acro5piano

irb(main):004:0> require 'mechanize'
irb(main):005:0> agent = Mechanize.new
irb(main):006:0> p agent.get('google.co.jp')
ArgumentError: absolute URL needed (not google.co.jp)
        from /home/hogeuser/.rbenv/versions/2.2.0-rc1/lib/ruby/gems/2.2.0/gems/mechanize-2.7.3/lib/mechanize/http/agent.rb:651:in `resolve'
        from /home/hogeuser/.rbenv/versions/2.2.0-rc1/lib/ruby/gems/2.2.0/gems/mechanize-2.7.3/lib/mechanize/http/agent.rb:223:in `fetch'
        from /home/hogeuser/.rbenv/versions/2.2.0-rc1/lib/ruby/gems/2.2.0/gems/mechanize-2.7.3/lib/mechanize.rb:440:in `get'
        from (irb):6
        from /home/hogeuser/.rbenv/versions/2.2.0-rc1/bin/irb:11:in `<main>'

acro5piano

cat <<EOF > test.txt
a b c
d e f
EOF

# cutを使う場合
cat test.txt | cut -d ' ' -f 1,3
#=> a c
#=> d f

acro5piano

k-gosho@kgosho-ubuntu ~ % cat languages.txt
id,name
1,"Ruby"
2,"Perl"
3,"PHP"

acro5piano

require_relative './secure_password'

class ActiveRecord
  extend SecurePassword
end

acro5piano

gem 'sinatra' , '1.4.6'
group :production do
  gem 'thin'
end

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mkdir /tmp/a
cd /tmp/a

acro5piano

# この関数を~/.bash_aliasesなどに書いておく
alarm(){
    echo "echo $1 | cowsay | wall" | at $2
}

acro5piano

alarm(){
    echo "tmux detach-client; sleep 2; cowsay_to_single_pts $1" | at $2
}

acro5piano

sudo npm install -g markdown-styles

acro5piano

# Render a template file
#
# $ cat template.txt
#   ==========================
#   Hello, I'm {{ name }}.
#   It's {{ wheather }} wheather today.
#   ==========================
#
# $ util::render_template template.txt 'name=bashist&wheather=good'
#   ==========================