Linux Command - uuidgen
uuidgen - create a new UUID value
The UUID is printed to standard output as a hyphen-punctuated ASCII string of the form: EEF45689-BBE5-4FB6-9E80-41B78F6578E2 (in printf(3) format “%08X-%04X-%04X-%04X-%012X”), unless the -hdr option is given, in which case a fragment of source code is output.
The length of a UUID (Universally Unique Identifier) generated by uuidgen is 36 characters. A UUID is typically represented as a 32-character hexadecimal number, separated by hyphens into five groups
It looks like this:
1 | xxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx |
Here, each ‘x’ represents a hexadecimal digit(0-9 or a-f). The hyphens are included for readability and are not part of the hexadecimal value. The total length, including hyphens, is 36 characters.
Syntax
1 | uuid [OPTION] |
Options
| Option | Description |
|---|---|
| -h, –help | Display help and exit |
Example
Generate a random-based UUID
1 | uuidgen |
sample output
1 | 72FFB2C4-78F0-49B6-82B9-3F807C994FFD |