program for cat command

Aim: Write a program for cat command.

Program:

#include<stdio.h>

#include<fcntl.h>

#define buf 2048

int main(int argc, char *argv[])

{

          int fd;

          char buf1[buf];

          fd=open(argv[1],O_RDWR);

          read(fd,buf1,buf);

          printf(“%s”,buf1);

}

Output:

$ cc cat.c

$ ./a.out cat.txt