table of contents
UUIDD(8) | System Administration | UUIDD(8) |
NAME¶
uuidd - UUID generation daemon
SYNOPSIS¶
uuidd [options]
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¶
-C, --cont-clock[=time]
The option -C or --cont-clock enables the feature with a default max_clock_offset of 2 hours.
The option -C<NUM>[hd] or --cont-clock=<NUM>[hd] enables the feature with a max_clock_offset of NUM seconds. In case of an appended h or d, the NUM value is read in hours or days. The minimum value is 60 seconds, the maximum value is 365 days.
-d, --debug
-F, --no-fork
-k, --kill
-n, --uuids number
-P, --no-pid
-p, --pid path
-q, --quiet
-r, --random
-S, --socket-activation
-s, --socket path
-T, --timeout number
-t, --time
-h, --help
-V, --version
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
AUTHOR¶
The uuidd daemon was written by Theodore Ts’o <tytso@mit.edu>.
SEE ALSO¶
REPORTING BUGS¶
For bug reports, use the issue tracker at <https://github.com/util-linux/util-linux/issues>.
AVAILABILITY¶
The uuidd command is part of the util-linux package which can be downloaded from Linux Kernel Archive <https://www.kernel.org/pub/linux/utils/util-linux/>.
2024-07-04 | util-linux 2.40.2 |