NULL, alphasort);
           if (n < 0)
               perror("scandir");
           else {
               while (n--) {
                   printf("%s\n", namelist[n]->d_name);
                   free(namelist[n]);
               }
               free(namelist);
           }
       }