linux use command line to re-scan usb drive

usbreset.c

/* usbreset -- reset  a USB device */
/*
$ gcc usbreset.c -o usbreset
$ sudo mv usbreset /usr/local/bin/
$ lsusb
  Bus 001 Device 004: ID .....
$ sudo usbreset /dev/bus/usb/001/004
*/

#include <stdio.h>
#include <unistd.h>
#include <fcntl.h>
#include <errno.h>
#include <sys/ioctl.h>

#include <linux/usbdevice_fs.h>

int main(int argc, char *argv[])
{
    if (argc != 2) {

fprintf(stderr, "Usage: usbreset device-filename\n");
fprintf(stderr,"\
$ lsusb\n\
  Bus 001 Device 004: ID .....\n\
$ sudo usbreset /dev/bus/usb/001/004\n\
");
        return 1;
    }

    const char *filename = argv[1];

    int fd = open(filename, O_WRONLY);
    if (fd < 0) {
        perror("Error opening output file");
        return 1;
    }

    printf("Resetting USB device %s\n", filename);
    int rc = ioctl(fd, USBDEVFS_RESET, 0);
    if (rc < 0) {
        perror("Error in ioctl");
        return 1;
    }
    printf("Reset successful\n");

    close(fd);
    return 0;
}