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Re: Why does this only work when I am running a shellscript

From markspace <markspace@nospam.nospam>
Newsgroups comp.lang.java.programmer
Subject Re: Why does this only work when I am running a shellscript
Date 2013-03-30 08:23 -0700
Organization A noiseless patient Spider
Message-ID <kj6vt9$3c7$1@dont-email.me> (permalink)
References <8738vdmg0h.fsf@Servus.decebal.nl>

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On 3/30/2013 1:46 AM, Cecil Westerhof wrote:
> I have the following code:
>      private static void doCommand(final String cmd) throws IOException {
>          Process p;
>          Scanner sc;
>
>          System.out.println("#" + cmd + "#");
>          p  = Runtime.getRuntime().exec(cmd);
>          sc = new Scanner(p.getInputStream());

Besides Barb's answer, I believe you also have to drain the output 
stream.  If you don't read a program's output, it'll hang, waiting for you.


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Why does this only work when I am running a shellscript Cecil Westerhof <Cecil@decebal.nl> - 2013-03-30 09:46 +0100
  Re: Why does this only work when I am running a shellscript Barb Knox <see@sig.below> - 2013-03-31 03:54 +1300
    Re: Why does this only work when I am running a shellscript Steven Simpson <ss@domain.invalid> - 2013-03-30 16:07 +0000
  Re: Why does this only work when I am running a shellscript markspace <markspace@nospam.nospam> - 2013-03-30 08:23 -0700
    Re: Why does this only work when I am running a shellscript Arne Vajhøj <arne@vajhoej.dk> - 2013-03-30 11:34 -0400
  Re: Why does this only work when I am running a shellscript Roedy Green <see_website@mindprod.com.invalid> - 2013-03-30 08:35 -0700
  Re: Why does this only work when I am running a shellscript RVic <rvince99@hotmail.com> - 2013-03-30 08:41 -0700
    Re: Why does this only work when I am running a shellscript Joerg Meier <joergmmeier@arcor.de> - 2013-03-31 01:00 +0100
    Re: Why does this only work when I am running a shellscript Roedy Green <see_website@mindprod.com.invalid> - 2013-03-31 17:04 -0700
  Re: Why does this only work when I am running a shellscript Steven Simpson <ss@domain.invalid> - 2013-03-30 16:13 +0000

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