VDU input redirection

Hi to all my dear friends and visitors of this blog. the shell command line format for redirecting output to a file is
$command>file
Here file will receive the data output from command is redirected to file instead of the standard output, i.e. VDU input redirection. We can redirect the input for a command using input redirection. The shell command line that allows you input redirection is,$command
Here file is the source of the data for command. If file does not exist, the shell will issue an error and abort the operation. Let us assume that we have a file called names. Redirecting both standard input and standard output