Revision as of 02:48, November 4, 2014

Bash

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This is the ebuild for bash, the standard shell for Funtoo Linux systems.

Bash is the GNU Project's Bourne Again SHell, a complete implementation of the IEEE POSIX and Open Group shell specification with interactive command line editing, job control on architectures that support it, csh-like features such as history substitution and brace expansion, and a slew of other features. [1]

Learning Bash

The following articles, written originally for IBM developerWorks by Daniel Robbins, serve as an excellent introduction to the bash shell:

Moving on Command Line

Shortcut	Description
`Tab`	Autocomplete
`Ctrl + r`	Search as you type from lastlog
`Ctrl + a`	Move to the start of line
`Ctrl + e`	Move to the end of line
`Ctrl + k`	Cut from cursor to the end of line
`Ctrl + w`	Cut from cursor to the previous whitespace
`Ctrl + c`	Clear line
`Ctrl + l`	Clear screen
`Alt + f`	Move one word forward
`Alt + b`	Move one word backwards
`Alt + d`	Cut from cursor to the end of word
`Alt + backspace`	Cut from cursor to the start of word

Bash Completion

See bash completion page.

Configuration Files

~/.bashrc

~/.bashrc gets loaded on bash startup. You can source files, put aliases, functions and export variables there.

~/.bashrc (bash source code) - bash runtime configuration

source /etc/profile.d/bash-completion.sh

export EDITOR="vim"

alias mv='mv -v'
alias cp='cp -v'
alias rm='rm -v'

alias e='emerge'
alias eu='emerge -uavDN --with-bdeps=y @world'

alias used='cat  ~/.bash_history | sort | uniq -c | sort -n'

