/dev is the location of special or device files. It is a very interesting directory that highlights one important aspect of the Linux filesystem – everything is a file or a directory.

What is the dev command?

The dev-make BASIC program adds an entity to the system. This command is normally used to add devices to the system. The most common usage is to create a serial device to be used with the BASIC get and send statements, even if there is no D3 process connected to the device.

What is dev full used for?

In Linux, FreeBSD, NetBSD /dev/full or the always full device is a special file that always returns the error code ENOSPC (meaning “No space left on device”) on writing, and provides an infinite number of zero bytes to any process that reads from it (similar to /dev/zero).