I'm not sure why that ' > ' is five characters instead of three. Probably
it was specified as 3 characters with spaces surrounding the '>' but that
got interpreted as three spaces followed by '> '.
In any event, it's just: command string followed by ' > ' followed by
temporary file name.
Meanwhile, it would have been more useful if it had been '>',tmpfilename,'
',command -- that way if the command had a redirect in it, it would just
work. As it is, one must do something a little extra to redirect to a file
Anyways, here's an example of the problem in action:
|interface error: spawn
|spawn[:0]
2!:0 'date >/tmp/f1;:'
|interface error
| 2!:0'date >/tmp/f1;:'
^D
real 121m42.418s
user 71m39.468s
sys 12m58.545s
~$ ls -lart /tmp
total 8
drwxr-xr-x 23 root root 4096 Mar 9 14:12 ..
drwxrwxrwt 2 root root 4096 Mar 13 01:19 .
And, here's an example of successfully redirecting to a file:
2!:0 'date >/tmp/f2;:'
The ;: at the end of the command string terminates the command with the
redirect and follows it with an empty command which does nothing. The
redirect then takes effect on that command (thus 2!:0 returns nothing).
~$ cat /tmp/f2
Thu Mar 13 02:04:09 UTC 2014
Anyways, I've got jconsole running under gdb, and I'll see if the C
debugger can tell me anything about the problem.
Thanks,
--
Raul
On Wed, Mar 12, 2014 at 9:27 PM, Joe Bogner <[email protected]> wrote:
> On Wed, Mar 12, 2014 at 9:16 PM, Joe Bogner <[email protected]> wrote:
> > I can't figure out by looking at it how the tmpnam gets
> > added to the system command. I'm used to seeing popen
> >
> >
> https://github.com/openj/core/blob/18fd23bbdc2f50770eb3047e978cd5e4e3b47039/xh.c#L39
> >
>
> Scratch that, I figured out how it gets added. It's appending it to
> the end of the pointer. The number 5 still has me confused and the " >
> ". Anyways, I don't think this is helping unless it has something to
> do with 5 and exceeding the number of temporary files or something
> like that. Probably a false trail of thought
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