Find the usb device in linux

Как в Linux посмотреть подключенные USB устройства

В настоящее время многие компьютерные периферийные устройства, такие как веб-камеры, мыши, сканеры, принтеры, жесткие диски, USB (Pendrive) подключаются по USB. После того, как эти устройства подключены к рабочему столу или серверу, важно знать имя устройства или путь к нему. Это помогает идентифицировать USB устройства для таких задач, как форматирование или отключение.

В Linux все файлы устройств хранятся в каталоге /dev и должны быть доступны во время загрузки системы.

В этой статье я покажу вам различные способы как в ubuntu посмотреть usb устройства. Большинство команд, упомянутых здесь, должны работать практически на всех дистрибутивах Linux. Например Ubuntu, Debian, Mint.

Просмотр списка имен USB устройств с помощью команды df

Команда df — это полезная команда, которая может помочь составить список всех подключенных томов, включая USB-накопители.

Как только USB-устройство подключается в систему Linux, это устройство автоматически монтируется в раздел /media и становится готовым к использованию.

Из приведенного выше вывода следует, что у меня есть 1 USB-накопитель /dev/sdb с 2 разделами /dev/sdb1 и /dev/sdb2

Список имен подключенных USB — устройств с помощью команды lsblk

Команда Lsblk используется для перечисления всех блочных устройств в системе Linux. Из списка можно фильтровать USB-устройства с помощью команды grep.

Чтобы получить дополнительную информацию, такую как UUID, производитель и тип файловой системы, используйте команду blkid, как показано на рисунке ниже.

Список USB — устройств с помощью команды fdisk

Вы можете использовать старую добрую команду fdisk, которая используется для разбиения томов на разделы, чтобы перечислить все разделы в системе Linux, включая USB-накопители.

Запятая будет отображать подробную информацию о вашем USB-томе, включая разделы , размер тома, секторы и тип файловой системы.

Список сведений о подключенных USB-устройствах с помощью команды lsusb

Команда lsusb, также известная как команда “List USB”, используется в Linux для перечисления всех USB-устройств, подключенных к системе.

На выводе выше отображается идентификатор шины, идентификатор устройства, идентификатор USB, а также поставщик или производитель USB-устройств

Команда lsusb перечисляет подключенные устройства и не предоставляет дополнительной информации о USB-устройствах.

Для получения дополнительной информации о подключенных USB устройствах используйте команду dmesg. Команда dmesg, также известная как “сообщение драйвера” или “показать сообщение”, используется для проверки загрузочных сообщений. Кроме того, эта команда используется для отладки проблем, связанных с оборудованием и печати сообщений, генерируемых драйверами устройств.

Вы можете использовать команду dmesg и grep, чтобы сузиться до USB-устройств.

Кроме того, вы можете передать вывод команды dmesg в less для облегчения прокрутки.

На выходе вы можете найти определенную строку, нажав клавишу прямой косой черты ( / ) на клавиатуре, а затем имя или идентификатор устройства USB-устройства.

В моем случае я ищу дополнительную информацию о USB устройстве под названием SanDisk.

Поиск USB-накопителя

Список USB контроллеров и устройств, использующих USB устройства

Команда usb-devices-это сценарий оболочки, который позволяет вам перечислить все USB-контроллеры и USB-устройства, подключенные к вашему компьютеру. Он печатает детали USB-устройства, такие как производитель, название продукта, серийный номер и многое другое. Вот вывод команды:

Заключение

В этой статье мы продемонстрировали различные способы просмотра USB-устройств, подключенных к системе Linux.

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How to List USB Devices in Linux

Nowadays, many computer peripherals such as webcams, mice, scanners, printers, hard drives, USB (Pendrive) now come as USB devices. Once these devices are connected to the Desktop or server it’s important to know the device name or device path. This helps to identify USB devices for the tasks such as formatting.

In Linux, all device files are stored in /dev directory and must be available to the OS during the system boot.

In this tutorial, I will show you the various ways to list USB devices on Linux. Most commands mentioned here should work on all Linux distributions.

List USB Device Names Using df Command

The df command is a useful command that can help list all mounted volumes, including your USB drives.

Once a USB device is plugged into a Linux system especially for Desktop, it is automatically mounted in the /media partition and becomes ready for use.

From the output above, I have 1 USB drive /dev/sdb with 2 partitions /dev/sdb1 and /dev/sdb2

List USB Device Name using lsblk Command

Lsblk command is used to list all block devices on a Linux system. From the list, you can filter USB devices using the grep command.

To retrieve additional information such as the UUID, manufacturer and filesystem type, use the blkid command as shown.

List USB Device Names Using fdisk Command

You can use the good old fdisk command that is used for partitioning volumes to list all the partitions on the Linux system, including the USB drives.

The comman will display detailed information about your USB volume including the partitions, size of the volume , sectors and the filesystem type.

List USB Devices Details using lsusb Command

The lsusb command, also known as the “List USB” command, is used in Linux to list all the USB devices attached to the system.

The output above displays the Bus ID, Device ID, USB ID, and the vendor or manufacturer of the USB devices

The lsusb command simply lists the connected devices and does not provide further information about the usb devices.

