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Can an .exe invoked from a .bat file shut down execution of latercmds?

Discussion in 'Windows XP' started by RichardOnRails, Jul 11, 2010.

  1. RichardOnRails

    RichardOnRails Flightless Bird

    I've got a 3-line bat file:
    rake ready_for_the_day
    @echo ------
    rake COFFEE_CUPS=5 make_coffee

    (BTW: Rake is Ruby's version of make: it invokes Ruby commands rather
    the U*ix cmds. The arguments identify a task within a Rakefile in the
    current directory, possibly with settings for environment variables)

    The above ,bat file invokes the first command successfully, AFAIK, and
    then quits
    When I comment out the first cmd with a leading colon the echo works,
    as does the 2nd cmd

    Could a Rake.exe shut down the batch cmd that invoked it. If so, is
    there any way I could insulate the batch command file from such a
    shutdown attempt?

    Thanks in Advance,
    Richard
     
  2. RichardOnRails

    RichardOnRails Flightless Bird

    On Jul 11, 1:32 pm, RichardOnRails
    <RichardDummyMailbox58...@USComputerGurus.com> wrote:
    > I've got a 3-line bat file:
    >     rake ready_for_the_day
    >     @echo ------
    >     rake COFFEE_CUPS=5 make_coffee
    >
    > (BTW: Rake is Ruby's version of make: it invokes Ruby commands rather
    > the U*ix cmds.  The arguments identify a task within a Rakefile in the
    > current directory, possibly with settings for environment variables)
    >
    > The above ,bat file invokes the first command successfully, AFAIK, and
    > then quits
    > When I comment out the first cmd with a leading colon the echo works,
    > as does the 2nd cmd
    >
    > Could a Rake.exe shut down the batch cmd that invoked it.  If so,  is
    > there any way I could insulate the batch command file from such a
    > shutdown attempt?
    >
    > Thanks in Advance,
    > Richard


    Problem solved:
    Sorry, folks. I just remembered this question I similar to one I
    asked the other day.
    There the answer was "invoked commands like rake as follows:
    cmd /c the.exe
    That worked here, too.

    Best wishes,
    Richard
     
  3. Pegasus [MVP]

    Pegasus [MVP] Flightless Bird

    Re: Can an .exe invoked from a .bat file shut down execution of later cmds?

    "RichardOnRails" <RichardDummyMailbox58407@USComputerGurus.com> wrote in
    message
    news:cd697713-6125-4a9b-8cce-944b99275fe5@w12g2000yqj.googlegroups.com...
    > I've got a 3-line bat file:
    > rake ready_for_the_day
    > @echo ------
    > rake COFFEE_CUPS=5 make_coffee
    >
    > (BTW: Rake is Ruby's version of make: it invokes Ruby commands rather
    > the U*ix cmds. The arguments identify a task within a Rakefile in the
    > current directory, possibly with settings for environment variables)
    >
    > The above ,bat file invokes the first command successfully, AFAIK, and
    > then quits
    > When I comment out the first cmd with a leading colon the echo works,
    > as does the 2nd cmd
    >
    > Could a Rake.exe shut down the batch cmd that invoked it. If so, is
    > there any way I could insulate the batch command file from such a
    > shutdown attempt?
    >
    > Thanks in Advance,
    > Richard


    Try this:
    @echo off
    start /b rake ready_for_the_day
    echo Label 1
    pause
    rake COFFEE_CUPS=5 make_coffee

    Note also that you should include full paths for all file names referenced
    in batch files if you want the batch file to be robust. Rake.exe has no path
    in your example.
     
  4. RichardOnRails

    RichardOnRails Flightless Bird

    On Jul 11, 1:58 pm, "Pegasus [MVP]" <n...@microsoft.com> wrote:
    > "RichardOnRails" <RichardDummyMailbox58...@USComputerGurus.com> wrote in
    > messagenews:cd697713-6125-4a9b-8cce-944b99275fe5@w12g2000yqj.googlegroups..com...
    >
    >
    >
    > > I've got a 3-line bat file:
    > >    rake ready_for_the_day
    > >    @echo ------
    > >    rake COFFEE_CUPS=5 make_coffee

    >
    > > (BTW: Rake is Ruby's version of make: it invokes Ruby commands rather
    > > the U*ix cmds.  The arguments identify a task within a Rakefile in the
    > > current directory, possibly with settings for environment variables)

    >
    > > The above ,bat file invokes the first command successfully, AFAIK, and
    > > then quits
    > > When I comment out the first cmd with a leading colon the echo works,
    > > as does the 2nd cmd

    >
    > > Could a Rake.exe shut down the batch cmd that invoked it.  If so,  is
    > > there any way I could insulate the batch command file from such a
    > > shutdown attempt?

    >
    > > Thanks in Advance,
    > > Richard

    >
    > Try this:
    > @echo off
    > start /b rake ready_for_the_day
    > echo Label 1
    > pause
    > rake COFFEE_CUPS=5 make_coffee
    >
    > Note also that you should include full paths for all file names referenced
    > in batch files if you want the batch file to be robust. Rake.exe has no path
    > in your example.


