As Alex notes below - what you probably meant was "|"
--- Begin Message ---
On Tue, 2008-09-09 at 14:21 +0100, Kae Verens wrote:
> Gopal Ghosh wrote:
> > Dear All,
> > my self gopal ghosh a newbie in Linux world. found myself in love with
> > Linux as i came to know the power of Linux CLI
> >
> > if two different commands are separated by || (a method by which two
> > comands can be executed one after another )
> > such as
> > ls || nano
> >
> > the above command executes both the command with out stops after
> > executing the first one.
> >
> > the book says that it will stop executing further after the first command
> > but it is not the same which i observed
> > pls help
>
> '||' means 'or'. In a list of commands separated by '||', each of the
> commands are run until one of them succeeds.
>
> as an example:
> echo 1 || echo 2
>
> this echoes '1' to the screen, but '2' is /not/ echoed.
>
> in your command, 'nano' should only run if 'ls' fails.
>
> for example, as a normal user, run this:
> ls /root || nano
>
> in that case, nano will run, but in this, it won't:
> ls ~ || nano
>
> I hope that helps!
>
> kae
and since the email is titled "Pipe Commands" I guess what you really
want is '|' which will take the output from the first command and feed
it to the second, in other words pipe it.
Cheers, Alex.
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