Hi Michael
On Sun, Jan 10, 2010 at 12:45 PM, Michael Witten <mfwitten@xxxxxxxxx> wrote:
> All definitions of the Epoch have been refactored to the following:
>
> 1970-01-01 00:00:00 +0000 (UTC)
>
> That form is more consistent, logical, precise, and internationally
> recognizable than the other variants.
>
> Also, some wording has been altered as well.
Thanks! Applied.
Cheers,
Michael
> Signed-off-by: Michael Witten <mfwitten@xxxxxxxxx>
> ---
> man2/stime.2 | 4 ++--
> man2/time.2 | 4 ++--
> man2/utimensat.2 | 6 +++---
> man3/ctime.3 | 3 +--
> man3/difftime.3 | 6 +++---
> man3/ftime.3 | 4 ++--
> man3/getspnam.3 | 4 ++--
> man3/mq_receive.3 | 2 +-
> man3/mq_send.3 | 2 +-
> man3/rtime.3 | 4 ++--
> man3/sem_wait.3 | 2 +-
> man3/strftime.3 | 3 +--
> man3/strptime.3 | 3 +--
> man3/timeradd.3 | 3 +--
> man4/rtc.4 | 2 +-
> man5/core.5 | 2 +-
> man5/proc.5 | 2 +-
> man7/icmp.7 | 2 +-
> man7/time.7 | 2 +-
> 19 files changed, 28 insertions(+), 32 deletions(-)
>
> diff --git a/man2/stime.2 b/man2/stime.2
> index 530d223..534e297 100644
> --- a/man2/stime.2
> +++ b/man2/stime.2
> @@ -45,8 +45,8 @@ _SVID_SOURCE
> .SH DESCRIPTION
> .BR stime ()
> sets the system's idea of the time and date.
> -Time, pointed
> -to by \fIt\fP, is measured in seconds from 00:00:00 UTC January 1, 1970.
> +The time, pointed
> +to by \fIt\fP, is measured in seconds since the Epoch, 1970-01-01 00:00:00 +0000 (UTC).
> .BR stime ()
> may only be executed by the superuser.
> .SH "RETURN VALUE"
> diff --git a/man2/time.2 b/man2/time.2
> index 5fae9d9..c4b7679 100644
> --- a/man2/time.2
> +++ b/man2/time.2
> @@ -35,8 +35,8 @@ time \- get time in seconds
> .BI "time_t time(time_t *" t );
> .SH DESCRIPTION
> .BR time ()
> -returns the time since the Epoch
> -(00:00:00 UTC, January 1, 1970), measured in seconds.
> +returns the time as the number of seconds since the Epoch,
> +1970-01-01 00:00:00 +0000 (UTC).
>
> If
> .I t
> diff --git a/man2/utimensat.2 b/man2/utimensat.2
> index a87e66e..76725b2 100644
> --- a/man2/utimensat.2
> +++ b/man2/utimensat.2
> @@ -78,9 +78,9 @@ specifies the new "last access time" (\fIatime\fP);
> specifies the new "last modification time" (\fImtime\fP).
> Each of the elements of
> .I times
> -specifies a time in seconds and nanoseconds
> -since the Epoch (00:00:00, 1 Jan 1970, UTC),
> -in a structure of the following form:
> +specifies a time as the the number of seconds and nanoseconds
> +since the Epoch, 1970-01-01 00:00:00 +0000 (UTC).
> +This information is conveyed in a structure of the following form:
> .in +4n
> .nf
>
> diff --git a/man3/ctime.3 b/man3/ctime.3
> index 75e2f76..132c364 100644
> --- a/man3/ctime.3
> +++ b/man3/ctime.3
> @@ -78,8 +78,7 @@ and
> functions all take
> an argument of data type \fItime_t\fP which represents calendar time.
> When interpreted as an absolute time value, it represents the number of
> -seconds elapsed since 00:00:00 on January 1, 1970, Coordinated Universal
> -Time (UTC).
> +seconds elapsed since the Epoch, 1970-01-01 00:00:00 +0000 (UTC).
> .PP
> The
> .BR asctime ()
> diff --git a/man3/difftime.3 b/man3/difftime.3
> index 5567751..79887b1 100644
> --- a/man3/difftime.3
> +++ b/man3/difftime.3
> @@ -40,9 +40,9 @@ The
> function returns the number of seconds elapsed
> between time \fItime1\fP and time \fItime0\fP, represented as a
> .IR double .
> -The two times are specified in calendar time, which represents the time
> -elapsed since the Epoch
> -(00:00:00 on January 1, 1970, Coordinated Universal Time (UTC)).
> +Each of the times is specified in calendar time, which means its
> +value is a measurement (in seconds) relative to the Epoch,
> +1970-01-01 00:00:00 +0000 (UTC).
