RLPS

RLPS is a very simple and pure Ruby gem which sole purpose is to get a list of the currently running processes in a Linux system by reading data from Linux /proc/ directory. More information read The Linux Documentation Project topic on this subject.

Installation

Add this line to your application's Gemfile:

gem 'rlps'

And then execute:

$ bundle

Or install it yourself as:

$ gem install rlps

Documentation

See http://www.rubydoc.info/gems/rlps/

Usage

# There are other helpful methods in addition to the ones I showed here.
# See http://www.rubydoc.info/gems/rlps/ for full documentation

require 'rlps'

my_processes = RLPS.processes

my_processes.first            # => systemd: 1
my_processes.first.name  # => systemd
my_processes.first.pid     # => 1
my_process.class            # => Array
my_process.length          # => 150

# KDE Spectacle sometimes remains hidden after saving a screenshot
# When accumulated, it consumes too much from the RAM.
RLPS.processes.select{ |pr| pr.name=='spectacle' }.length  # => 3
RLPS.processes.select{ |pr| pr.name=='spectacle' }.each{ |pr| pr.kill! }
RLPS.processes.select{ |pr| pr.name=='spectacle' }.length  # => 0


#   #is_running? method is useful in daemons
my_process = RLPS.this_process
my_process.is_running?   # => true
john_cena_process = RLPS::Process.new pid:619, name: "cena"
john_cena_process.is_running?  # => false

CLI

TL;DR: Don't. Although this gem wasn't made to be used as a CLI application, it can act as a very bad, inefficient version of Linux $ ps -e:

$ rlps

Contributing

Bug reports and pull requests are welcome on GitHub at https://github.com/nemoload/rlps.

License

The gem is available as open source under the terms of the MIT License.