Can I run wordpress in the web space http://members.shaw.ca/username ?
I'm not too familiar with how WordPress works, but if you still have access to the old FTP-style webspace and WordPress let's you create/manage content through that, then I believe you can.
The new webspace ([username].shawwebspace.ca URL's) doesn't have FTP access so you are limited to the functionality of the web editor itself.
what r the difference between ([username].shawwebspace.ca and members.shaw.ca/]username]
The older members.shaw.ca accounts had FTP access, whereas the newer version does not. The new webspace is a template system that links with Shaw Photoshare so you wouldn't be able to use Wordpress with it. Even still, I can't say for certain - even if you have an old email account still registered withe FTP access - that you'd be able to use Wordpress with it.
I am confident that Wordpress requires server-side access, which FTP alone wouldn't give access to.
In short, I'm pretty sure no, it won't
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