from small one page howto to huge articles all in one place
poll results
Last additions:
May 25th. 2007:
April, 26th. 2006:
| 
MCOOKIE
Section: User Commands (1) Updated: December 2014 Index
Return to Main Contents
NAME
mcookie - generate magic cookies for xauth
SYNOPSIS
mcookie
[options]
DESCRIPTION
mcookie
generates a 128-bit random hexadecimal number for use with the X authority
system. Typical usage:
-
xauth add :0 . `mcookie`
The "random" number generated is actually the MD5 message
digest of random information coming from one of the sources
/dev/urandom,
/dev/random,
or the
libc pseudo-random functions,
in this preference order.
OPTIONS
- -f, --file file
-
Use this file as an additional source of randomness.
When file is '-', characters are read from standard input.
- -m, --max-size number
-
Read from file only this number of bytes.
This option is meant to be used when reading additional
randomness from a file or device.
-
The
number
argument may be followed by the multiplicative suffixes KiB=1024,
MiB=1024*1024, and so on for GiB, TiB, PiB, EiB, ZiB and YiB (the "iB" is
optional, e.g., "K" has the same meaning as "KiB") or the suffixes
KB=1000, MB=1000*1000, and so on for GB, TB, PB, EB, ZB and YB.
- -v, --verbose
-
Inform where randomness originated, with amount of entropy read from each
source.
- -V, --version
-
Display version information and exit.
- -h, --help
-
Display help text and exit.
BUGS
It is assumed that none of the randomness sources will block.
FILES
/dev/urandom
/dev/random
SEE ALSO
md5sum(1),
X(1),
xauth(1),
rand(3)
AVAILABILITY
The mcookie command is part of the util-linux package and is available from
Linux Kernel Archive
Index
- NAME
-
- SYNOPSIS
-
- DESCRIPTION
-
- OPTIONS
-
- BUGS
-
- FILES
-
- SEE ALSO
-
- AVAILABILITY
-
| 
|
|
- Running on 
-
:
: 