mknod (1)

Quick Reference

Create block or character device special files.

  • Create a block device:

sudo mknod {{path/to/device_file}} b {{major_device_number}} {{minor_device_number}}

  • Create a character device:

sudo mknod {{path/to/device_file}} c {{major_device_number}} {{minor_device_number}}

  • Create a FIFO (queue) device:

sudo mknod {{path/to/device_file}} p

  • Create a device file with default SELinux security context:

sudo mknod -Z {{path/to/device_file}} {{type}} {{major_device_number}} {{minor_device_number}}

NAME

mknod - make block or character special files

SYNOPSIS

mknod [ OPTION]... NAME TYPE [MAJOR MINOR]

DESCRIPTION

Create the special file NAME of the given TYPE.
Mandatory arguments to long options are mandatory for short options too.
-m, --mode=MODE
set file permission bits to MODE, not a=rw - umask
-Z
set the SELinux security context to default type
--context[=CTX]
like -Z, or if CTX is specified then set the SELinux or SMACK security context to CTX
--help
display this help and exit
--version
output version information and exit
Both MAJOR and MINOR must be specified when TYPE is b, c, or u, and they must be omitted when TYPE is p. If MAJOR or MINOR begins with 0x or 0X, it is interpreted as hexadecimal; otherwise, if it begins with 0, as octal; otherwise, as decimal. TYPE may be:
b
create a block (buffered) special file
c, u
create a character (unbuffered) special file
p
create a FIFO
NOTE: your shell may have its own version of mknod, which usually supersedes the version described here. Please refer to your shell's documentation for details about the options it supports.

AUTHOR

Written by David MacKenzie.

REPORTING BUGS

GNU coreutils online help: <https://www.gnu.org/software/coreutils/>
 
Report mknod translation bugs to <https://translationproject.org/team/>

SEE ALSO

mknod(2)
Full documentation at: <https://www.gnu.org/software/coreutils/mknod>
 
or available locally via: info '(coreutils) mknod invocation'

Information

Source
Coreutils
OS/version
GNU coreutils 8.29.13-0a854
Source updated
December 2, 2018
Page created
February 9, 2018
Page generated
December 2, 2018