int __cd(Tokens tokens) {
    // cd at background is neglected
    if (tokens.background) return 1;

    // get the home directory path using the user_id
    uid_t uid = getuid();
    struct passwd *pw = getpwuid(uid);

    char **args = tokens.args;

    if (args[1] == NULL || strcmp(args[1], "~") == 0) {
        chdir(pw->pw_dir);
    } else {
        if (chdir(args[1]) != 0) {
            perror("hs-shell");
        }
    }
    return 1;
}