gem1.8 or gem command is the front end to RubyGems – a sophisticated package manager for Ruby. You need to install the following packages:
[a] ruby – An interpreter of object-oriented scripting language package.
[b] ruby1.8-dev – Header files for compiling extension modules for the Ruby 1.8 package.
[c] rubygems1.8 (rubygems) – Package management framework for Ruby libraries/applications.
[d] build-essential – This package contains an informational list of packages which are considered essential for building Debian or Ubuntu packages including gcc compiler, make and other required tools. See how to install build-essential for more information.
Installation
Open a terminal and type the following command:
$ sudo apt-get install rubygems build-essential
OR
$ sudo apt-get install rubygems
OR
$ sudo apt-get install ruby1.8-dev rubygems1.8
Sample outputs:
Reading package lists... Done Building dependency tree Reading state information... Done The following extra packages will be installed: ruby1.8-dev rubygems1.8 Suggested packages: rubygems-doc The following NEW packages will be installed: ruby1.8-dev rubygems rubygems1.8 0 upgraded, 3 newly installed, 0 to remove and 4 not upgraded. Need to get 1,154 kB of archives. After this operation, 3,322 kB of additional disk space will be used. Do you want to continue [Y/n]? y Get:1 http://mirrors.kernel.org/debian/ stable/main ruby1.8-dev amd64 1.8.7.302-2squeeze1 [886 kB] Get:2 http://mirrors.kernel.org/debian/ stable/main rubygems1.8 all 1.3.7-3 [202 kB] Get:3 http://mirrors.kernel.org/debian/ stable/main rubygems all 1.3.7-3 [66.7 kB] Fetched 1,154 kB in 4s (270 kB/s) Selecting previously deselected package ruby1.8-dev. (Reading database ... 338544 files and directories currently installed.) Unpacking ruby1.8-dev (from .../ruby1.8-dev_1.8.7.302-2squeeze1_amd64.deb) ... Selecting previously deselected package rubygems1.8. Unpacking rubygems1.8 (from .../rubygems1.8_1.3.7-3_all.deb) ... Selecting previously deselected package rubygems. Unpacking rubygems (from .../rubygems_1.3.7-3_all.deb) ... Processing triggers for man-db ... Setting up ruby1.8-dev (1.8.7.302-2squeeze1) ... Setting up rubygems1.8 (1.3.7-3) ... Setting up rubygems (1.3.7-3) ...
A note about Ruby version 1.9.x
To install Ruby version 1.9.1 under Debian Linux v6.x, enter:
$ sudo apt-get install ruby1.9.1-full ruby1.9.1-dev rubygems1.9.1
Sample outputs:
Reading package lists... Done Building dependency tree Reading state information... Done Note, selecting 'ruby1.9.1' instead of 'rubygems1.9.1' The following extra packages will be installed: libruby1.9.1 libruby1.9.1-dbg libtcltk-ruby1.9.1 libyaml-0-2 ri1.9.1 ruby1.9.1 ruby1.9.1-examples tk8.4 Suggested packages: graphviz ruby1.9.1-elisp The following NEW packages will be installed: libruby1.9.1 libruby1.9.1-dbg libtcltk-ruby1.9.1 libyaml-0-2 ri1.9.1 ruby1.9.1 ruby1.9.1-dev ruby1.9.1-examples ruby1.9.1-full tk8.4 0 upgraded, 10 newly installed, 0 to remove and 4 not upgraded. Need to get 17.8 MB of archives. After this operation, 89.5 MB of additional disk space will be used. Do you want to continue [Y/n]? y Get:1 http://mirrors.kernel.org/debian/ stable/main libyaml-0-2 amd64 0.1.3-1 [54.6 kB] Get:2 http://mirrors.kernel.org/debian/ stable/main libruby1.9.1 amd64 1.9.2.0-2 [4,517 kB] Get:3 http://mirrors.kernel.org/debian/ stable/main tk8.4 amd64 8.4.19-4 [1,053 kB] Get:4 http://mirrors.kernel.org/debian/ stable/main libtcltk-ruby1.9.1 amd64 1.9.2.0-2 [2,502 kB] Get:5 http://mirrors.kernel.org/debian/ stable/main ruby1.9.1 amd64 1.9.2.0-2 [754 kB] Get:6 http://mirrors.kernel.org/debian/ stable/main ri1.9.1 all 1.9.2.0-2 [2,093 kB] Get:7 http://mirrors.kernel.org/debian/ stable/main ruby1.9.1-dev amd64 1.9.2.0-2 [1,852 kB] Get:8 http://mirrors.kernel.org/debian/ stable/main ruby1.9.1-examples all 1.9.2.0-2 [780 kB] Get:9 http://mirrors.kernel.org/debian/ stable/main libruby1.9.1-dbg amd64 1.9.2.0-2 [3,469 kB] Get:10 http://mirrors.kernel.org/debian/ stable/main ruby1.9.1-full all 1.9.2.0-2 [718 kB] Fetched 17.8 MB in 39s (447 kB/s) Selecting previously deselected package libyaml-0-2. (Reading database ... 