What is the LINUX/UNIX pipe? How is pipe different from output redirection? Give an example to illustrate your answer.

What will be an ideal response?

A LINUX/UNIX pipe allows you to connect the standard output of a command to the standard input of another command. Output redirection connects standard output of a command to a file. The following examples illustrate the difference. When the first command executes, the output of the ls -l command is given as input to the grep command. When the second command executes the output of the ls -l command is redirected to the sarwar.terminal file. If the sarwar.terminal file does not exist, it is created.
ls -l | grep “sarwar”
ls -l > sarwar.terminal