On Wed, Feb 11, 2009 at 7:32 PM, fadden <fad...@android.com> wrote:
>
> On Feb 11, 8:13 am, David Turner <di...@android.com> wrote:
> > you can't use system() to call a shell script, you need to invoke the
> shell
> > interpreter instead, with something like "/system/xbin/sh
> > /system/xbin/test.sh"
>
> I tried it just now from a trivial C program; worked fine. I'm not
> sure why it would be different from inside the Android app
> environment.
>
> it's a feature of the C library; and I don't think we have that implemented
in Bionic
>
> > On Wed, Feb 11, 2009 at 1:54 PM, Corey <uvic2...@gmail.com> wrote:
> > > I write an API in C by using system("/system/xbin/test.sh"); funtion,
> > > and then my Java code will use this c API code to execute this shell
> > > script.
> > > However, it seems nothing happens.
> > > Can I call a shell script from JNI?
>
> Make sure you have the right "#!" line -- "#!/bin/sh" will not work,
> since the shell doesn't live there. For example:
>
> #!/system/bin/sh
> echo hello >> /sdcard/foo
> exit 0
>
> Bear in mind that stdin / stdout / stderr are redirected to /dev/null
> by default, so you won't see any output.
>
> >
>
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