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GNU coreutils 8.32
March 2020


The basic file, shell and text manipulation utilities of the GNU operating system


coreutils common optional components


Documentation for the GNU Core Utilities


mknod - make block or character special files


mknod [\,OPTION\/]... \,NAME TYPE \/[\,MAJOR MINOR\/]


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
like -Z, or if CTX is specified then set the SELinux or SMACK security context to CTX
--help display this help and exit
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.


Written by David MacKenzie.


GNU coreutils online help: <>
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Copyright © 2020 Free Software Foundation, Inc. License GPLv3+: GNU GPL version 3 or later <>.
This is free software: you are free to change and redistribute it. There is NO WARRANTY, to the extent permitted by law.


Full documentation <>
or available locally via: info \(aq(coreutils) mknod invocation\(aq
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