Hi all,
I'm running external programs like this:
status = `rdesktop .... &`
But my ruby script doesn't work until the external program finished.
How can I run an external program asynchronously?
Thanks.
--
Posted via http://www.ruby-forum.com/.
system("command")
You cannot save the output, though.
On Wed, Jun 17, 2009 at 8:08 AM, Andrey Demidov <andrey.demidov@gmail.com>wrote:
Hi all,
I'm running external programs like this:
status = `rdesktop .... &`
But my ruby script doesn't work until the external program finished.
How can I run an external program asynchronously?Thanks.
--
Posted via http://www.ruby-forum.com/\.
Hi,
Am Mittwoch, 17. Jun 2009, 22:22:49 +0900 schrieb Christopher Carver:
On Wed, Jun 17, 2009 at 8:08 AM, Andrey Demidov <andrey.demidov@gmail.com>wrote:
> I'm running external programs like this:
>
> status = `rdesktop .... &`
>
> But my ruby script doesn't work until the external program finished.
> How can I run an external program asynchronously?
>
system("command")You cannot save the output, though.
Yes, you can.
output = ""
t = Thread.new { output << `somecmd` }
...
t.alive? or puts "The full output is:", output
Bertram
--
Bertram Scharpf
Stuttgart, Deutschland/Germany
http://www.bertram-scharpf.de
I'm running external programs like this:
status = `rdesktop .... &`
But my ruby script doesn't work until the external program finished.
How can I run an external program asynchronously?system("command")
Christopher, system does not execute commands asynchronously.
You cannot save the output, though.
Yes, you can.
Obama? 
output = ""
t = Thread.new { output << `somecmd` }
...
t.alive? or puts "The full output is:", output
You can do this as well:
t = Thread.new { `somecmd` }
...
output = t.value
It seems Thread#value is rarely used but it can be of very useful.
Kind regards
robert
On 17.06.2009 16:02, Bertram Scharpf wrote:
Am Mittwoch, 17. Jun 2009, 22:22:49 +0900 schrieb Christopher Carver:
On Wed, Jun 17, 2009 at 8:08 AM, Andrey Demidov <andrey.demidov@gmail.com>wrote:
--
remember.guy do |as, often| as.you_can - without end
http://blog.rubybestpractices.com/
Robert Klemme wrote:
On 17.06.2009 16:02, Bertram Scharpf wrote:
output = ""
t = Thread.new { output << `somecmd` }
...
t.alive? or puts "The full output is:", outputYou can do this as well:
t = Thread.new { `somecmd` }
...
output = t.value
Thread#value blocks while the thread is running, though.
--
vjoel : Joel VanderWerf : path berkeley edu : 510 665 3407
Hi,
Am Donnerstag, 18. Jun 2009, 05:45:08 +0900 schrieb Robert Klemme:
On 17.06.2009 16:02, Bertram Scharpf wrote:
output = ""
t = Thread.new { output << `somecmd` }
...
t.alive? or puts "The full output is:", outputYou can do this as well:
t = Thread.new { `somecmd` }
...
output = t.value
Gosh, that's the programming style I was looking for.
Bertram
--
Bertram Scharpf
Stuttgart, Deutschland/Germany
http://www.bertram-scharpf.de
Joel VanderWerf wrote:
Robert Klemme wrote:
output = t.value
Thread#value blocks while the thread is running, though.
Ok but how would you in Windows start a seperate program like a vendor
software that runs seperate from the ruby program? If I try
`run_me.exe` or
system("run_me.exe") the ruby program just sits waiting for the other to
finsh?
--
Posted via http://www.ruby-forum.com/\.
Well, yes. But what is your point? If you want the result you need
to wait anyway. If not you can still use your pattern:
t.alive? or puts "The full output is:", t.value
Kind regards
robert
2009/6/17 Joel VanderWerf <vjoel@path.berkeley.edu>:
Robert Klemme wrote:
On 17.06.2009 16:02, Bertram Scharpf wrote:
output = ""
t = Thread.new { output << `somecmd` }
...
t.alive? or puts "The full output is:", outputYou can do this as well:
t = Thread.new { `somecmd` }
...
output = t.valueThread#value blocks while the thread is running, though.
--
remember.guy do |as, often| as.you_can - without end
http://blog.rubybestpractices.com/