Re: Execute an OS command and capture output

[Victor Porton <porton@narod.ru>]

Dmitry A. Kazakov wrote:

> On 2017-11-13 17:38, Victor Porton wrote:
>> I need a (preferably portable, but only Linux would be well) way to
>> execute an OS command with some input in stdin which I provide and
>> capture the output from stdout.
> 
> It is a vague question because there are numerous methods of how the
> input, output and error pipes are handled. E.g. by 0, 1, 2 tasks.

I need synchronous processing of input/output pipes. That is I need just 
provide a String variable for the input and receive a String value with the 
output after the command ends.

However, I will most probably need also to terminate the spawned command 
after a timeout (not allow it to run more than 20 secs, for example). But 
this "timeout" functionality may be added later.

> Anyway see:
> 
> 1. GNAT's System.OS_Lib.Spawn, System.OS_Lib.Non_Blocking_Spawn.
> 
> 2. A more comfortable method would be to use GTK bindings (GLib actually):
> 
>     http://www.dmitry-kazakov.de/ada/gtkada_contributions.htm#10
> 
-- 
Victor Porton - http://portonvictor.org