> .SH "CONFORMING TO"
> SVr4, 4.3BSD, C89, C99.
> .SH NOTES
> diff --git a/man3/ftime.3 b/man3/ftime.3
> index ce01574..2304b9a 100644
> --- a/man3/ftime.3
> +++ b/man3/ftime.3
> @@ -36,8 +36,8 @@ ftime \- return date and time
> .sp
> .BI "int ftime(struct timeb *" tp );
> .SH DESCRIPTION
> -This function returns the current time, in seconds and milliseconds
> -since the Epoch (00:00:00 UTC, 1 January 1970).
> +This function returns the current time as seconds and milliseconds
> +since the Epoch, 1970-01-01 00:00:00 +0000 (UTC).
> The time is returned in
> .IR tp ,
> which is declared as follows:
> diff --git a/man3/getspnam.3 b/man3/getspnam.3
> index fdfc1fb..d4ca057 100644
> --- a/man3/getspnam.3
> +++ b/man3/getspnam.3
> @@ -194,7 +194,7 @@ struct spwd {
> char *sp_namp; /* Login name */
> char *sp_pwdp; /* Encrypted password */
> long sp_lstchg; /* Date of last change (measured
> - in days since 1 Jan 1970) */
> + in days since 1970-01-01 00:00:00 +0000 (UTC)) */
> long sp_min; /* Min # of days between changes */
> long sp_max; /* Max # of days between changes */
> long sp_warn; /* # of days before password expires
> @@ -202,7 +202,7 @@ struct spwd {
> long sp_inact; /* # of days after password expires
> until account is disabled */
> long sp_expire; /* Date when account expires (measured
> - in days since 1 Jan 1970) */
> + in days since 1970-01-01 00:00:00 +0000 (UTC)) */
> unsigned long sp_flag; /* Reserved */
> };
> .fi
> diff --git a/man3/mq_receive.3 b/man3/mq_receive.3
> index 32343a0..9a55812 100644
> --- a/man3/mq_receive.3
> +++ b/man3/mq_receive.3
> @@ -83,7 +83,7 @@ flag is not enabled for the message queue description, then
> points to a structure which specifies a ceiling on the time for which
> the call will block.
> This ceiling is an absolute timeout in seconds and nanoseconds
> -since the Epoch (midnight on the morning of 1 January 1970),
> +since the Epoch, 1970-01-01 00:00:00 +0000 (UTC), and it is
> specified in the following structure:
> .sp
> .in +4n
> diff --git a/man3/mq_send.3 b/man3/mq_send.3
> index 3271d88..52eda2a 100644
> --- a/man3/mq_send.3
> +++ b/man3/mq_send.3
> @@ -89,7 +89,7 @@ flag is not enabled for the message queue description, then
> points to a structure which specifies a ceiling on the time for which
> the call will block.
> This ceiling is an absolute timeout in seconds and nanoseconds
> -since the Epoch (midnight on the morning of 1 January 1970),
> +since the Epoch, 1970-01-01 00:00:00 +0000 (UTC), and it is
> specified in the following structure:
> .sp
> .in +4n
> diff --git a/man3/rtime.3 b/man3/rtime.3
> index 24be759..cd84f44 100644
> --- a/man3/rtime.3
> +++ b/man3/rtime.3
> @@ -22,8 +22,8 @@ RFC\ 868 to obtain the time from a remote machine.
> The Time Server Protocol gives the time in seconds since
> 00:00:00 UTC, 1 Jan 1900,
> and this function subtracts the appropriate constant in order to
> -convert the result to seconds since
> -00:00:00 UTC, 1 Jan 1970, the Unix Epoch.
> +convert the result to seconds since the Epoch,
> +1970-01-01 00:00:00 +0000 (UTC).
> .LP
> When
> .I timeout
> diff --git a/man3/sem_wait.3 b/man3/sem_wait.3
> index 526f57d..062e436 100644
> --- a/man3/sem_wait.3
> +++ b/man3/sem_wait.3
> @@ -77,7 +77,7 @@ should block if the decrement cannot be immediately performed.
> The
> .I abs_timeout
> argument points to a structure that specifies an absolute timeout
> -in seconds and nanoseconds since the Epoch (00:00:00, 1 January 1970).
> +in seconds and nanoseconds since the Epoch, 1970-01-01 00:00:00 +0000 (UTC).
> This structure is defined as follows:
>
> .nf
> diff --git a/man3/strftime.3 b/man3/strftime.3
> index ee7b097..89b3a32 100644
> --- a/man3/strftime.3
> +++ b/man3/strftime.3
> @@ -187,8 +187,7 @@ For a version including the seconds, see
> below.
