1 Simple commands:

     1 Simple commands:

     2 

     2 

     3   $ echo foo

     3   $ echo foo

     4   foo

     4   foo

     5   $ printf 'bar\nbaz\n' | cat

     7   $ printf 'bar\nbaz\n' | cat

     6   bar

     8   bar

     7   baz

     9   baz

     8 

    10 

     9 Multi-line command:

    11 Multi-line command: