man > tai64n(8)

tai64n(8)                              System Manager's Manual                             tai64n(8)

NAME
       tai64n - puts a precise timestamp on each line.

SYNOPSIS
       tai64n

DESCRIPTION
       tai64n reads lines from stdin. For each line, it writes

       1      an @,

       2.     a precise timestamp,

       3.     a space, and

       4.     a copy of the input line

              to  stdout. The timestamp indicates the moment that tai64n read the first character of
              the line.

              tai64n does not allocate any memory after it starts.

TIMESTAMPS
       Timestamps used by tai64n are 12-byte TAI64N labels in external TAI64N format, printed as  24
       lowercase  hexadecimal  characters. You can use tai64nlocal(8) to convert the timestamps to a
       human-readable format.

       For example, the timestamp 4000000037c219bf2ef02e94 refers to the  nanosecond  beginning  ex‐
       actly  935467455.787492500  seconds  after the beginning of 1970 TAI; 37c219bf hexadecimal is
       935467455, and 2ef02e94 hexadecimal is 787492500.

       The current implementation of tai64n relies on the UNIX gettimeofday library routine  to  re‐
       turn the current time as the number of TAI seconds since 1970-01-01 00:00:10 TAI. Beware that
       most  gettimeofday  implementations are not Y2038-compliant. Furthermore, most clocks are not
       set accurately.

EXIT CODES
       tai64n exits 0 when it sees end of input. It exits 111 without an error  message  if  it  has
       trouble reading stdin or writing stdout.

SEE ALSO
       supervise(8),   svc(8),   svok(8),  svstat(8),  svscanboot(8),  svscan(8),  readproctitle(8),
       fghack(8), pgrphack(8), multilog(8), tai64nlocal(8), setuidgid(8),  envuidgid(8),  envdir(8),
       softlimit(8), setlock(8)

       http://cr.yp.to/daemontools.html

                                                                                           tai64n(8)