Hi. Consider a simple class.
I call it class Test.
It has only one instance variable, called @foo.
This variable can be modified with method called
update, which accepts one argument, which is the
new value for this variable.
Code example could look like:
require ‘pp’
class Test
def initialize
@foo = 'foo'
run
end
def update(i)
@foo = i
end
def run
puts 'Running '+@foo+' from '+self.object_id.to_s
end
end
if FILE == $PROGRAM_NAME
_ = Test.new
end
This will return something like:
“Running from foo from -5950760”
Now I need to modify the @foo variable in ALL running scripts
(that run class Test, but it is ok to find only all those
that run test.rb).
I need to get a handle on these programs (I run Linux and am in full
control of the system otherwise, and I need to have this only for
myself.)
I have thought a bit about this but there are two problems:
-
I need to find out which scripts are running currently. This can be
done via “ps ax” ok, then I can grep this result to get the ID. -
But even when I have this, how can I call them directly?
In pseudo code:
matches = find_all_ruby_scripts.that_match ‘test’
matches.update ‘bar’
matches.run
This would then return something like:
“Running from bar from -5950760”
For all these processes.
Does anyone have ideas how to solve it?
Solve it in ANY way, mind you. Though of course, if there
would be a SIMPLE and ELEGANT way, I would be happy.