From 30ff6afe596eddafacf22b1a5b2d1a3d6254ea15 Mon Sep 17 00:00:00 2001 From: Daniel Baumann Date: Sat, 27 Apr 2024 15:14:44 +0200 Subject: Adding upstream version 2.36.1. Signed-off-by: Daniel Baumann --- misc-utils/mcookie.1 | 69 ++++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 69 insertions(+) create mode 100644 misc-utils/mcookie.1 (limited to 'misc-utils/mcookie.1') diff --git a/misc-utils/mcookie.1 b/misc-utils/mcookie.1 new file mode 100644 index 0000000..fcb37ed --- /dev/null +++ b/misc-utils/mcookie.1 @@ -0,0 +1,69 @@ +.\" mcookie.1 -- +.\" Public Domain 1995 Rickard E. Faith (faith@cs.unc.edu) +.TH MCOOKIE 1 "December 2014" "util-linux" "User Commands" +.SH NAME +mcookie \- generate magic cookies for xauth +.SH SYNOPSIS +.B mcookie +[options] +.SH DESCRIPTION +.B mcookie +generates a 128-bit random hexadecimal number for use with the X authority +system. Typical usage: +.sp +.RS +.B xauth add :0 . `mcookie` +.RE +.PP +The "random" number generated is actually the MD5 message +digest of random information coming from one of the sources +.IR getrandom () +system call, +.IR /dev/urandom , +.IR /dev/random , +or the +.IR "libc pseudo-random functions" , +in this preference order. See also the option \fB\-\-file\fR. +.SH OPTIONS +.TP +.BR \-f , " \-\-file " \fIfile +Use this \fIfile\fR as an additional source of randomness (for example /dev/urandom). +When \fIfile\fR is '-', characters are read from standard input. +.TP +.BR \-m , " \-\-max\-size " \fInumber +Read from \fIfile\fR only this \fInumber\fR of bytes. +This option is meant to be used when reading additional +randomness from a file or device. +.IP +The +.I 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. +.TP +.BR \-v , " \-\-verbose" +Inform where randomness originated, with amount of entropy read from each +source. +.TP +.BR \-V , " \-\-version" +Display version information and exit. +.TP +.BR \-h , " \-\-help" +Display help text and exit. +.SH FILES +.I /dev/urandom +.br +.I /dev/random +.SH BUGS +It is assumed that none of the randomness sources will block. +.SH SEE ALSO +.BR md5sum (1), +.BR X (7), +.BR xauth (1), +.BR rand (3) +.SH AVAILABILITY +The mcookie command is part of the util-linux package and is available from +.UR https://\:www.kernel.org\:/pub\:/linux\:/utils\:/util-linux/ +Linux Kernel Archive +.UE . -- cgit v1.2.3