Re: How to lock a terminal

[Nick Warne]

OK, everybody,

Thanks for the replies.  As I stated, it was me being stupid - why I 
didn't think of Ctrl+Z I don't know - I have only been using GNU/Linux 
for 14 years :)

Mind you, it was late and I was rushing to stop my Raspberry Pi 
connecting to the AP rather than the range extender.

Sorry for the noise.

Nick

On 16/02/16 10:19, Bob Proulx wrote:
> Nick Warne wrote:
> > I was in a SSH session, and checking something inadvertently issued:
> >
> > > nano /var/log/messages | grep a
> >
> > (I was searching for something else than an 'a', but the above example shows
> > the issue - about to use 'nano', but then forgot to change it to 'cat').
> >
> > The terminal just sits there doing nothing - CTRL+C doesn't do anything; in
> > a SSH session, the only option is to kill the terminal.  On a local machine,
> > you can use kill -9 from another terminal to get out of it.
>
> On a remote machine you can do the same.  There really is no
> difference between local and remote here.  You just use a second
> terminal for it.
>
> However this is the perfect case for job control.  No need for a
> second terminal.  Here is an example.  Use Control-Z to stop the
> foreground job.
>
>    rwp@havoc:~$ nano /var/log/messages | grep a
>    ^Z
>    [1]+  Stopped                 nano /var/log/messages | grep a
>    rwp@havoc:~$ jobs
>    [1]+  Stopped                 nano /var/log/messages | grep a
>    rwp@havoc:~$ kill %1
>    Received SIGHUP or SIGTERM
>    rwp@havoc:~$ jobs
>    [1]+  Terminated              nano /var/log/messages | grep a
>    rwp@havoc:~$ jobs
>    rwp@havoc:~$
>
> Simply stop the process and then kill it using the same terminal.
>
> Bob
>
> P.S. The other suggestions to use Control-X to exit nano are also good
> too but job control is general for the entire class type of commands
> like this and I think good to know too.

--
Gosh that takes me back... or is it forward?  That's the trouble with
time travel, you never can tell."
                -- Doctor Who "Androids of Tara"