After reinstalling Xcode 4.3, I lost the gcc-4.2.

Installing the command line tools component did not fix it.

May need to run “brew install

If I have removed a file by accident, and want to reinstate the file form a source code repository, then,

in subversion I will do

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svn update file

in mercurial I will do

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hg revert file

In git,

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git checkout file

Reference:

http://hgbook.red-bean.com/read/mercurial-in-daily-use.html

Sometimes my time is spent on things which are mundane and mindless. Today is a good example,

1) I reinstalled XCode 4.3

2) resolved an iphone sync problem due to file permission

3) Trying to free up some local hard disk space

4) Fix brew issue due to the reinstallation of XCode

In AD287 Diocletian divided Roman Empire into East and West

To be precise, I actually started reading the book some ten years ago.