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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 Our training notes are now very much out of date, but due to upward compatability most of our examples remain operational and even relevant ad you are welcome to make us if them "as seen" and at your own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))
Shell Script for CGI on the web

In the course of duty (providing simple "how-to" examples), I've come up with a short shell script in the Bourne again shell that allows a rudimentary lookup in a data file on a server running CGI. Nothing special about this, except it's a short example.

Run it from this link and try putting in data such as "Ca" and "DD" and "don". The source is also posted on our web site ... Enjoy!

Security note - you need to take extreme care with shell scripts that read from user form entrys and pass the values entered into commands like grep. I strongly recommend that you filter all inputs as I have done in the example using sed


(written 2004-09-26, updated 2006-06-05)

 
Associated topics are indexed as below, or enter http://melksh.am/nnnn for individual articles
A167 - Web Application Deployment - Shell Programming (bash)
  [63] Almost like old times - (2004-09-26)
  [749] Cottage industry or production line data handling methods - (2006-06-07)
  [827] No news is good news with Unix and Linux - (2006-08-10)
  [1287] Work and play at Well House Manor - Football and Shell Shortcuts - (2007-08-02)
  [1345] Perl and Shell coding standards / costs of an IT project - (2007-09-11)
  [1468] Lexical v Arithemetic testing, Bash and Perl - (2007-12-11)
  [1527] Selecting file names in a shell - one word or another - (2008-02-02)
  [1904] Ruby, Perl, Linux, MySQL - some training notes - (2008-11-23)
  [3791] The Kernel, Shells and Daemons. Greek Gods in computing - (2012-07-01)
  [4400] Commenting out an echo killed my bash backup script - (2015-01-19)
  [4487] Starting MySQL. ERROR! The server quit without updating PID file - how we fixed it. - (2015-05-06)
  [4584] Bash ... some new scripts to - handling user input - (2015-11-27)
  [4586] Extending your bash shell with aliases, functions and extra commands - (2015-11-28)
  [4587] shell - bash. Writing conditional tests and statements - the options available - (2015-11-28)


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Some other Articles
Get the strategy worked out and the tactics just fall into place.
Object Oriented Programming in PHP
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Shell Script for CGI on the web
Technical Open House
Python is a fabulous language
Birth Notice
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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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