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coreutils doc fix to cover TZ better
From: |
Paul Eggert |
Subject: |
coreutils doc fix to cover TZ better |
Date: |
Fri, 29 Oct 2004 16:25:06 -0700 |
User-agent: |
Gnus/5.1006 (Gnus v5.10.6) Emacs/21.3 (gnu/linux) |
The coreutils manual doesn't cover TZ in some places that it should,
e.g., "ls", "who". Also, I'm about to merge gnulib getdate into
coreutils, so some cross references need updating. I installed this
patch.
Maybe the coreutils manual should get reorganized a bit so that TZ and
similarly-global environment variables (e.g., LC_ALL) are all
documented together? Just a thought.
2004-10-29 Paul Eggert <address@hidden>
* coreutils.texi: Document TZ better, and adjust to new getdate.texi.
(Top): Update menu.
(pr invocation, Formatting file timestamps, touch invocation,
stat invocation, who invocation, date invocation, Options for date):
Mention TZ.
--- coreutils.texi.~1.223.~ 2004-10-28 00:43:52 -0700
+++ coreutils.texi 2004-10-29 16:18:45 -0700
@@ -432,15 +432,16 @@ File permissions
Date input formats
-* General date syntax: General date syntax
-* Calendar date items: Calendar date items
-* Time of day items: Time of day items
-* Time zone items: Time zone items
-* Day of week items: Day of week items
-* Relative items in date strings: Relative items in date strings
-* Pure numbers in date strings: Pure numbers in date strings
-* Seconds since the Epoch: Seconds since the Epoch
-* Authors of get_date: Authors of get_date
+* General date syntax:: Common rules.
+* Calendar date items:: 19 Dec 1994.
+* Time of day items:: 9:20pm.
+* Time zone items:: @sc{est}, @sc{pdt}, @sc{gmt}.
+* Day of week items:: Monday and others.
+* Relative items in date strings:: next tuesday, 2 years ago.
+* Pure numbers in date strings:: 19931219, 1440.
+* Seconds since the Epoch:: @@1078100502.
+* Specifying time zone rules:: TZ="America/New_York", TZ="UTC0".
+* Authors of get_date:: Bellovin, Eggert, Salz, Berets, et al.
Opening the software toolbox
@@ -2047,6 +2048,12 @@ and the @env{LC_TIME} locale category sp
locale, the default is @samp{%b %e %H:%M %Y} (for example,
@samp{Dec@ @ 4 23:59 2001}.
address@hidden TZ
+Time stamps are listed according to the time zone rules specified by
+the @env{TZ} environment variable, or by the system default rules if
address@hidden is not set. @xref{TZ Variable,, Specifying the Time Zone
+with @env{TZ}, libc, The GNU C Library}.
+
@item address@hidden@var{in-tabwidth}]]
@itemx address@hidden@var{in-tabwidth}]]
@opindex -e
@@ -5938,6 +5945,12 @@ today is not listed in recent form, the
which means you probably have clock skew problems which may break
programs like @command{make} that rely on file timestamps.
address@hidden TZ
+Time stamps are listed according to the time zone rules specified by
+the @env{TZ} environment variable, or by the system default rules if
address@hidden is not set. @xref{TZ Variable,, Specifying the Time Zone
+with @env{TZ}, libc, The GNU C Library}.
+
The following option changes how file timestamps are printed.
@table @samp
@@ -8460,6 +8473,13 @@ Another operation that modifies a file's
the others is renaming. In any case, it is not possible, in normal
operations, for a user to change the ctime field to a user-specified value.
address@hidden TZ
+Time stamps assume the time zone rules specified by the @env{TZ}
+environment variable, or by the system default rules if @env{TZ} is
+not set. @xref{TZ Variable,, Specifying the Time Zone with @env{TZ},
+libc, The GNU C Library}. You can avoid avoid ambiguities during
+daylight saving transitions by using @sc{utc} time stamps.
+
The program accepts the following options. Also see @ref{Common options}.
@table @samp
@@ -9011,6 +9031,7 @@ Print the information in terse form, sui
Use @var{format} rather than the default format.
Interpreted sequences for file stat are:
+
@itemize @bullet
@item %a - Access rights in octal
@item %A - Access rights in human readable form
@@ -9041,6 +9062,7 @@ Interpreted sequences for file stat are:
@end itemize
Interpreted sequences for file system stat are:
+
@itemize @bullet
@item %n - File name
@item %i - File System id in hex
@@ -9053,6 +9075,12 @@ Interpreted sequences for file system st
@item %s - Optimal transfer block size
@item %c - Total file nodes in file system
@end itemize
+
address@hidden TZ
+Time stamps are listed according to the time zone rules specified by
+the @env{TZ} environment variable, or by the system default rules if
address@hidden is not set. @xref{TZ Variable,, Specifying the Time Zone
+with @env{TZ}, libc, The GNU C Library}.
@end table
@exitstatus
@@ -11185,6 +11213,12 @@ for the user running it (determined from
by the hostname. Traditionally, the two arguments given are @samp{am
i}, as in @samp{who am i}.
address@hidden TZ
+Time stamps are listed according to the time zone rules specified by
+the @env{TZ} environment variable, or by the system default rules if
address@hidden is not set. @xref{TZ Variable,, Specifying the Time Zone
+with @env{TZ}, libc, The GNU C Library}.
+
The program accepts the following options. Also see @ref{Common options}.
@table @samp
@@ -11329,6 +11363,12 @@ it with a default format that depends on
In the default C locale, this format is @samp{'+%a %b %e %H:%M:%S %Z %Y'},
so the output looks like @samp{Fri Feb 27 13:47:51 PST 2004}.
address@hidden TZ
+Normally, @command{date} uses the time zone rules indicated by the
address@hidden environment variable, or the system default rules if @env{TZ}
+is not set. @xref{TZ Variable,, Specifying the Time Zone with
address@hidden, libc, The GNU C Library}.
+
@findex strftime @r{and @command{date}}
@cindex time formats
@cindex formatting times
@@ -11688,10 +11728,10 @@ Set the time and date to @var{datestr}.
@cindex UTC
@cindex Greenwich Mean Time
@cindex GMT
address@hidden TZ
Use Coordinated Universal Time (@acronym{UTC}) by operating as if the
@env{TZ} environment variable were set to the string @samp{UTC0}.
-Normally, @command{date} operates in the time zone indicated by
address@hidden, or the system default if @env{TZ} is not set. Coordinated
+Coordinated
Universal Time is often called ``Greenwich Mean Time'' (@sc{gmt}) for
historical reasons.
@end table
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