lseek

PHOTO EMBED

Fri Jun 07 2024 04:52:04 GMT+0000 (Coordinated Universal Time)

Saved by @prabhas 

#include <stdio.h>
#include <stdlib.h>
#include <fcntl.h>
#include <unistd.h>

int main() {
    int file;
    off_t offset;
    char buffer[20];

    // Open file
    file = open("file.txt", O_RDONLY);
    if (file == -1) {
        perror("Error opening file");
        exit(EXIT_FAILURE);
    }

    // Move file offset to 10 bytes from the beginning
    offset = lseek(file, 10, SEEK_SET);
    if (offset == -1) {
        perror("Error seeking in file");
        close(file);
        exit(EXIT_FAILURE);
    }

    // Read from the new offset
    if (read(file, buffer, 20) == -1) {
        perror("Error reading from file");
        close(file);
        exit(EXIT_FAILURE);
    }

    // Print the read content
    printf("Read content: %.*s\n", 20, buffer);

    // Close file
    close(file);

    return 0;
}
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