Re: My script almost works but spams the terminal its launched from if useing dash.
On Saturday 16 April 2016 13:11:54 Aero Maxx wrote:
> On 16/04/2016 17:45, Gene Heskett wrote:
> > On Saturday 16 April 2016 12:01:28 Aero Maxx wrote:
> >> On 16/04/2016 16:23, Gene Heskett wrote:
> >>> But when I run it with dash, it doesn't seem to work right, and
> >>> spams the terminal with its error messages. One that appears to
> >>> kill its function is the bashism of using [[ ]] to surround string
> >>> variables, reported like this:
> >>> bin/mailwatcher: 64: bin/mailwatcher: [[: not found
> >>> bin/mailwatcher: 70: bin/mailwatcher: [[: not found
> >>> bin/mailwatcher: 77: bin/mailwatcher: [[: not found
> >>
> >> dash isn't the same as bash, as it has a limited set of
> >> instructions or commands it can do.
> >>
> >> But I too would be interested to know if it is possible to get it
> >> to work in dash, I don't believe it is, but I am happy to be
> >> corrected or proved wrong.
> >>
> >>> And finally, once its working with either shell, how do I shut it
> >>> up totally? Even the above command line launch fails as it
> >>> outputs to that shell, a newline for every incoming mail which
> >>> gradually scrolls any output that was on-screen, offscreen without
> >>> leaving a prompt until I tap the return key to restore it.
> >>
> >> Also isn't the command you are running supposed to be as follows ?
> >>
> >>> bin/mailwatcher 2>&1 > /dev/null &
> >
> > Is the space you inserted into my line between the > and the
> > /dev/null a game changer? In either bash or dash? Its been a while
> > since I last read the bash docs, but I don't recall there was any
> > emphasis on that.
>
> I'm sorry I was a bit too eager to reply and neglected to change what
> I had pasted in.
>
> I meant to say could you try this
>
> > bin/mailwatcher > /dev/null 2>&1 &
>
Now that is a re-arrangement I have not tried. But will. Thank you Aero
Maxx.
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Cheers, Gene Heskett
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