SD_ID128_RANDOMIZE(3)

  .SH "NAME" sd_id128_randomize - Generate 128-bit IDs
  .SH "SYNOPSIS"

#include <systemd/sd-id128.h>

      .HP u int sd_id128_randomize(sd_id128_t *ret);

  .SH "DESCRIPTION"

    .PP sd_id128_randomize() generates a new randomized 128-bit ID and returns it in ret. Every invocation returns a new randomly generated ID. This uses the /dev/urandom kernel random number generator.
    .PP Note that sd_id128_randomize() always returns a UUID v4-compatible ID.
    .PP For more information about the sd_id128_t type, see sd-id128(3).
    .PP journalctl(1)'s --new-id128 option may be used as a command line front-end for sd_id128_randomize().

  .SH "RETURN VALUE"

    .PP The call returns 0 on success (in which case ret is filled in), or a negative errno-style error code.

  .SH "NOTES"

    .PP The sd_id128_randomize() interface is available as a shared library, which can be compiled and linked to with the libsystemd pkg-config(1) file.

  .SH "SEE ALSO"

    .PP systemd(1), sd-id128(3), machine-id(5), random(4), sd_id128_get_machine(3)