338976 files and directories currently installed.) Unpacking libyaml-0-2 (from .../libyaml-0-2_0.1.3-1_amd64.deb) ... Selecting previously deselected package libruby1.9.1. Unpacking libruby1.9.1 (from .../libruby1.9.1_1.9.2.0-2_amd64.deb) ... Selecting previously deselected package tk8.4. Unpacking tk8.4 (from .../tk8.4_8.4.19-4_amd64.deb) ... Selecting previously deselected package libtcltk-ruby1.9.1. Unpacking libtcltk-ruby1.9.1 (from .../libtcltk-ruby1.9.1_1.9.2.0-2_amd64.deb) ... Selecting previously deselected package ruby1.9.1. Unpacking ruby1.9.1 (from .../ruby1.9.1_1.9.2.0-2_amd64.deb) ... Selecting previously deselected package ri1.9.1. Unpacking ri1.9.1 (from .../ri1.9.1_1.9.2.0-2_all.deb) ... Selecting previously deselected package ruby1.9.1-dev. Unpacking ruby1.9.1-dev (from .../ruby1.9.1-dev_1.9.2.0-2_amd64.deb) ... Selecting previously deselected package ruby1.9.1-examples. Unpacking ruby1.9.1-examples (from .../ruby1.9.1-examples_1.9.2.0-2_all.deb) ... Selecting previously deselected package libruby1.9.1-dbg. Unpacking libruby1.9.1-dbg (from .../libruby1.9.1-dbg_1.9.2.0-2_amd64.deb) ... Selecting previously deselected package ruby1.9.1-full. Unpacking ruby1.9.1-full (from .../ruby1.9.1-full_1.9.2.0-2_all.deb) ... Processing triggers for man-db ... Processing triggers for menu ... Setting up libyaml-0-2 (0.1.3-1) ... Setting up libruby1.9.1 (1.9.2.0-2) ... Setting up tk8.4 (8.4.19-4) ... update-alternatives: using /usr/bin/wish8.4 to provide /usr/bin/wish (wish) in auto mode. Setting up libtcltk-ruby1.9.1 (1.9.2.0-2) ... Setting up ruby1.9.1 (1.9.2.0-2) ... Setting up ri1.9.1 (1.9.2.0-2) ... Setting up ruby1.9.1-dev (1.9.2.0-2) ... Setting up ruby1.9.1-examples (1.9.2.0-2) ... Setting up libruby1.9.1-dbg (1.9.2.0-2) ... Setting up ruby1.9.1-full (1.9.2.0-2) ... Processing triggers for menu ...
Verify that gem is working
Type the following command:
$ gem env
Sample outputs:
RubyGems Environment:
- RUBYGEMS VERSION: 1.3.7
- RUBY VERSION: 1.8.7 (2010-08-16 patchlevel 302) [x86_64-linux]
- INSTALLATION DIRECTORY: /var/lib/gems/1.8
- RUBY EXECUTABLE: /usr/bin/ruby1.8
- EXECUTABLE DIRECTORY: /var/lib/gems/1.8/bin
- RUBYGEMS PLATFORMS:
- ruby
- x86_64-linux
- GEM PATHS:
- /var/lib/gems/1.8
- /home/vivek/.gem/ruby/1.8
- GEM CONFIGURATION:
- :update_sources => true
- :verbose => true
- :benchmark => false
- :backtrace => false
- :bulk_threshold => 1000
- REMOTE SOURCES:
- http://rubygems.org/
How do I use rybygems command?
You need to use the gem or gem1.8 or gem1.9.1 command to install packages for ruby.
Install syslog-logger
Install syslog-logger from local directory or remote server:
$ sudo gem install syslog-logger
Install syslog-logger from remote server:
$ gem install syslog-logger --remote
Search gems
Final local gems whose name begins with ‘A’:
gem list A
List local and remote gems whose name contains ‘syslog’:
$ gem search syslog --both
List only remote gems whose name contains ‘syslog’:
$ gem search syslog --remote
Uninstall / delete ‘syslog-logger’
Type the following command:
$ sudo gem uninstall syslog-logger
Update all gems on your system
Type the following command
$ sudo gem update
References
- man pages – gem, sudo, and apt-get
- The RubyGems bookshelf
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1 comment
Hi,
I hope this is the first of many articles about Ruby.
Thanks,
Astorre