At one time, Microsoft file names were shaped as follows: eight or less characters in the name, a full stop, and three characters in what is called the extension. This was the 8.3 file naming convention set by the ms-dos computer operating system, among others. Here are some example names:
In file names, avoid spaces, and don't use the following:
/ ? < > \ : * | " ^
Nowadays, long file names are ok. Files still have 'File extensions', separated from the name by a full stop. They're often hidden from your sight unless you've chosen to see them. In general, if you can't see a file extension, there's no need to add one, it's probably there already. Think of file extensions as 'Belonging' to the particular software that you used to create the file.
'Good' file names are lower case throughout, avoid certain characters and contain no spaces, lastly they only use a full stop between the name and extension. Here's some good present-day file names:
Spaces in file names aren't a good idea - you can use a hyphen so that a name is still readable - this allows their transfer to other computer systems without your file names falling apart at the seams.
If you're sending a file by email, or submitting work to 'Minerva', avoid these: extra full stops and spaces.
The file extension has a special function. When computer software encounters a file, it uses it to hazard a guess as to what sort of file it's found. So if you are using Microsoft 'Word' and open a file that ends with the extension '.rtf', the software thinks
'Ah, '.rtf' means that this file is a text file saved in Rich Text Format and I can deal with that.'
... and opens it. Nowadays a file is often handed from
one computer program to another and the first has to know what sort of file it is to hand it on, so this is becoming more important.
It's a good idea to let the computer programme worry about what extension to name files. If you give files extensions that are useful to humans, eg:
... the humans might be happy at first but computer software won't be able to recognise what type of file it's dealing with.
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Windows, left to itself, hides file extensions in dialogue boxes. To change this behaviour you'll need to start Windows Explorer (Hold down the 'Windows' key and press 'E'). Then select: Tools/Folder Options/View and uncheck the 'Hide file extensions for known file types' option. Finally, press the control to 'Set all of your folders to the same view ...
Windows is set so it hides some folders and files which it doesn't think you need to see. To reveal all files and folders using Windows Explorer, select: 'Tools/Folder Options/View' and select 'Show hidden files and folders' option.
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When you double click a file, the file will open in a an application. You might find that it's not the application you wanted it to be though. You can change this as follows:
© Mark Annand. Updated February 10th 2010