systemd-id128 命令

常用示例

说明

systemd-id128 generates and prints sd-id128 identifiers used by systemd. These 128-bit identifiers uniquely identify machines, boots, and service invocations. The machine ID is persistent across reboots and stored in /etc/machine-id. The boot ID changes each boot and identifies the current system session. The invocation ID is unique per service start.

参数

new

Generate a new random identifier.

machine-id

Print the machine ID from /etc/machine-id.

boot-id

Print the current boot ID.

invocation-id

Print the service invocation ID (systemd services only).

show _NAME_|_UUID_...

Display well-known systemd identifiers.

-u, --uuid

Print in UUID format with hyphen-separated groups.

-p, --pretty

Generate output as programming language snippets.

-P, --value

Only print the identifier value.

-a, --app-specific _APP-ID_

Generate an application-specific ID by hashing the machine or boot ID with the given application ID.

--json=_MODE_

Output in JSON format. MODE is short, pretty, or off.

--no-pager

Disable pager output.

--no-legend

Omit column headers and footer with show command.