What are the usage of pipes ?

A pipe is a chain of processes so that output of one process (stdout) is fed an input (stdin) to another.

The commands are written in sequence separated by |

Different filters are used for Pipes like AWK, GREP

e.g. sort file | lpr

Sort the file and send it to printer

Uses of Pipe

• Several powerful functions can be in a single statement using | 
• Streams of processes can be redirected to specified locations, using >