[TUHS] Bourne shell and comments

[Bakul Shah]

On Wed, 19 Apr 2017 10:31:53 MDT Grant Taylor <gtaylor at tnetconsulting.net> wrote:
> I think you're effectively doing the same thing that I'm doing by having
> 
> my prompt start with '#', thus turning copy & paste ""errors into
> pasting comments.  Just a difference of a '#' comment character and a
> ':' label.
> 
> I see little difference between ':' and '#' in this case.
> 
> Please help me understand if I'm wrong.

To see the difference try this:

# echo one; echo two
: echo one; echo two

You can select the whole line starting with : and have the
command re-excute.  This is more useful in rc since it doesn't
store history or have ^n/^p etc bound to scrolling through
history.