uuid
Generate universally unique identifiers
TLDR
TLDR
Generate UUIDv1
$ uuid
Generate UUIDv4$ uuid -v 4
Generate multiple UUIDs$ uuid -v 4 -n [number_of_uuids]
Specify output format$ uuid -v 4 -F [BIN|STR|SIV]
Write to file$ uuid -v 4 -o [path/to/file]
Generate UUIDv5 with namespace$ uuid -v 5 ns:[DNS|URL|OID|X500] [object_name]
Decode UUID$ uuid -d [uuid]
SYNOPSIS
uuid [OPTIONS]
DESCRIPTION
uuid generates and decodes Universally Unique Identifiers. It supports multiple UUID versions: v1 (time-based), v3 (MD5 hash), v4 (random), and v5 (SHA-1 hash).
UUIDs are 128-bit identifiers used for uniquely identifying information across distributed systems.
PARAMETERS
-v VERSION
UUID version (1, 3, 4, or 5)-n COUNT
Generate multiple UUIDs-F FORMAT
Output format (BIN, STR, or SIV)-o FILE
Write output to filens: NAMESPACE
Namespace prefix for v3/v5-d
Decode UUID
CAVEATS
UUIDv1 may expose system information. UUIDv4 requires good random source. Namespace UUIDs require object name specification.