1UUID_TIME(3) Programmer's Manual UUID_TIME(3)
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6 uuid_time - extract the time at which the UUID was created
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9 #include <uuid.h>
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11 time_t uuid_time(uuid_t uu, struct timeval *ret_tv)
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14 The uuid_time() function extracts the time at which the supplied
15 time-based UUID uu was created. Note that the UUID creation time is
16 only encoded within certain types of UUIDs. This function can only
17 reasonably expect to extract the creation time for UUIDs created with
18 the uuid_generate_time(3) and uuid_generate_time_safe(3) functions. It
19 may or may not work with UUIDs created by other mechanisms.
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22 The time at which the UUID was created, in seconds since January 1,
23 1970 GMT (the epoch), is returned (see time(2)). The time at which the
24 UUID was created, in seconds and microseconds since the epoch, is also
25 stored in the location pointed to by ret_tv (see gettimeofday(2)).
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28 Theodore Y. Ts’o
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31 uuid(3), uuid_clear(3), uuid_compare(3), uuid_copy(3),
32 uuid_generate(3), uuid_is_null(3), uuid_parse(3), uuid_unparse(3)
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35 For bug reports, use the issue tracker at
36 https://github.com/karelzak/util-linux/issues.
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39 The libuuid library is part of the util-linux package since version
40 2.15.1. It can be downloaded from Linux Kernel Archive
41 <https://www.kernel.org/pub/linux/utils/util-linux/>.
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45util-linux 2.37.2 2021-06-02 UUID_TIME(3)