Redirection
From FreeBSDwiki
Sending one form of output to a form of input other than that which it was originally intended. Common operands include: >, >>, <, <<, and the ever popular |.
> sends output somewhere (usually a file) >> appends output somewhere (without overwriting it) < sends output the other way << appends output the other way | sends output somewhere (usually a command)
If you're using the bash shell, because you're not a sadist and like useful shells, you also have some special options available to you: you can redirect standard input, standard output and standard error messages.
