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For 2023 (and 2024 ...) - we are now fully retired from IT training.
We have made many, many friends over 25 years of teaching about Python, Tcl, Perl, PHP, Lua, Java, C and C++ - and MySQL, Linux and Solaris/SunOS too. Our training notes are now very much out of date, but due to upward compatability most of our examples remain operational and even relevant ad you are welcome to make us if them "as seen" and at your own risk.

Lisa and I (Graham) now live in what was our training centre in Melksham - happy to meet with former delegates here - but do check ahead before coming round. We are far from inactive - rather, enjoying the times that we are retired but still healthy enough in mind and body to be active!

I am also active in many other area and still look after a lot of web sites - you can find an index ((here))
A year ago today, a server upgrade and a new Perl example

"Weren't you on a boat somewhere last year when we spoke?" asked Atiqur when I called him yesterday to talk about our server upgrade / annual contract. Indeed I was, and I was impressed not only by his memory (he assures me it's not just his computer system of notes!) but by the speed of upgrade; our server was upgraded in the early hours of this morning and our service was down for just nine minutes.

Our daily log file is around 20 Mbytes ... how did I find out how long we were off air? A quick little Perl program run against that file:

  while (<>) {
    ($h,$m,$s) = m!:(\d+):(\d+):(\d+)!;
    $sid = $h * 3600 + $m * 60 + $s;
    if ($osid and $sid - $osid > 500) {
      print "$oh $om $os -> $h $m $s\n";
      }
    $osid = $sid;
    $oh = $h; $om = $m; $os = $s;
  }


Run against the log file, this reported:

  wizard:jul12 graham$ perl gap_report ac_20120709
  00 39 42 -> 00 48 42
  wizard:jul12 graham$


So that's a thorough recommendation for UK2. And if you want to learn about Perl, and who you can extract information to quickly from such a massive amount of data, take a look at our Perl courses - fully described on that server that was just upgrades. All our samples and support materials are there too - after the course you'll find you have knowledgable access to hundreds of indexed source code examples and articles. See (for example) the resources on Perl Hashes [here].

Illustration - on this day, last year!

(written 2012-07-10, updated 2012-07-14)

 
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zip in Python
Backquote, backtic, str and repr in Python - conversion object to string
Like a bathroom company with no plumbers
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This is a page archived from The Horse's Mouth at http://www.wellho.net/horse/ - the diary and writings of Graham Ellis. Every attempt was made to provide current information at the time the page was written, but things do move forward in our business - new software releases, price changes, new techniques. Please check back via our main site for current courses, prices, versions, etc - any mention of a price in "The Horse's Mouth" cannot be taken as an offer to supply at that price.

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