tai64n - puts a precise timestamp on each line.
reads lines from stdin. For each line, it writes
- an @,
- a precise timestamp,
- a space, and
- 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 used by tai64n
are 12-byte TAI64N labels in external TAI64N
format, printed as 24 lowercase hexadecimal characters. You can use
(8) to convert the timestamps to a human-readable format.
For example, the timestamp 4000000037c219bf2ef02e94 refers to the nanosecond
beginning exactly 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 return 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.
exits 0 when it sees end of input. It exits 111 without an error
message if it has trouble reading stdin or writing stdout.
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)