You Asked: What Is Character Driver in Linux?

A character device driver is one that transfers data directly to and from a user process.

What is a character driver?

Character device drivers normally perform I/O in a byte stream. Examples of devices using character drivers include tape drives and serial ports. Character device drivers can also provide additional interfaces not present in block drivers, such as I/O control (ioctl) commands, memory mapping, and device polling.

What is a character device in Linux?

Character devices are devices that do not have physically addressable storage media, such as tape drives or serial ports, where I/O is normally performed in a byte stream.