This times the execution of a Command. The Out-Default part is just to print the command output to console.

Making a python process exit with error code 1 after 30 seconds. Exit is unclean (no garbage is collected, no flushed buffers, etc...).

Sometimes (ex. django templates section at setting.py), a function expects an absolute path, but it's more practical when developing to refer it to the current file position in our code base. The rel function does exactly that.

Turn a string LikeThis into like_this

replace foo -> bar in all .txt files down the tree

Dunno why, the syntax highlighter adds \3's to the code. Try plain text.

Searches down the current directory every file whose name matches (case insensitively) {{file_pattern}} for the regexp {{text}}.

To rename a bunch of files from ".foo" to ".bar" (like windows' REN *.foo *.bar) in unix.

Looking at the solution, it is easy to adapt it to more powerful character substitutions on a 1 to 1 basis.

If you want to test what will be executed before doing so, just drop the last pipe.

Centering a div with css is easy, but there are some compatibility quirks...

Use this macro to help declaring auto-release pointers in C++. See usage in the source. Remember that std::auto_ptr is a standard template class that helps releasing memory, since the pointer you provide in the constructor will be released in the destructor of the class. This means that memory is released "automagically" when the variable goes out of scope. Use of this class is specially advisable in a method with serveral returns or capable of throwing an exception.

Imports data from CSV (excel-compatible format) into MySQL. Also check the mysqlimport utility and the complementary SELECT ... INTO OUTFILE.

Given an an associative list ((k1 . v1) (k2 . v2) ... (kn . vn)), with possibly equal values for ki, it returns another alist where all cells have distinct keys and where values originally associated to the same key have been grouped as a list in the new cons cell. Ouch! This is much harder to explain than to code. Just check the commented example in the code.

Reading the contents of a whole file as a string.

Useful for speeding up searches.

MySQL backup and restore example through mysqldump / mysql command line utilities.