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# ruby unshare (runshare) This tool allows to unshare Linux namespaces. The implementation is similar to the unshare(1) tool. ## Installation Add this line to your application's Gemfile: ```ruby gem 'runshare' ``` And then execute: $ bundle Or install it yourself as: $ gem install runshare ## Usage > require "runshare" > RUnshare::unshare For example: cat > test.rb require "runshare" pid = RUnshare::unshare( :clone_newpid => true, :clone_newns => true, :clone_newcgroup => true, :clone_newipc => true, :clone_newuts => true, :clone_newnet => true, :clone_newtime => true, :fork => true, :mount_proc => "/proc", # docker export $(docker create hello-world) | tar -xf - -C rootfs :root => "/tmp/rootfs" ) if pid == 0 # child puts "--- #{Process.pid}" if system("/hello") != true raise "bad" end puts "--- done" else # parent puts "-- unshare=#{pid}, pid=#{Process.pid}" puts "-- exit=#{Process.waitpid(pid)}" end ^D sudo ruby -I ./lib ./test.rb ## Quick start $ rake compile && echo 'require "runshare"; RUnshare::unshare(:clone_newuts => true)' | irb install -c tmp/x86_64-linux/runshare/2.4.10/runshare.so lib/runshare/runshare.so cp tmp/x86_64-linux/runshare/2.4.10/runshare.so tmp/x86_64-linux/stage/lib/runshare/runshare.so Switch to inspect mode. require "runshare"; RUnshare::unshare ## Ruby <2.5 If your app is single threaded and you are observing: eval:1: warning: pthread_create failed for timer: Invalid argument, scheduling broken Just ignore it with some degree of bravity. You also can silence it by setting: $VERBOSE = nil ## Development After checking out the repo, run `bin/setup` to install dependencies. Then, run `rake spec` to run the tests. You can also run `bin/console` for an interactive prompt that will allow you to experiment. To install this gem onto your local machine, run `bundle exec rake install`. To release a new version, update the version number in `version.rb`, and then run `bundle exec rake release`, which will create a git tag for the version, push git commits and tags, and push the `.gem` file to [rubygems.org](https://rubygems.org). ## Contributing Bug reports and pull requests are welcome on GitHub at https://github.com/sitano/runshare. This project is intended to be a safe, welcoming space for collaboration, and contributors are expected to adhere to the [Contributor Covenant](http://contributor-covenant.org) code of conduct. ## License The gem is available as open source under the terms of the [MIT License](https://opensource.org/licenses/MIT).

Inaba SDBM Manipulator ======================= ## Introduction Inaba SDBM Manipulator is a command line tool to manipulate SDBM database. ## Operation Environment We checked good operation within following environment. - Linux（openSUSE 12.2）・Mac OS X 10.8.2 - Ruby 1.9.3 ## Architectonics - **bin** - **inaba** :: Executable script - **doc** :: Documents generated by rdoc - **lib** - **inaba** - **manipulator.rb** :: Manipulator class - **Rakefile** :: Rakefile that is used to generate gem file - **test** - **tb_manipulator.rb** :: Unit test of Manipulator ## Depended libraries - [Hakto SDBM Safe Wrapper](http://blog.quellencode.org/post/37391766923/ruby-hakto-safe-sdbm-wrapper) - [Ariete STDOUT & STDERR Capture Module](http://blog.quellencode.org/post/37625422082/ariete-stdout-stderr-capture-module) ## Install Download inaba-x.y.z.gem, then execute following command to install Inaba. `$ sudo gem install inaba-x.y.z.gem` On the other hand, you can install from RubyGems.org to use following command. `$ sudo gem install inaba` ## Tutorial ### Configuration of environment variable Set file path of SDBM database to environment variable named $INABA_DB. If target database file is named rabbit.sdb, use following command in bash. `$ export INABA_DB="rabbit.sdb"` ### Add key value pair Use **add** command to add a value to key. `$ inaba add rabbit RABBIT` Use **list** command to show key value pairs. `$ inaba list` [rabbit]:RABBIT Add more pairs. `$ inaba add bunny BUNNY` `$ inaba add hare HARE` `$ inaba list` [rabbit]:RABBIT [bunny]:BUNNY [hare]:HARE Inaba can output a pair list with CSV format. `$ inaba csv` rabbit,RABBIT bunny,BUNNY hare,HARE Also use **keys** command to list keys. `$ inaba keys` rabbit, bunny, hare, **Values** command works listing values. `$ inaba values` RABBIT, BUNNY, HARE, Use **del** command to delete key value command. `$ inaba del rabbit` `$ inaba list` [bunny]:BUNNY [hare]:HARE **Clear** command removes all key value pairs. `$ inaba clear` ## Commands reference |コマンド |引数 |説明 | |----------|-------------|------------------------------------| |**add** |*key* *value*|Add *value* to *key* | |**del** |*key* |Delete a value associated with *key*| |**list** | |Output key value pairs | |**keys** | |Output keys | |**values**| |Output values | |**csv** | |Output pairs with CSV format | |**help** | |Output command list | ## License Inaba is distributed with MIT License. See the LICENSE file to read the detail of license. ## About Author Moza USANE [http://blog.quellencode.org/](http://blog.quellencode.org/ "") mozamimy@quellencode.org

