< or > or >> (REDIRECTION)


<
To change the normal source of data for a command, and take it from a file 
rather than from the keyboard. See the REDIRECTION <(INPUT) definition for 
examples.

>
To change the normal destination of data from a command, and place the
output in a file. See the REDIRECTION >(OUTPUT) definition for examples.

>> 
To change the normal destination of data from a command, and add on to 
the end of a file without altering the previous contents of the file. See
the REDIRECTION >>(APPEND) definition for examples.
