General commands for Visual Editor(vi)

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What is vi?

The default editor that comes with the UNIX operating system is called vi (visual editor). [Alternate editors for UNIX environments include pico andemacs, a product of GNU.]

* vi filename edit filename starting at line 1
vi -r filename recover filename that was being edited when system crashed

Note: The cursor moves to bottom of screen whenever a colon (:) is typed. This type of command is completed by hitting the <Return> (or <Enter>) key.

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iphoneos4vswp7

iPhone OS 4 vs. Windows Phone 7

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Eye-catching feature from iPhone:

Multitasking: Some consider it the biggest weaknesses of the iPhone in comparison with its smartphone peers: that Apple limits the ability of applications on the iPhone or iPod Touch to run simultaneously. Currently, you can do some multitasking–listening to music while reading e-mail, or browsing Safari during a voice call–but third-party applications can’t do this at all.

On the contrary, Microsoft reported early that they decided to emulate Apple and eliminate multitasking support in its upcoming Windows Mobile 7 operating system.


Some comparisons:

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Hello World!

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As usual, first post has to be “hello world”!

I decided to use WordPress instead of my previous Leon’s Blog system from now on, since this is more Search Engine friendly-saved a lot of time on creating sitemap xmls.

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