[rrd-users] Re: RRD::TIME::STRFTIME use?

Wed Dec 7 00:46:09 MET 2005

Hi Jeremy,

I use the following code at the bottom of all of my graphs:

COMMENT:"Data graphed from <RRD::TIME::STRFTIME START <RRD::CV LENGTH>
<RRD::CV END> '%H\:%M %e/%b/%Y'> to <RRD::TIME::STRFTIME END <RRD::CV
LENGTH> <RRD::CV END> '%H\:%M %e/%b/%Y'>"

Which produces:

Data graphed from 10:29 6/Dec/2005 to 10:29 7/Dec/2005

I get the <RRD::CV LENGTH> etc. variables from the CGI query string
which looks like:

/cgi-bin/DISK.cgi?PERIOD=Daily&END=now&LENGTH=end-1d

/cgi-bin/CPU.cgi?PERIOD=2+Hour&END=1133910000&LENGTH=end-2h

And then the parameters of my graph are specified as:

--start <RRD::CV LENGTH> --end <RRD::CV END>

Use can use "man strftime" to get the formatting options, but I've
listed them below.

I hope this helps.

Cheers,
Kobe

%%    Same as %.
%a    Locale's abbreviated weekday name.
%A    Locale's full weekday name.
%b    Locale's abbreviated month name.
%B    Locale's full month name.
%c    Locale's appropriate date and time representation.
%C    Century number (the year divided by 100 and  truncated
      to  an  integer  as  a  decimal number [1,99]); single
      digits are preceded by 0; see standards(5).
%d    Day of month [1,31]; single digits are preceded by 0.
%D    Date as %m/%d/%y.
%e    Day of month [1,31]; single digits are preceded  by a space.
%g    Week-based year within century [00,99].
%G    Week-based year, including the century [0000,9999].
%h    Locale's abbreviated month name.
%H    Hour (24-hour clock) [0,23]; single  digits  are  preceded by 0.
%I    Hour (12-hour clock) [1,12]; single  digits  are  preceded by 0.
%j    Day number of year [1,366]; single digits are preceded by 0.
%k    Hour (24-hour clock) [0,23]; single  digits  are  preceded by a
blank.
%l    Hour (12-hour clock) [1,12]; single  digits  are  preceded by a
blank.
%m    Month number [1,12]; single digits are preceded by 0.
%M    Minute  [00,59];  leading  0  is  permitted  but   not required.
%n    Insert a NEWLINE.
%p    Locale's equivalent of either a.m. or p.m.
%r    Appropriate time representation in 12-hour clock  format with %p.
%R    Time as %H:%M.
%S    Seconds [00,61]; the range of values is [00,61] rather
      than  [00,59]  to allow for the occasional leap second
      and even more occasional double leap second.
%t    Insert a TAB.
%T    Time as %H:%M:%S.
%u    Weekday as a decimal number [1,7], with 1 representing
      Monday. See NOTES below.
%U    Week number of year as a decimal number [00,53],  with
      Sunday as the first day of week 1.
%V    The ISO 8601 week number as a decimal number  [01,53].
      In  the  ISO  8601 week-based system, weeks begin on a
      Monday and week  1  of  the  year  is  the  week  that
      includes  both  January  4th and the first Thursday of
      the year.  If the first Monday of January is the  2nd,
      3rd,  or  4th, the preceding days are part of the last
      week of the preceding year.  See NOTES below.
%w    Weekday as a decimal number [0,6], with 0 representing
      Sunday.
%W    Week number of year as a decimal number [00,53],  with
      Monday as the first day of week 1.
%x    Locale's appropriate date representation.
%X    Locale's appropriate time representation.
%y    Year within century [00,99].
%Y    Year, including the century (for example 1993).
%Z    Time zone name or abbreviation, or no bytes if no time
      zone information exists.

-----Original Message-----
From: rrd-users-bounce at list.ee.ethz.ch
[mailto:rrd-users-bounce at list.ee.ethz.ch] On Behalf Of Pavleck, Jeremy
D.
Sent: Wednesday, 7 December 2005 8:33 AM
To: rrd-users at list.ee.ethz.ch
Subject: [rrd-users] RRD::TIME::STRFTIME use?

Greetings,
 I'm playing around with rrdcgi to create some graphs, and what I'd
really like to know is now to use RRD::TIME::STRFTIME. Since I'm not at
all familiar with STRFTIME and the php.net manual, although helpful,
didn't give me the info I'm looking for, I thought I'd ask here. I'd
like to see an example of how to set the start and stop times in the
cgi. Though, after staring at this and playing with it for awhile, I'm
not quite sure that's exactly what it is for.. Either way, I'm trying to
make with RRDCGI, the same graph outputs as you get with normal MRTG,
and am stuck. Thanks in advance for any help!

Jeremy D. Pavleck
Network Engineer
System Management

Direct Line: 612-977-5881
Toll Free: 1-888-CAPELLA ext. 5881
Fax: 612-977-5060
E-mail: jeremy.pavleck at capella.edu

Capella University
225 South 6th Street, 9th Floor
Minneapolis, MN 55402

www.capella.edu

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