For more information about the attached USB devices use the dmesg command. The dmesg command also known as “driver message” or “display the message” is used for examining the boot messages. Additionally, it is used for debugging hardware-related issues and printing messages generated by device drivers.

You can use the dmesg command and grep to narrow down to USB devices.

Also, you can pipe the output of dmesg command to less for easier scrolling.

On the output, you can search for a specific string by pressing the forward slash key ( / ) on your keyboard followed by the name or Device ID of the USB device.

In my case, I’m searching for more information regarding a USB device called SanDisk, which is actually my removable pen drive.

List USB controllers and devices using usb-devices

The usb-devices command is a shell script that allows you to list all the USB controllers and the USB devices connected to your PC. It prints out details of the USB device such as the manufacturer, product name, serial number, and so much more. Here’s the output of the command:

usb-devices command to list usb devices

Conclusion

In this tutorial, we have demonstrated different ways to list the USB devices attached to the Linux system.

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4 Useful Way to Know Plugged USB Device Name in Linux

As a newbie, one of the many things you should master in Linux is identification of devices attached to your system. It may be your computer’s hard disk, an external hard drive or removable media such USB drive or SD Memory card.

Using USB drives for file transfer is so common today, and for those (new Linux users) who prefer to use the command line, learning the different ways to identify a USB device name is very important, when you need to format it.

Once you attach a device to your system such as a USB, especially on a desktop, it is automatically mounted to a given directory, normally under /media/username/device-label and you can then access the files in it from that directory. However, this is not the case with a server where you have to manually mount a device and specify its mount point.

Linux identifies devices using special device files stored in /dev directory. Some of the files you will find in this directory include /dev/sda or /dev/hda which represents your first master drive, each partition will be represented by a number such as /dev/sda1 or /dev/hda1 for the first partition and so on.

List All Linux Device Names

Now let’s find out device names using some different command-line tools as shown:

Find Out Plugged USB Device Name Using df Command

To view each device attached to your system as well as its mount point, you can use the df command (checks Linux disk space utilization) as shown in the image below:

Find USB Device Name Using df Command

Use lsblk Command to Find USB Device Name

You can also use the lsblk command (list block devices) which lists all block devices attached to your system like so:

List Linux Block Devices

Identify USB Device Name with fdisk Utility

fdisk is a powerful utility which prints out the partition table on all your block devices, a USB drive inclusive, you can run it will root privileges as follows:

List Partition Table of Block Devices

Determine USB Device Name with dmesg Command

dmesg is an important command that prints or controls the kernel ring buffer, a data structure which stores information about the kernel’s operations.

Run the command below to view kernel operation messages which will as well print information about your USB device:

dmesg – Prints USB Device Name

That is all for now, in this article, we have covered different approaches of how to find out a USB device name from the command line. You can also share with us any other methods for the same purpose or perhaps offer us your thoughts about the article via the response section below.

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Find USB device details in Linux/Unix using lsusb command

Today we will see how to list USB devices in Linux and their properties such as speed, BUS, class, type details etc. This is part of our on going hardware detection series. We already covered following stuff.

What is USB?

USB( Universal Serial Bus) is a stranded developed to replace different types of BUS’s available. This is a solution devices to eliminate vendor lock-down of hardware ports, so that BUS’s will be identical across different devices from different vendors. USB devices solve one more problem i.e. speeds. USB devices can reach up 5GB/s as of this writing where as PCI and serial devices have less speeds. Depending of USB firmware, it’s categorize in to USB 1.0, USB 2.0, USB 3.0. USB have competitor in the from of Thunderbolt interface.

As a Linux User/administrator we should know USB bus details as well as devices connected. In this post we will see how to use lsusb command to display different USB properties.

Learn lsusb command with examples

Example 1: List all the USB ports available

Let us try to understand above output in detail.

Bus 002 Device 003 : ID 0781:5567 SanDisk Corp. Cruzer Blade

Bus 002 : This is bus number where SanDisk USB stick is attached.

Device 003 : This is the third device attached to bus 002, the other two devices are “Linux Foundation 2.0 root hub” and ” Intel Corp. Integrated Rate Matching Hub”

ID 0781:5567 is the number given to this SanDisk, The number before : indicates the manufacture ID and number after : indicates device ID. To get more info on this visit Linux-USB site.

SanDisk Corp. Cruzer Blade is the name of manufacture and device name.

Example 2: Check how many USB ports available in your machine so that we can connect USB devices to these ports.

These ports may be internal or external to the system.

Example : Get detailed information of a USB device connected to a machine. Suppose I want to see information about /dev/bus/usb/002/005 device use below command

Output:

To know each of these types, click here.

Example 3: Get all the USB ports available and devices connected using verbose mode.

Example 4: List all mass storage devices in your system.

From the above output we can find that there are total three USB storage devices present on the machine.

Example 5: Find USB devices protocol version.

Depending on the version, the speed varies. Below table give you clear idea about the speeds associated with these versions.

USB 1.10	12Mb/s
USB 2.00	480Mb/s
USB 3.00	5Gb/s

Example 6: Find USB device supported speeds by using tree structure option

In our next post we will see other hardware device properties.

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