    Hi Pegasys,

    Thanks for your response.

    > Rake.exe has no path in your example.

    True, but Rake's path is provided in my installation of Ruby: K:/
    _Utilities/ruby186-26_rc2/ruby/bin/ (BTW, Ruby adjusts path
    separators to the OS environment.)

    I looked up the specs on cmd and start. It looks like they were drawn
    up by lawyers :)
    In your view, is there a reason to prefer "start /b" to "cmd /c"?

    Thanks in Advance,
    Richard
     
  5. pjp

    pjp Flightless Bird

    Re: Can an .exe invoked from a .bat file shut down execution of later cmds?

    I'm coming in late on this but given the subject of thread ... I wrote a
    program (EXE) years ago as a menu front end that rewrote the batch file it
    was invoked from. The edits were what got parsed when the exe finished, the
    new line(s) executed, returned to batch file, looped to top of it, reinvoked
    exe which would change it again to new selection etc. etc. In other words
    the batch file got reparsed after return from the exe.

    "RichardOnRails" <RichardDummyMailbox58407@USComputerGurus.com> wrote in
    message
    news:554c88b1-04fc-42ce-8d8f-9908f917b77f@e6g2000vbp.googlegroups.com...
    On Jul 11, 1:58 pm, "Pegasus [MVP]" <n...@microsoft.com> wrote:
    > "RichardOnRails" <RichardDummyMailbox58...@USComputerGurus.com> wrote in
    > messagenews:cd697713-6125-4a9b-8cce-944b99275fe5@w12g2000yqj.googlegroups.com...
    >
    >
    >
    > > I've got a 3-line bat file:
    > > rake ready_for_the_day
    > > @echo ------
    > > rake COFFEE_CUPS=5 make_coffee

    >
    > > (BTW: Rake is Ruby's version of make: it invokes Ruby commands rather
    > > the U*ix cmds. The arguments identify a task within a Rakefile in the
    > > current directory, possibly with settings for environment variables)

    >
    > > The above ,bat file invokes the first command successfully, AFAIK, and
    > > then quits
    > > When I comment out the first cmd with a leading colon the echo works,
    > > as does the 2nd cmd

    >
    > > Could a Rake.exe shut down the batch cmd that invoked it. If so, is
    > > there any way I could insulate the batch command file from such a
    > > shutdown attempt?

    >
    > > Thanks in Advance,
    > > Richard

    >
    > Try this:
    > @echo off
    > start /b rake ready_for_the_day
    > echo Label 1
    > pause
    > rake COFFEE_CUPS=5 make_coffee
    >
    > Note also that you should include full paths for all file names referenced
    > in batch files if you want the batch file to be robust. Rake.exe has no
    > path
    > in your example.


    Hi Pegasys,

    Thanks for your response.

    > Rake.exe has no path in your example.

    True, but Rake's path is provided in my installation of Ruby: K:/
    _Utilities/ruby186-26_rc2/ruby/bin/ (BTW, Ruby adjusts path
    separators to the OS environment.)

    I looked up the specs on cmd and start. It looks like they were drawn
    up by lawyers :)
    In your view, is there a reason to prefer "start /b" to "cmd /c"?

    Thanks in Advance,
    Richard
     
  6. Pegasus [MVP]

    Pegasus [MVP] Flightless Bird

    Re: Can an .exe invoked from a .bat file shut down execution of later cmds?

    "RichardOnRails" <RichardDummyMailbox58407@USComputerGurus.com> wrote in
    message
    news:554c88b1-04fc-42ce-8d8f-9908f917b77f@e6g2000vbp.googlegroups.com...
    > On Jul 11, 1:58 pm, "Pegasus [MVP]" <n...@microsoft.com> wrote:
    >> "RichardOnRails" <RichardDummyMailbox58...@USComputerGurus.com> wrote in
    >> messagenews:cd697713-6125-4a9b-8cce-944b99275fe5@w12g2000yqj.googlegroups.com...
    >>
    >>
    >>
    >> > I've got a 3-line bat file:
    >> > rake ready_for_the_day
    >> > @echo ------
    >> > rake COFFEE_CUPS=5 make_coffee

    >>
    >> > (BTW: Rake is Ruby's version of make: it invokes Ruby commands rather
    >> > the U*ix cmds. The arguments identify a task within a Rakefile in the
    >> > current directory, possibly with settings for environment variables)

    >>
    >> > The above ,bat file invokes the first command successfully, AFAIK, and
    >> > then quits
    >> > When I comment out the first cmd with a leading colon the echo works,
    >> > as does the 2nd cmd

    >>
    >> > Could a Rake.exe shut down the batch cmd that invoked it. If so, is
    >> > there any way I could insulate the batch command file from such a
    >> > shutdown attempt?