calculator() {
        echo "$@" | bc
}

media

@@ Line 1: / Line 1: @@
 {{Ebuild
-|Summary=Centralized Ruby extension management system
+|Summary=The standard GNU Bourne-again shell.
-|CatPkg=dev-ruby/ruby
+|CatPkg=app-shells/bash
 |Maintainer=
-|Homepage=https://www.ruby-lang.org
 }}
+This is the ebuild for <tt>bash</tt>, the standard shell for Funtoo Linux systems.
-Ruby is a programming language with its own package management system to extend the language.
+'''Bash''' is the GNU Project's ''Bourne Again SHell'', a complete implementation of the IEEE POSIX and Open Group shell specification with interactive command line editing, job control on architectures that support it, csh-like features such as history substitution and brace expansion, and a slew of other features. [http://tiswww.case.edu/php/chet/bash/bashtop.html]
-Rubygems is a package management system to extend the ruby language.
+== Learning Bash ==
-Gems are packaged wonky in portage so this page will explain how to work with rubygems rather than fight it.  Arch wiki outlines a similar method.
+The following articles, written originally for IBM developerWorks by Daniel Robbins, serve as an excellent introduction to the bash shell:
-https://wiki.archlinux.org/index.php/Ruby#RubyGems
+* [[Bash by Example, Part 1]]
+* [[Bash by Example, Part 2]]
+* [[Bash by Example, Part 3]]
-Emerge ruby & rubygems:
+== Moving on Command Line ==
-<console>###i## emerge ruby rubygems</console>
-Remove conflicting gems:
+{|class="table table-striped"
-<console>###i## emerge -C dev-ruby/rake dev-ruby/racc dev-ruby/json dev-ruby/rdoc</console>
+|| Shortcut || Description
+|-
+|| <code>Tab</code> || Autocomplete
+|-
+|| <code>Ctrl + r</code> || Search as you type from lastlog
+|-
+|| <code>Ctrl + a</code> || Move to the start of line
+|-
+|| <code>Ctrl + e</code> || Move to the end of line
+|-
+|| <code>Ctrl + k</code> || Cut from cursor to the end of line
+|-
+|| <code>Ctrl + w</code> || Cut from cursor to the previous whitespace
+|-
+|| <code>Ctrl + c</code> || Clear line
+|-
+|| <code>Ctrl + l</code> || Clear screen
+|-
+||<code>Alt + f</code> || Move one word forward
+|-
+|| <code>Alt + b</code> || Move one word backwards
+|-
+|| <code>Alt + d</code> || Cut from cursor to the end of word
+|-
+|| <code>Alt + backspace</code> || Cut from cursor to the start of word
-Flush conflicting gems bad specs:
+|}
-<console>###i## mv /usr/local/lib64/ruby/gems/2.1.0/specifications/ /usr/local/lib64/ruby/gems/2.1.0/specifications.backup</console>
+== Bash Completion ==
+See [[Package:Bash completion|bash completion page]].
-Fetch gems via rubygems:
+== Configuration Files ==
-<console>###i## gem install rdoc json rake racc</console>
+=== ~/.bashrc ===
+<code>~/.bashrc</code> gets loaded on bash startup. You can source files, put aliases, functions and export variables there.
+{{file|name=~/.bashrc|lang=bash|desc=bash runtime configuration|body=
+source /etc/profile.d/bash-completion.sh
-<console>###i## rubygems-update</console>
+export EDITOR="vim"
-update gem system:
+alias mv='mv -v'
-<console>###i## update_rubygems
+alias cp='cp -v'
-###i## gem update --system
+alias rm='rm -v'
-###i## gem pristine --all
-</console>
-Now you're ready to use gem to manage gems.
+alias e='emerge'
+alias eu='emerge -uavDN --with-bdeps=y @world'
-To add gems to your path:
+alias used='cat  ~/.bash_history {{!}} sort {{!}} uniq -c {{!}} sort -n'
-{{file|name=$HOME/.bashrc|desc=add gem bin directory to your path|body=
-PATH="$(ruby -rubygems -e 'puts Gem.user_dir')/bin:$PATH"
-}}
-==ruby on rails==
-<console>###i## gem install rails
-###i## rails new testproject
-###i## cd testproject
-###i## bundle install</console>
-==puma==
-puma is a fast web server for ruby on rails.
-To enable puma in your project:
+calculator() {
-{{file|name=$HOME/testproject/Gemfile|desc=add puma gem to your rails application|body=
+        echo "$@" {{!}} bc
-gem 'puma'
+}
 }}
-To pull in puma:
-<console>###i## bundle install</console>
-{{file|name=$HOME/testproject/config/puma.rb|desc=puma configuration file|body=
-workers Integer(ENV['PUMA_WORKERS'] {{!}}{{!}} 3)
-threads Integer(ENV['MIN_THREADS']  {{!}}{{!}} 1), Integer(ENV['MAX_THREADS'] {{!}}{{!}} 16)
-preload_app!
-rackup      DefaultRackup
-port        ENV['PORT']     {{!}}{{!}} 3000
-environment ENV['RACK_ENV'] {{!}}{{!}} 'development'
-on_worker_boot do
-  # worker specific setup
-  ActiveSupport.on_load(:active_record) do
-    config = ActiveRecord::Base.configurations[Rails.env] {{!}}{{!}}
-                Rails.application.config.database_configuration[Rails.env]
-    config['pool'] = ENV['MAX_THREADS'] {{!}}{{!}} 16
-    ActiveRecord::Base.establish_connection(config)
-  end
-end
-}}
-to start puma:
-<console>###i## bundle exec puma</console>
-or if you added gems bin dir to your path
-<console>###i## puma</console>
-a generic puma init script can be found here
-https://gist.github.com/666threesixes666/d8bca7f67439763d3e94
 == media ==
-{{#widget:YouTube|playlist=PL1512BD72E7C9FFCA}}
+{{#widget:YouTube|playlist=PLDOiVunkOLsEJF2toupqFubpWtVasDqOg}}
-[[Category:Programming language]]
 {{EbuildFooter}}

Difference between pages "Package:Ruby" and "Package:Bash"