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Prime HTTP Status Codes

2012 Feb 22, 4:00
These are the prime HTTP status codes:
PermalinkCommentshttp prime technical useless

The Old New Thing : Clap and the filter graph claps with you

2009 Apr 7, 12:45"First, you started up the application and picked a video clip. The video clip just sat there. As you started clapping, the video clip started playing. If you clapped at about 80 beats per minute, the video clip played at its normal speed. If you clapped faster, the video clip ran faster. If you clapped slower, the video clip ran slower. If you stopped clapping, the video clip stopped. It was freaky cool. Totally useless, but freaky cool."PermalinkCommentshumor clap video raymond-chen filter-graph reference-clock

WebAIM: Blog - History of the browser user-agent string

2008 Sep 8, 7:00A brief history of user agent strings in web browsers, culminating in: "And thus Chrome used WebKit, and pretended to be Safari, and WebKit pretended to be KHTML, and KHTML pretended to be Gecko, and all browsers pretended to be Mozilla, and Chrome called itself Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US) AppleWebKit/525.13 (KHTML, like Gecko) Chrome/0.2.149.27 Safari/525.13, and the user agent string was a complete mess, and near useless, and everyone pretended to be everyone else, and confusion abounded."PermalinkCommentshumor internet browser mozilla google chrome user-agent ie

How to Clean Old Markings off a Whiteboard (super secret method)

2008 Aug 8, 2:51

Photo of Whiteboard, by Richard HoldenI've got a new office and I must clean off my inherited whiteboard. The previous owner left various diagrams, code snippets, etc. on for such a time that they can no longer be erased by conventional means: the whiteboard eraser is useless! I couldn't find any whiteboard cleaner either, but Ali told me the following secret. You can write over the dried on text with a normal dry erase marker. When you erase the new markings the old are erased as well. It sounds too fantastic, but believe me, its true! I don't know the brand or material of the whiteboard but the whiteboard markers are 'Expo, Bold Color Dry Erase'.

PermalinkCommentserase howto whiteboard office secret nontechnical

Which which - Batch File Hackiness

2007 Aug 9, 5:41To satisfy my hands which have already learned to type *nix commands I like to install Win32 versions of common GNU utilities. Unfortunately, the which command is a rather literal port and requires you to enter the entire name of the command for which you're looking. That is 'which which' won't find itself but 'which which.exe' will. This makes this almost useless for me so I thought to write my own as a batch file. I had learned about a few goodies available in cmd.exe that I thought would make this an easy task. It turned out to be more difficult than I thought.

for /F "usebackq tokens=*" %%a in ( `"echo %PATH:;=& echo %"` ) do (
    for /F "usebackq tokens=*" %%b in ( `"echo %PATHEXT:;=& echo %"` ) do (
        if exist "%%a"\%1%%b (
            for  %%c in ( "%%a"\%1%%b ) do (
                echo %%~fc
            )
        )
    )
)
The environment variables PATH and PATHEXT hold the list of paths to search through to find commands, and the extensions of files that should be run as commands respectively. The 'for /F "usebackq tokens=*" %%a in (...) do (...)' runs the 'do' portion with %%a sequentially taking on the value of every line in the 'in' portion. That's nice, but PATH and PATHEXT don't have their elements on different lines and I don't know of a way to escape a newline character to appear in a batch file. In order to get the PATH and PATHEXT's elements onto different lines I used the %ENV:a=b% syntax which replaces occurrences of a with b in the value of ENV. I replaced the ';' delimiter with the text '& echo ' which means %PATHEXT:;=& echo% evaluates to something like "echo .COM& echo .EXE& echo .BAT& ...". I have to put the whole expression in double quotes in order to escape the '&' for appearing in the batch file. The usebackq and the backwards quotes means that the backquoted string should be replaced with the output of the execution of its content. So in that fashion I'm able to get each element of the env. variable onto new lines. The rest is pretty straight forward.

Also, it supports wildcards:
C:\Users\davris>which.cmd *hi*
C:\Windows\System32\GRAPHICS.COM
C:\Windows\System32\SearchIndexer.exe
D:\bin\which.exe
D:\bin\which.cmd
PermalinkCommentswhich cmd technical batch for
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