From: Marc Heiler <lists@...>
Date: 2012-04-10T19:22:58+09:00
Subject: Bash - "jobs -l" command from ruby. HMmmmm.

Hi,

My situation:

In bash, I start jobs and tasks etc...

These all get a PID.

Now with the command:

  jobs -l

I can list these and get their PIDs.

This command gives me a list like this (example):

  [1]  24056 Stopped (signal)        tt++ /tmptintin/run.tin  (wd: /)
  [2]  24816 Stopped (signal)        tt++ /tmptintin/run.tin  (wd:
/depot/RUBY/TOOLS)
  [3]   7660 Stopped (signal)        tt++ /tmptintin/run.tin  (wd: /)
  [4]  28912 Stopped (signal)        tt++ /tmptintin/run.tin  (wd:
/depot/RUBY/test)
  [5]- 21064 Stopped (signal)        tt++ /tmptintin/run.tin  (wd: /)
  [6]+  7242 Stopped (signal)        tt++ /tmptintin/run.tin  (wd:
/depot/RUBY/foo)

Ok you see six jobs. I get all the PIDs there, for example, the last
job has the PID 7242.

I can then kill this process like so:

  kill -9 7242

But from within a .rb script this does not seem to work.

I need to get the PID of the last executed program somehow, but
only those started from an instance of bash (I embed my bash into
konsole tabs, they all have different jobs of course)

system 'jobs -l'

Does not work, neither does

  result = `jobs -l`

command not found: jobs -l

It fails because jobs is a bash internal command. :(

Is there any other way I can find out the PIDs of
the jobs that were started from that bash instance?

-- 
Posted via http://www.ruby-forum.com/.