How Linux users access USB devices using libusb

Let guest identify USB devices
1. The simplest method is as follows:
$ Sudo gedit/etc/fstab
Add
# The USB Group
# Enable read and write permissions on USB devices for all users
None/proc/bus/USB usbfs devmode = 666 0 0
Then, the general user can use the USB device through libusb.

 

2. However, it is not safe to open the read and write permissions of USB devices to all users in some cases. A more secure approach is:
1. added the user group usbfs.
$ Sudo groupadd usbfs
2. view the GID of the usb fs User Group
$ CAT/etc/group | grep usbfs
Usb fs: X: 1002:
3. Add the current user to the usb fs group
$ Sudo gedit/etc/group
Set
Usb fs: X: 1002:
Change
Usbfs: X: 1002: joson
4. Reset the permission for the USB device to edit the/etc/fstab file and add the following two lines. Note that your GID may not be 1002
$ Sudo gedit/etc/fstab
Add
#1002 is the USB group ID
None/proc/bus/USB usbfs devgid = 1002, devmode = 664 0 0
5. After restarting, you should be able to use the USB device in the client.
Note: Before using a USB device in the client, uninstall the device on the host.