I/O Redirection

Sometimes you need to use the output from a command more than once. To accomplish this, you can redirect the output of commands using some neat command-line tricks. Let’s look at the following commands:

sort	Sorts the output of a command or file
wc	Provides a word or line count
cat	Displays the contents of a file
uniq	Lists all the unique lines in a file or command output
echo	Outputs or displays a string
cut	Divides a string or output