#include <stdio.h>
#include <unistd.h>
#include <stdlib.h>
#include <string.h>
#include <sys/types.h>
#include <sys/wait.h>

int main() {
    char command[256];
    printf(“Введите команду (или ‘exit’ для выхода)”);

    while (1) {
        printf("Command: ('exit' to quit): ");
        if (fgets(command, sizeof(command), stdin) == NULL) {
            perror("Input error");
            exit(1);
        }
        command[strcspn(command, "\n")] = '\0';
        if (strcmp(command, "exit") == 0) {
            break;
        }

        pid_t pid = fork();

        if (pid < 0) {
            perror("Fork error");
            exit(1);
        }
        if (pid == 0) {
            char *args[256];
            int i = 0;
            char *token = strtok(command, " ");
            while (token != NULL) {
                args[i++] = token;
                token = strtok(NULL, " ");
            }
            args[i] = NULL;

            if (execvp(args[0], args) == -1) {
                perror("execvp error");
                exit(1);
            }
        } else {
            wait(NULL);
        }
    }
    printf("Exit.\n");
    return 0;
}