Brian Dessent wrote:
> system() is just a wrapper around spawnvp(). If spawn() isn't what you
> want then neither is system(). spawn() does not necessarily replace the
> current process (_P_OVERLAY), it can also start and optionally wait for
> a subprocess (_P_WAIT, _P_NOWAIT, _P_DETACH).
Excell
Archie Warnock wrote:
> > You could fork() and exec(), or just call one of the spawn() family of
> > functions. This is all open source you know, you could look and see how
> > system() is implemented in winsup/cygwin/syscalls.cc.
>
> I'll have to look and see there. The fork()/exec()/spawn() f
Archie Warnock wrote:
>>The path is irrelevent because it's called as "/bin/sh -c cmd", and the
>>location of /bin is taken from the mount table. On your systems without
>
> Ummm... are you saying that I have a Cygwin mount table outside of Cygwin?
Ahh... I see it now. Thanks for the pointer.
Brian Dessent wrote:
> That is how system() works on every unix platform: "/bin/sh -c %s"
Yep. Got it.
> You could fork() and exec(), or just call one of the spawn() family of
> functions. This is all open source you know, you could look and see how
> system() is implemented in winsup/cygwin/sy
René Berber wrote:
> I don't know if it works but I would try to use popen(), there's also
> exec() and all it's relatives.
I'll try popen. I'm not inclined to use anything from exec or spawn - I
don't want to replace the program. I just need to run an external
program and read the results back
Archie Warnock wrote:
> Hmmm... you're right. Thanks. I was hoping the mention of /bin/sh was
> more figurative - ie, just _a_ command interpreter. Guess not, eh?
That is how system() works on every unix platform: "/bin/sh -c %s"
> So, what would be the right way to call an external program
Archie Warnock wrote:
[snip]
> So, what would be the right way to call an external program from a
> Cygwin program without installing Cygwin, if not system()?
I don't know if it works but I would try to use popen(), there's also exec() and
all it's relatives.
> I also find it somewhat puzzling t
René Berber wrote:
> Yes, you are missing something really simple... have you seen the man
> page for system()? Of course not, "Use `system' to pass a command
> string `*S' to `/bin/sh'..."
Hmmm... you're right. Thanks. I was hoping the mention of /bin/sh was
more figurative - ie, just _a_ c
Archie Warnock wrote:
[snip]
> It seems obvious to me that system() is not finding a command
> interpreter on the machine,
Exactly!
> although they are correctly listed in the
> path for the command window. Am I missing something really stupid that
> needs to be included in the distribution or s
Hi all,
I've been through the FAQ and 2 years worth of archives, trying every
trick I could find there, but I cannot make this work. I have a program
which calls Cygwin's system() function. It works reliably from the
Windows command line (outside of Cygwin) on machines that have Cygwin
installed
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