> .TP
> .B %s
> -The number of seconds since the Epoch, that is, since 1970-01-01
> -00:00:00 UTC. (TZ)
> +The number of seconds since the Epoch, 1970-01-01 00:00:00 +0000 (UTC). (TZ)
> .TP
> .B %S
> The second as a decimal number (range 00 to 60).
> diff --git a/man3/strptime.3 b/man3/strptime.3
> index aaba1d1..37b5fcb 100644
> --- a/man3/strptime.3
> +++ b/man3/strptime.3
> @@ -374,8 +374,7 @@ is accepted as a synonym for
> Finally
> .TP
> .B %s
> -The number of seconds since the Epoch,
> -that is, since 1970-01-01 00:00:00 UTC.
> +The number of seconds since the Epoch, 1970-01-01 00:00:00 +0000 (UTC).
> Leap seconds are not counted unless leap second support is available.
> .LP
> The glibc implementation does not require whitespace between
> diff --git a/man3/timeradd.3 b/man3/timeradd.3
> index 869b9e7..67a7fb5 100644
> --- a/man3/timeradd.3
> +++ b/man3/timeradd.3
> @@ -96,8 +96,7 @@ zeros out the
> .I timeval
> structure pointed to by
> .IR tvp ,
> -so that it represents the time at midnight
> -on the morning of 1 January 1970 (the Epoch).
> +so that it represents the Epoch: 1970-01-01 00:00:00 +0000 (UTC).
>
> .BR timerisset ()
> returns true (non-zero) if either field of the
> diff --git a/man4/rtc.4 b/man4/rtc.4
> index c4578b3..77ba983 100644
> --- a/man4/rtc.4
> +++ b/man4/rtc.4
> @@ -59,7 +59,7 @@ and
> .BR time (2),
> as well as setting timestamps on files, etc.
> The system clock reports seconds and microseconds since a start point,
> -defined to be the POSIX Epoch: Jan 1, 1970, 0:00 UTC.
> +defined to be the POSIX Epoch: 1970-01-01 00:00:00 +0000 (UTC).
> (One common implementation counts timer interrupts, once
> per "jiffy", at a frequency of 100, 250, or 1000 Hz.)
> That is, it is supposed to report wall clock time, which RTCs also do.
> diff --git a/man5/core.5 b/man5/core.5
> index 886e88a..2d417f0 100644
> --- a/man5/core.5
> +++ b/man5/core.5
> @@ -125,7 +125,7 @@ PID of dumped process
> number of signal causing dump
> .TP
> %t
> -time of dump, expressed as seconds since the Epoch (00:00h, 1\ Jan 1970, UTC)
> +time of dump, expressed as seconds since the Epoch, 1970-01-01 00:00:00 +0000 (UTC)
> .TP
> %h
> hostname (same as \fInodename\fP returned by \fBuname\fP(2))
> diff --git a/man5/proc.5 b/man5/proc.5
> index 3da30af..a9b24ff 100644
> --- a/man5/proc.5
> +++ b/man5/proc.5
> @@ -1683,7 +1683,7 @@ each subsequent column is the total for a particular interrupt.
> The number of context switches that the system underwent.
> .TP
> \fIbtime 769041601\fP
> -boot time, in seconds since the Epoch (January 1, 1970).
> +boot time, in seconds since the Epoch, 1970-01-01 00:00:00 +0000 (UTC).
> .TP
> \fIprocesses 86031\fP
> Number of forks since boot.
> diff --git a/man7/icmp.7 b/man7/icmp.7
> index c5b676a..e777023 100644
> --- a/man7/icmp.7
> +++ b/man7/icmp.7
> @@ -176,7 +176,7 @@ routing table and the redirect routes are expired after some time.
> .PP
> The 64-bit timestamp returned by
> .B ICMP_TIMESTAMP
> -is in milliseconds since January 1, 1970.
> +is in milliseconds since the Epoch, 1970-01-01 00:00:00 +0000 (UTC).
> .PP
> Linux ICMP internally uses a raw socket to send ICMPs.
> This raw socket may appear in
> diff --git a/man7/time.7 b/man7/time.7
> index 69c08cd..7c22da0 100644
> --- a/man7/time.7
> +++ b/man7/time.7
> @@ -124,7 +124,7 @@ HRTs are not supported on all hardware architectures.
> .SS "The Epoch"
> Unix systems represent time in seconds since the
> .IR Epoch ,
> -which is defined as 0:00:00 UTC on the morning of 1 January 1970.
> +1970-01-01 00:00:00 +0000 (UTC).
>
> A program can determine the
> .I "calendar time"
> --
> 1.6.6.102.gd6f8f
>
>
--
Michael Kerrisk
Linux man-pages maintainer; http://www.kernel.org/doc/man-pages/
Author of "The Linux Programming Interface" http://blog.man7.org/
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