Read()

 #include <stdio.h>

#include <stdlib.h>

#include <fcntl.h>

main(int argc, char *argv[])

{

int fd,i;

char buf[100];if (argc < 2)

{

printf("Usage: ./a.out <filename>\n");exit(-1);

}

fd = open(argv[1], O_RDONLY);if(fd == -1)

{

printf("%s file does not exist\n", argv[1]);exit(-1);

}

printf("Contents of the file %s is : \n", argv[1]);while(read(fd, buf, sizeof(buf)) > 0)

printf("%s", buf);

close(fd);

}

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