Changes

| style="padding-left:15px;" |xxxRedirection*xStandard Input (stdin)*xStandard Output (stdout)* Standard Error (stderr)* Piping (pipes)<br><br>xxxMultiple Commands*xSemicolon ; and Grouping ( )  | style="padding-left:15px;"|xxxRedirection Filters*x<br>head* tail* sort* grep* cut*x<br>tr*xwc<br><br>