[lug] Linux 'dc' command

[carl wagner]

Control Z suspends a program  and puts it in the background.  Try typing 
"fg" to get it back to the foreground, then type "q"<enter> to quit dc (which
as 
several people have said is Desktop Calculator).  

Don't use Control Z unless you really want to put them in the background 
(suspended). And if you do indeed want it to run in the background then you 
will need to do a "bg" after the control Z to reactivate the process.

Or better yet just use the command format "{command} &" or "nohup {command}
&"  
which automatically puts the "command" in the background.

You may want to look at job control in your shell. Try "man bash" "man bg"
"man fg"
Carl.


David Willcox wrote:
> 
> Hi,
> I did something by mistake. I was trying to think of a command that would
> copy one  floppy to another and typed 'dc' by mistake. Then I saw a pause so
> I press CTL Z to get out of it . After that I saw a '0' (zero) and I knew I
> was into something I shouldn't be in. It then said 'stack cleared'. Well
> I thought all was well at the business site where I have a business
> application running for a Pawnshop. Then empolyees began telling me that
> every customer invoice was
> showing a '0' (zero) for each causing the appl. to errror.
> 
> Is there a way to undo what I did or does someone have an answer to what I
> can do to fix this 'stack cleared' thing. I have heard of stacks in
> programming but never had to use that level of programming before. I am used
> to a little linux and a business application written in basic.
> 
> Thanks for any help you can offer and by the way you guys are great and know
> your stuff and I for one really appreciate this group,
> 
> Dave Willcox :-)
> 
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