linux 将一个文件分解成多个不同名文件

1.通过c直接实现

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

int fileNum=;
char fileNam[];

char fileName(){
    fileNam[]=;
    fileNum += ;
    char str[];
    char s1[]="./image/";
    char s2[]=".yuv";
    sprintf(str,"%d",fileNum);
    sprintf(fileNam,"%s%s%s",s1,str,s2);
}

int main(int argc,char* argv[])
{
    int fd_src,fd_dst;
    char buf[];
    int n;

    if((fd_src=open("./raw.data",O_RDONLY))<)
    {
        perror("open src");
        exit(EXIT_FAILURE);
    }

    while((n=read(fd_src,buf,sizeof(buf)))>){
        if (n != )
        {
            perror("file size small");
            close(fd_src);
            exit(EXIT_FAILURE);
        }

        //lseek(fd_src,245120,SEEK_CUR);
        fileName();    

        if (fd_dst = open(fileNam,O_CREAT|O_WRONLY,)<)
        {
            perror("open dst fail");
            close(fd_src);
            exit(EXIT_FAILURE);
        }

        write(fd_dst,buf,n);

        printf("copy successfully\n");
        close(fd_dst);
        system("./move.sh");
    }
    printf("copy successfully\n");
    close(fd_src);
    exit(EXIT_SUCCESS);
}

2.通过调用system函数执行脚本

#! /bin/sh 

file_name(){
    rm ./image/.txt
    touch ./image/.txt
    chmod  ./image/.txt
    ls -l image | cut -d ' ' -f  | cut -d '.' -f  > ./image/.txt
    num=$(tail ./image/.txt -n )
    echo "$num"
    num=$(($num+))
    echo "$num"
}
move (){
    file_name
    mv ./image/.yuv ./image/"$num".yuv
}
move