ROS Ruby Client: rosruby ======= [ROS](http://ros.org) is Robot Operating System developed by [Willow Garage](http://www.willowgarage.com/) and open source communities. This project supports ruby ROS client. You can program robots by ruby, very easily. **Homepage**: http://otl.github.com/rosruby **Git**: http://github.com/OTL/rosruby **Author**: Takashi Ogura **Copyright**: 2012 **License**: new BSD License **Latest Version**: 0.2.0 Requirements ---------- - ruby (1.8.x/1.9.x) - ROS (electric/fuerte) - ROS requires python2.7 or more libraries Let's start --------------- Install ROS and ruby first. ROS document is [http://ros.org/wiki/ROS/Installation](http://ros.org/wiki/ROS/Installation) . You can install ruby by apt. ```bash $ sudo apt-get install ruby ``` Download rosruby into your ROS_PACKAGE_PATH. ````bash $ git clone git://github.com/OTL/rosruby.git ``` please add RUBYLIB environment variable, like below (if you are using bash). ```bash $ echo "export RUBYLIB=`rospack find rosruby`/lib" >> ~/.bashrc $ source ~/.bashrc ``` To use with precompiled electric release ----------------------- If you are using precompiled ROS distro, use the msg/srv generation script (rosruby_genmsg.py) If you are using ROS from source, it requires just recompile the msg/srv packages by rosmake rosruby. ```bash $ rosrun rosruby rosruby_genmsg.py ``` This converts msg/srv to .rb which is needed by sample programs. If you want to make other packages, add package names for args. For example, ```bash $ rosrun rosruby rosruby_genmsg.py geometry_msgs nav_msgs ``` Sample Source -------------- ## Subscriber ```ruby #!/usr/bin/env ruby require 'ros' require 'std_msgs/String' node = ROS::Node.new('/rosruby/sample_subscriber') node.subscribe('/chatter', Std_msgs::String) do |msg| puts "message come! = \'#{msg.data}\'" end while node.ok? node.spin_once sleep(1) end ``` ## Publisher ```ruby #!/usr/bin/env ruby require 'ros' require 'std_msgs/String' node = ROS::Node.new('/rosruby/sample_publisher') publisher = node.advertise('/chatter', Std_msgs::String) msg = Std_msgs::String.new i = 0 while node.ok? msg.data = "Hello, rosruby!: #{i}" publisher.publish(msg) sleep(1.0) i += 1 end ``` Note ---------------- Ruby requires 'Start with Capital letter' for class or module names. So please use **S**td_msgs::String class instead of **s**td_msgs::String. Try Publish and Subscribe ---------------------- You needs three terminal as it is often for ROS users. Then you run roscore if is not running. ```bash $ roscore ``` run publisher sample ```bash $ rosrun rosruby sample_publisher.rb ``` run subscription sample ```bash $ rosrun rosruby sample_subscriber.rb ``` you can check publication by using rostopic. ```bash $ rostopic list $ rostopic echo /chatter ``` Try Service? ---------------------- ```bash $ rosrun rosruby add_two_ints_server.rb ``` run client with args ('a' and 'b' for roscpp_tutorials/TwoInts) ```bash $ rosrun rosruby add_two_ints_client.rb 10 20 ``` and more... ---------------------- You need more tools for testing, generating documentations. ```bash $ sudo apt-get install rake gem $ sudo gem install yard redcarpet simplecov ``` do all tests ------------------------- run roscore if is not running. ```bash $ roscore ``` and run the unit tests. ```bash $ roscd rosruby $ rake test ``` documents -------------------------- you can generate API documents using yard. Document generation needs yard and redcarpet. You can install these by gem command like this. ```bash $ gem install yard redcarpet ``` Then try to generate documentds. ```bash $ rake yard ``` You can access to the generated documents from [here](http://otl.github.com/rosruby/doc/).

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