Man page of mknod
Section: Maintenance Commands (8)
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mknod - Creates a special file
/usr/sbin/mknod special_file [ b major_device# minor_device# | c major_device# minor_device#]
/usr/sbin/mknod filename p
command makes a directory entry.
The first argument is the name of the
special device file.
Select a name that is descriptive of the device.
command has two forms.
In the first form, the second argument is the b or c
The last two arguments are numbers specifying the
which helps the operating system find the device driver code,
the unit drive, or line
number, which may be either decimal or octal.
The assignment of major device numbers is specific to each system.
You can determine the device numbers by examining the
system source file.
If you change the contents of the
to add a device driver, you must rebuild the kernel.
In the second form of
flag to create named pipes (FIFOs).
Only the superuser can create a character or device special file.
Indicates that the special file
corresponds to a block-oriented device (disk or tape)
Indicates that the special file corresponds to a character-oriented device
Creates named pipes (FIFOs)
To create the special file for a new drive, /dev/ra2,
with a major device number of 1
and a minor device number of 2, enter:
mknod /dev/ra2 b 1 2
This command creates the special file, /dev/ra2,
which is a
block special file with major device number 1 and
minor device number 2.
To create a pipe named fifo, enter:
mknod fifo p
This command creates the pipe fifo, which is not necessarily in the
Specifies the command path
Specifies the system device numbers specification file
This document was created by
using the manual pages.
Time: 02:40:29 GMT, October 02, 2010