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2301 - Mistaken identity?
I asked who I was logged in as yesterday ... and I got two different answers: [melksham ~]# who am i trainee pts/1 2009-07-21 13:16 (192.168.200.80) [melksham ~]# whoami root [melksham ~]# When you log in to a Unix or a Linux box, you give an account name (and password, I hope!) and you'r ....

2300 - What does x on a linux directory mean?
Trick question (I don't ask too many, I hope ... and those that I do ask are designed to be thought provoking): What does the x bit in permission strings mean? Most delegates who've done a bit of Unix or Linux before will tell me it's the exexcutable bit - says whether a file can be run as a progr ....

2299 - How much space does my directory take - Linux
The index card in the library for "War and Peace" takes a lot less space that the book itself, and so it is when you ask Linux or Unix "how much space is taken in this directory" ... you'll be told how big each of the files are, and how big the index table for each subrirectory is. Here's an examp ....

2298 - Melksham Carnival Parade - the people
Carnival is all about people ... people in the carnival, and people watching the carnival. Melksham Carnival and Party in the Park, 18th July 2009. ....

2297 - Standing on the corner, Melksham Carnival
Yesterday was Melksham's "Party in the Park" and Carnival ... the Carnival Parade running from the car park of Cooper Avon Tires at about 6 p.m., looping through the town centre, with a variety of walking groups and floats. On days like this, Well House Manor is ideally placed as we're close enough ....

2296 - Variable scope - what is it, and how does it Ruby?
Variables have different "scopes" - in other words, a name that is allocated to a piece of computer memory and subsequently used to refer to that memory may be 'know about" to your program only within a very small area, or much more widely. It's the same IRL ("In Real Life") - consider you, Dad, ....

2295 - The dog is not in trouble
"I know I put my papers somewhere" I said to Lisa [wife], and Gypsy [dog] goes off and whimpers in the corner, looking very guilty. So had she [dog] taken the papers and chewed them? That wasn't the case - she had heard the word "no" (or rather "know") in what I said, and had taken it that she wa ....

2294 - Can you learn to program in 4 days?
"New to programming" on Monday Morning ... and understanding a program that reads and analyses a web access log file, reporting back on remote hosts that visited us and stayed for between one and five minutes by the end of Thursday. That's a good advert for Ruby - and a good advert for our Learning ....

2293 - Regular Expressions in Ruby
Ruby has a wide variety of string handling methods, and a very strong regular expression engine. In one of the example I wrote today ([link] Regular Expression Example in Ruby) I've included a primer on the elements of a Ruby Regular expression as well as sample source code - showing you how you ca ....

2292 - Object Orientation in Ruby - intermediate examples
It's when you teach object orientation - the fully Monty, including inheritance, static and dynamic methods and variables, and so on - to a complete novice to programming and that person finds it's one of the easiest parts of the course that you realise: a) Just how many bad ole habits us ancient s ....

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