For 2021 - online Python 3 training - see ((here)).
Our plans were to retire in summer 2020 and see the world, but Coronavirus has lead us into a lot of lockdown programming in Python 3 and PHP 7.
We can now offer tailored online training - small groups, real tutors - works really well for groups of 4 to 14 delegates. Anywhere in the world; course language English.
Please ask about private 'maintenance' training for Python 2, Tcl, Perl, PHP, Lua, etc.
Finding what has changed - Linux / Unix
If you want to find out what has changed in a file, use the diff
command. And if you want to find out what has changed across a whole directory structure, use diff -r
If I want to compare a backup with my current system - to see what has been altered (perhaps when something has gone wrong and I want to know what it might be), then one of the tools I might use is diff:
[trainee@easterton ooerr]$ diff -r trainee.bak trainee
Only in trainee.bak/a654: 6_web.xml
diff -r trainee.bak/y205/gui1.py trainee/y205/gui1.py
< widget = Label(None, text="Hello World")
> widget = Label(Lots, text="Hello World")
And that shows me that since I took the backup, a file called 6_web.xml has been deleted and the 7th line of a file called gui1.py has been altered.
Another way of finding recent changes is the find
command, which can be used for many other file system searches too. Here's how I would use it to find all files and directories that have been altered in the last day in the same directory that I was checking above:
[trainee@easterton ooerr]$ find trainee -mtime -1 -print
Associated topics are indexed as below, or enter http://melksh.am/nnnn for individual articlesA166 - Web Application Deployment - Linux Utilities 
Almost like old times - (2004-09-26) 
Comparators in Linux and Unix - (2004-10-03) 
Korn shell course - (2007-09-22) 
awk - a powerful data extraction and manipulation tool - (2007-09-25) 
Conversion of c/r line ends to l/f line ends - (2008-06-28) 
Using the internet to remotely check for power failure at home (PHP) - (2009-04-29) 
Helping new arrivals find out about source code examples - (2009-08-03) 
Finding text and what surrounds it - contextual grep - (2009-10-30) 
Awk v Perl - (2011-09-18) 
Shell, Awk, Perl of Python? - (2012-06-14) 
Shell - Grep - Sed - Awk - Perl - Python - which to use when? - (2012-10-22) 
Extending your bash shell with aliases, functions and extra commands - (2015-11-28) 
One line scripts - Awk, Perl and Ruby - (2016-05-20)
Some other Articles
What does a web application look like under Tomcat?Object Oriented Programming in PHPHow is your tax pound spent?su or su - ... what is the difference?Finding what has changed - Linux / UnixCourses - Melksham and elsewhere - until the end of AprilLinux - useful tips including history and file name completionA PHP example that lets your users edit content without HTML knowledgeLondon to and from Melksham by public transportWhy do I teach niche skills rather than mainstream?
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