Generate a random UUID v4 (Universally Unique Identifier).
Code
Utilitiescat /proc/sys/kernel/random/uuid 2>/dev/null || uuidgenServer
More Bash Snippets
Generate UUID v1
Generate a time-based UUID v1 using timestamp and random node ID.
Generate UUID v3
Generate a name-based UUID v3 using MD5 hashing of namespace and name.
Generate UUID v5
Generate a name-based UUID v5 using SHA-1 hashing of namespace and name.
Generate UUID v6
Generate a reordered time-based UUID v6 with improved sortability for databases.
Generate UUID v7
Generate a Unix timestamp-based UUID v7 with millisecond precision, ideal for database primary keys.
Array Difference
Find elements in the first array that are not present in the second array.