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Over 2,000 years later, science catches up with the Stoics #
Radiation Rings Hint Universe Was Recycled Over and Over
"Most cosmologists trace the birth of the universe to the Big Bang 13.7 billion years ago. But a new analysis of the relic radiation generated by that explosive event suggests the universe got its start eons earlier and has cycled through myriad episodes of birth and death, with the Big Bang merely the most recent in a series of starting guns."The Stoics by John M. Rist:
"Each of the early Stoics taught that the universe, after certain definite periods of time (whose duration is never specified), dissolves into fire and so 'purifies' itself ... We can see how this process would have been outlined by Zeno: the universe originally generated from creative fire (pyr technikon); after a period of time it resolved itself once again into pure fire, whence another universe was in turn generated from the pure creative fire. The cosmic process is therefore an infinite series of finite phases of alternate diakosmesis and ekpyrosis."
/misc | Nov 30, 2010
Editing or deleting file metadata in OS X #The Finder's Get Info window does not allow changing most metadata, like the URL in "Where from" as shown here:
mdls can list a file's metadata attributes:
$ mdls file.flv kMDItemContentCreationDate = 2009-07-30 17:48:06 -1000 kMDItemContentModificationDate = 2009-07-30 17:48:06 -1000 kMDItemContentType = "com.adobe.flash.video" ... kMDItemWhereFroms = ( "http://s1sdlod053.bcst.cdn.s1s.yimg.com//s1snfs06r05/005/videosearch/90522577.flv..." )
but cannot edit them. For editing, we need xattr:
$ xattr -l file.flv com.apple.metadata:kMDItemWhereFroms: 00000000 62 70 6C 69 73 74 30 30 A1 01 5F 11 01 7F 68 74 |bplist00.._...ht| 00000010 74 70 3A 2F 2F 73 31 73 64 6C 6F 64 30 35 33 2E |tp://s1sdlod053.| 00000020 62 63 73 74 2E 63 64 6E 2E 73 31 73 2E 79 69 6D |bcst.cdn.s1s.yim| 00000030 67 2E 63 6F 6D 2F 2F 73 31 73 6E 66 73 30 36 72 |g.com//s1snfs06r| 00000040 30 35 2F 30 30 35 2F 76 69 64 65 6F 73 65 61 72 |05/005/videosear| 00000050 63 68 2F 39 30 35 32 32 35 37 37 2E 66 6C 76 3F |ch/90522577.flv?| 00000060 53 74 72 65 61 6D 49 44 3D 39 30 35 32 32 35 37 |StreamID=9052257| ... $ xattr -w "com.apple.metadata:kMDItemWhereFroms"
"http://topdocumentaryfilms.com/journey-edge-universe/" file.flv
-d can be substituted for -w to delete the data. More info on OS X metadata and extended attributes
/mac | Nov 30, 2010
Cracking OS X keychain files #KeychainRecovery is a free tool to recover OS X keychain file passwords. (via What's My Pass?)
Especially useful after having reset a user's password via installer DVD or single user mode. The default keychain file (login.keychain) is normally located in ~/Library/Keychains.
It is not necessary to run the installer; simply extract KeychainRecovery.app from Archive.pax.gz found inside KeychainRecovery.pkg.
If the OS X dictionary (/usr/share/dict/words) does not meet your needs, you might want to generate a custom wordlist with crunch, try a wordlist containing the 500 most common passwords, or purchase Openwall's wordlist collection.
UPDATE: Forgot about crowbarKC, which has been around longer and was slightly faster than KeychainRecovery in my informal testing. John the Ripper is much faster than both, but it requires a bit more effort to install (paid binaries also available) and extract hashes. See Cracking Mac OS X Passwords and Installing John the Ripper version 1.7.3.4 on Mac OSX Snow Leopard for details.
/mac | Nov 25, 2010
Installing Microsoft Office 2011 / uninstalling Office 2008 #The Microsoft Office 2008 installer automatically searched for and offered to remove previous versions of Office. Office 2011 does not. If you'd like to cleanly uninstall Office 2008 before installing 2011, simply run "Remove Office.app" found here: /Applications/Microsoft Office 2008/Additional Tools/Remove Office/
/mac | Nov 24, 2010
Newly added to OS X page #ThumbsUp 4.5 [512k] Batch create thumbnails via drag-and-drop
(via CyberNet News)
/mac | Nov 24, 2010
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