The following is a transcript of Sen. Barack Obama's speech, as provided by Obama's campaign. We the people, in order to form a more perfect union. Two hundred and twenty one years ago, in a hall that ...

Learn how to append text to files in Linux using commands like double redirection operator, tee, and sed without overwriting existing data.

And one final great grep feature: recursive search. Running “grep -r pattern” will search all files within your current ...