Xah Programing Blog
Xah's Programing Blog Archive 2012-11
Bad Advices from Programers about Typing ＆ Keyboard (RSI)
Symbol for the Menu Key
Unicode joy. Found a appropriate symbol to represent the menu key. ⁖
So, now i have:
⇧ Shift, ⌘ Cmd, ❖ Win, ▤ Menu, Return ↩, Enter ↵, ⌥ Opt, ⌫ Backspace, ⌦ Delete, Tab ↹.
I can never remember what “xor” do. But now i got a easy way to remember it. xor returns true if the values of two sides differ.
Logical Operators, Truth Table, Unicode
How to Secure Delete Files, Shred Files, Wipe Drive
If you haven't signed up with dropbox yet, you can use this link:
http://db.tt/13yKyKB. I get more free space if you from my link. Dropbox lets you store your stuff online. Default is 2.5 GB.
How to Write grep in Emacs Lisp
Single-click Open File in Windows ＆ Linux
Keyboard Shortcut Design: Dedicated keys, Special Buttons, Extra Keys
Apple Computer Keyboards Review
much redesign of the keyboard home page. All you need to know about keyboard. If you have questions, feel free to ask me. Comment, or any of the social network. Thanks.
Computer Keyboards, Layouts, Hotkeys, Macros, RSI ⌨
Ruby Creator Cooks Python; Matz and GitCafe
I love Unicode. Here's many articles about Unicode. I just redesigned the page's appearance a bit. Check it out and let me know your thoughts!
Unicode Gallery ＆ Tutorial ∑ λ ∞ π © ™ § ¶ ☺ ♀ ♂ ♥
Intro to text processing using linux tools. Slightly Updated. Good for beginners. Comments and suggestions welcome.
Unix Shell Text Processing Tutorial: grep, cat, awk, sort, uniq, find, xargs, …
A design issue: What should be used for source code section marker. See:
Emacs Form Feed (^L) Display Suggestion and Tips
The workman layout now has a dedicated website. See:
Computer Keyboard Layouts: Dvorak vs Colemak vs Workman
USB3 Drive Speed
Linux: Directory Size: du Command
Discovered this keyboard “ThinkPad USB Keyboard with TrackPoint”
It's a external USB keyboard, with embedded Pointing Stick (a red button between G and H). Compact, laptop style shallow keys.
I don't recommend it. Because laptop style keyboard is the fastest way to get RSI. If you are going to get a external keyboard, get a full-sized one.
My recommendations are:
All these have mechanical keys. (but check the page for detail).
Some people like the ThinkPad's Pointing Stick. I didn't like it. Too slow.
Aenon Sun (孙锡麟).
Git Synctax Examples for GitHub, Google Code, GitCafe
What's the difference between clone and checkout
“git-clone” is for getting a new repository from a remote git server.
“git checkout” is to checkout from a older commit or different branch to your local repository. Use option “-f” (force) to discard local directory changes.
You can call
git log first to get a list of commit hash. Then use
git checkout -f ‹hash› to update your local repository (if you want to look at old files). Then,
git checkout -f master to revert back to your current state.
Emacs Lisp Problems: Trim String, Regex Match Data, Lacking Namespace
Programer Simple Living Shanty Town Squatter
For those of you having RSI issues with mouse, here's a highly recommended mouse:
〈Evoluent Right-Handed VerticalMouse 4 Wireless Mouse 〉
There's also a left-hand version: Evoluent VerticalMouse for left hand.
Or, you can try a trackball:
Best Trackball Mouse, or touchpad Best Input Devices (Jog/Shuttle, Touchpad, Cyborg Mouse, Pen Tablet).
Ergonomic Mouses: Evoluent VerticalMouse, Microsoft Natural 6000
“You Promised Me Mars Colonies. Instead, I Got Facebook.”
used as a cover for my
Technological Musing essay collection.
VirtualBox: Extend Linux Disk Space
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