    >>
    >> > Thanks in Advance,
    >> > Richard

    >>
    >> Try this:
    >> @echo off
    >> start /b rake ready_for_the_day
    >> echo Label 1
    >> pause
    >> rake COFFEE_CUPS=5 make_coffee
    >>
    >> Note also that you should include full paths for all file names
    >> referenced
    >> in batch files if you want the batch file to be robust. Rake.exe has no
    >> path
    >> in your example.

    >
    > Hi Pegasys,
    >
    > Thanks for your response.
    >
    >> Rake.exe has no path in your example.

    > True, but Rake's path is provided in my installation of Ruby: K:/
    > _Utilities/ruby186-26_rc2/ruby/bin/ (BTW, Ruby adjusts path
    > separators to the OS environment.)
    >
    > I looked up the specs on cmd and start. It looks like they were drawn
    > up by lawyers :)
    > In your view, is there a reason to prefer "start /b" to "cmd /c"?
    >
    > Thanks in Advance,
    > Richard


    "Start" and "cmd" are different things.

    "Start" creates a new thread, one that is independent from the current
    thread. You use it when you want to invoke two processes that are
    independent of each other..

    "Cmd" spawns another instance of the Command Processor. In other words, it
    causes the batch file to go off at a tangent. However, the batch file will
    not continue until the new command processor finishes its job.

    The complexity of switches that worries you is a delight for programmers
    because it gives them great flexibility.
     
  7. RichardOnRails

    RichardOnRails Flightless Bird

    On Jul 12, 6:19 pm, "Pegasus [MVP]" <n...@microsoft.com> wrote:
    > "RichardOnRails" <RichardDummyMailbox58...@USComputerGurus.com> wrote in
    > messagenews:554c88b1-04fc-42ce-8d8f-9908f917b77f@e6g2000vbp.googlegroups.com...
    >
    >
    >
    > > On Jul 11, 1:58 pm, "Pegasus [MVP]" <n...@microsoft.com> wrote:
    > >> "RichardOnRails" <RichardDummyMailbox58...@USComputerGurus.com> wrote in
    > >> messagenews:cd697713-6125-4a9b-8cce-944b99275fe5@w12g2000yqj.googlegroups.com...

    >
    > >> > I've got a 3-line bat file:
    > >> >    rake ready_for_the_day
    > >> >    @echo ------
    > >> >    rake COFFEE_CUPS=5 make_coffee

    >
    > >> > (BTW: Rake is Ruby's version of make: it invokes Ruby commands rather
    > >> > the U*ix cmds.  The arguments identify a task within a Rakefile inthe
    > >> > current directory, possibly with settings for environment variables)

    >
    > >> > The above ,bat file invokes the first command successfully, AFAIK, and
    > >> > then quits
    > >> > When I comment out the first cmd with a leading colon the echo works,
    > >> > as does the 2nd cmd

    >
    > >> > Could a Rake.exe shut down the batch cmd that invoked it.  If so,  is
    > >> > there any way I could insulate the batch command file from such a
    > >> > shutdown attempt?

    >
    > >> > Thanks in Advance,
    > >> > Richard

    >
    > >> Try this:
    > >> @echo off
    > >> start /b rake ready_for_the_day
    > >> echo Label 1
    > >> pause
    > >> rake COFFEE_CUPS=5 make_coffee

    >
    > >> Note also that you should include full paths for all file names
    > >> referenced
    > >> in batch files if you want the batch file to be robust. Rake.exe has no
    > >> path
    > >> in your example.

    >
    > > Hi Pegasys,

    >
    > > Thanks for your response.

    >
    > >> Rake.exe has no path in your example.

    > > True, but Rake's path is provided in my installation of Ruby:  K:/
    > > _Utilities/ruby186-26_rc2/ruby/bin/  (BTW, Ruby adjusts path
    > > separators to the OS environment.)

    >
    > > I looked up the specs on cmd and start.  It looks like they were drawn
    > > up by lawyers :)
    > > In your view, is there a reason to prefer "start /b" to "cmd /c"?

    >
    > > Thanks in Advance,
    > > Richard

    >
    > "Start" and "cmd" are different things.
    >
    > "Start" creates a new thread, one that is independent from the current
    > thread. You use it when you want to invoke two processes that are
    > independent of each other..
    >
    > "Cmd" spawns another instance of the Command Processor. In other words, it
    > causes the batch file to go off at a tangent. However, the batch file will
    > not continue until the new command processor finishes its job.
    >
    > The complexity of switches that worries you is a delight for programmers
    > because it gives them great flexibility.


    Excellent explanation. I'll think about this if I decide to resume
    this batch-file approach.
    I just started exploring a perhaps more appropriate way to executing
    my commands successively: Using Rake, which a a Ruby version of the
    venerable Un*x make utility. But that's in suspense while I work on a
    more pressing problem.

    But thanks for illuminating this issue for me.

    Best wishes,
    Richard
     

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