UUID (Universally Unique Identifier) is a 128-bit number that often represented as a hexadecimal string. It can be used for uniquely identifying objects. The uuidgen is a command line tool for generating UUID. This tutorial shows how to install and use uuidgen on Ubuntu 22.04.
Install uuidgen
Update the package lists:
sudo apt update
The uuidgen is available in uuid-runtime
package. Install it using the following command:
sudo apt install -y uuid-runtime
We can check uuidgen version:
uuidgen --version
Testing uuidgen
There are several versions of UUIDs. UUID Version 1 is based on time and MAC address. To generate it, use -t
option:
uuidgen -t
Output example:
22ebab0a-28cf-11ed-aca8-613a5bf43b26
UUID Version 4 can be generated with -r
option:
uuidgen -r
Uninstall uuidgen
To completely remove uuidgen, run the following command:
sudo apt purge --autoremove -y uuid-runtime
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