uuidgen MacOS Command Guide
The MacOS uuidgen command generates and prints a unique identifier using the UUID library. This command creates a new universally unique identifier (UUID) in a standard format. UUIDs are 128-bit numbers that guarantee uniqueness across space and time. The generated UUIDs can be useful in various scenarios, such as generating unique file names, database keys, or tracking unique items. The uuidgen command on MacOS allows for easy generation of UUIDs without the need for external libraries or tools.
uuidgen Syntax:
Section titled “uuidgen Syntax:”uuidgenOptions:
Section titled “Options:”| Option | Description |
|---|---|
| -hdr | Print UUID in human-readable form. |
| -t time | Generate time-based UUID. |
| -s | Generate random-based UUID. |
| -n ns | Generate name-based UUID (namespace is a UUID). |
Parameters:
Section titled “Parameters:”There are no parameters for the uuidgen command.
uuidgen Command Samples:
Section titled “uuidgen Command Samples:”Generate a random UUID
Section titled “Generate a random UUID”uuidgenGenerates a random UUID.
Generate 5 UUIDs in uppercase
Section titled “Generate 5 UUIDs in uppercase”uuidgen -U -n5Generates 5 random UUIDs in uppercase.
Generate a UUID without hyphens
Section titled “Generate a UUID without hyphens”uuidgen -hGenerates a random UUID without hyphens.
Generate a UUID for use in the Mac OS pasteboard
Section titled “Generate a UUID for use in the Mac OS pasteboard”uuidgen | pbcopyGenerates a random UUID and copies it to the Mac OS pasteboard.
Generate a UUID for use in a filename
Section titled “Generate a UUID for use in a filename”echo "file_$(uuidgen)" > new_file.txtGenerates a random UUID and appends it to a filename.
Generate a UUID using a specified format
Section titled “Generate a UUID using a specified format”uuidgen -F '%A-%B-%C-%D-%E'Generates a random UUID using a user-specified format.
Generate a UUID compatible with RFC4122 version 3
Section titled “Generate a UUID compatible with RFC4122 version 3”uuidgen -rGenerates a UUID that is compatible with RFC4122 version 3.
How do I use uuidgen in MacOS?
Section titled “How do I use uuidgen in MacOS?”To use the uuidgen command in MacOS, execute the following command:
uuidgenWhat is the output format of uuidgen in MacOS?
Section titled “What is the output format of uuidgen in MacOS?”The output format of uuidgen in MacOS is a standard UUID string in the following format:
6B29FC40-CA47-1067-B31D-00DD010662DACan I generate multiple UUIDs at once with uuidgen in MacOS?
Section titled “Can I generate multiple UUIDs at once with uuidgen in MacOS?”Yes, you can generate multiple UUIDs at once with the -n option in uuidgen. For example:
uuidgen -n 5How can I generate a UUID in uppercase format using uuidgen in MacOS?
Section titled “How can I generate a UUID in uppercase format using uuidgen in MacOS?”To generate a UUID in uppercase format, you can use the -U option with uuidgen as shown below:
uuidgen -UIs there a way to generate a UUID without hyphens in MacOS using uuidgen?
Section titled “Is there a way to generate a UUID without hyphens in MacOS using uuidgen?”Yes, you can generate a UUID without hyphens in MacOS by using the -H option with uuidgen. Here’s an example:
uuidgen -HApplications of the uuidgen command
Section titled “Applications of the uuidgen command”- Generating unique identifiers
- Creating universally unique names
- Generating random UUIDs for various purposes