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For 2023 - 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 Our training notes are now very much out of date, but due to upward compatability most of our examples remain operational and even relevant ad you are welcome to make us if them "as seen" and at your own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))
Awk v Perl

"The AWK utility is a data extraction and reporting tool" - Wikipedia

"Perl was developed as a language to make report processing easier" - Wikipedia

So what's the difference?

Looking through all the lines of a file, report the 6th and 1st fields on each line that contains the string "pix" and report complete lines that contain the string "chamber":

In Awk:

  awk '/pix/{print $6,$1};/chamber/{print}' extra_log

Read more about awk [here] on our website or find a full manual [here] on the Gnu site.

In Perl:

  perl -na -e '/pix/ and print "$F[5] $F[0]\n"; /chamber/ and print' extra_log

Find out how to learn more about Perl [here] on our web site. Full Perl documentation can be found [here] on the official Perl web site.

The "trick" is that awk is a useful data extraction and reporting utility, but that Perl grew eclectically and is now so much more. The blogging software that I use to manage these articles is written in Perl, and I can't even imagine trying to do that in Awk. You can write a short utility in awk even shorter than in Perl, but Perl's extensibiity through subs, modules, and much much more means that it't there for the long haul of data analysis long after you've stretched the limits of awk.

Mind you ... if I have the off "one-liner" to write in haste to filter specific data from a log file, I'll probably use awk!
(written 2011-09-18)

Associated topics are indexed as below, or enter http://melksh.am/nnnn for individual articles
P701 - What is Perl?
  [1753] Perl v PHP, choosing the right language - (2008-08-14)

A166 - Web Application Deployment - Linux Utilities
  [63] Almost like old times - (2004-09-26)
  [71] Comparators in Linux and Unix - (2004-10-03)
  [1361] Korn shell course - (2007-09-22)
  [1366] awk - a powerful data extraction and manipulation tool - (2007-09-25)
  [1690] Conversion of c/r line ends to l/f line ends - (2008-06-28)
  [2145] Using the internet to remotely check for power failure at home (PHP) - (2009-04-29)
  [2320] Helping new arrivals find out about source code examples - (2009-08-03)
  [2484] Finding text and what surrounds it - contextual grep - (2009-10-30)
  [2638] Finding what has changed - Linux / Unix - (2010-02-17)
  [3764] Shell, Awk, Perl of Python? - (2012-06-14)
  [3902] Shell - Grep - Sed - Awk - Perl - Python - which to use when? - (2012-10-22)
  [4586] Extending your bash shell with aliases, functions and extra commands - (2015-11-28)
  [4682] One line scripts - Awk, Perl and Ruby - (2016-05-20)

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Perl and CGI - simple form, and monitoring script.
Previous and next
Horse's mouth home
Forward to
Needle in a haystack - finding the web server overload
Some other Articles
A threat in the post? Poor marketing practise from Smiletrain?
Apache Internal Dummy Connection - what is it and what should I do with it?
Checking all the systems on a subnet, using Expect and Tk
Needle in a haystack - finding the web server overload
Awk v Perl
Perl and CGI - simple form, and monitoring script.
Take the dog on a lead - do not carry her. Perl references.
Getting more log information from the Apache http web server
A demonstration of how many Python facilities work together
Pressing ^C in a Python program. Also Progress Bar.
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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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