uuidd
UUID generation daemon
see also :
uuidgen
Synopsis
uuidd
[options]
add an example, a script, a trick and tips
examples
no example yet ...
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description
The
uuidd daemon is used by the UUID library to generate
universally unique identifiers (UUIDs), especially
time-based UUIDs, in a secure and guaranteed-unique fashion,
even in the face of large numbers of threads running on
different CPUs trying to grab UUIDs.
options
-d
Run uuidd in debugging mode.
This prevents uuidd from running as a daemon.
-h,
--help
Display help screen and
exit.
-k,
--kill
If currently a uuidd daemon is
running, kill it.
-n,
--uuids number
When issuing a test request to
a running uuidd, request a bulk response of number
UUIDs.
-p,
--pid path
Specify the pathname where the
pid file should be written. By default, the pid file is
written to /var/run/uuidd/uuidd.pid.
-q
Suppress some failure messages.
-r,
--random
Test uuidd by trying to connect
to a running uuidd daemon and request it to return a
random-based UUID.
-s,
--socket path
Specify the pathname used for
the unix-domain socket used by uuidd. By default, the
pathname used is /var/run/uuidd/request. This is primarily
for debugging purposes, since the pathname is hard-coded in
the libuuid library.
-T,
--timeout timeout
Specify a timeout for uuidd. If
specified, then uuidd will exit after timeout seconds
of inactivity.
-t,
--time
Test uuidd by trying to connect
to a running uuidd daemon and request it to return a
time-based UUID.
-V,
--version
Output version information and
exit.
availability
The uuidd daemon is part of the util-linux package and is
available from ftp://ftp.kernel.org/pub/linux/utils/util-linux/.
example
Start up a daemon, print 42 random keys, and then stop the
daemon.
uuidd -p /tmp/uuidd.pid -s /tmp/uuidd.socket
uuidd -d -r -n 42 -s /tmp/uuidd.socket
uuidd -d -k -s /tmp/uuidd.socket
see also
uuid,
uuidgen
author
The
uuidd daemon was written by Theodore Ts’o
<tytso[:at:]mit[:dot:]edu>.