自分のコンピュータにインストールされていた、gemリストと、既存のgemを全アンインストールするスクリプト

gemlist.txt

actionmailer (4.2.4, 4.2.2)
actionpack (4.2.4, 4.2.2, 4.2.1)
actionview (4.2.4, 4.2.2, 4.2.1)
activejob (4.2.4, 4.2.2)
activemodel (4.2.4, 4.2.2, 4.2.1)
activerecord (4.2.4, 4.2.2)
activesupport (4.2.4, 4.2.2, 4.2.1)
addressable (2.3.8)
arel (6.0.3)
ast (2.2.0, 2.1.0)
astrolabe (1.3.1)
aws-sdk (2.1.35)
aws-sdk-core (2.1.35)
aws-sdk-resources (2.1.35)
backports (3.6.7)
bcrypt (3.1.10)
bigdecimal (1.2.7, 1.2.0)
binding_of_caller (0.7.2)
bootstrap-sass (3.2.0.0)
buftok (0.2.0)
builder (3.2.2)
bundler (1.10.6)
byebug (8.2.1, 6.0.2, 3.4.0)
CFPropertyList (2.3.2, 2.2.8)
charlock_holmes (0.7.3)
chunky_png (1.3.4)
coffee-rails (4.1.1, 4.1.0)
coffee-script (2.4.1)
coffee-script-source (1.10.0, 1.9.1.1)
colorator (0.1)
columnize (0.9.0)
compass (1.0.3)
compass-core (1.0.3)
compass-import-once (1.0.5)
compass-rails (2.0.5)
concurrent-ruby (1.0.0)
crass (1.0.2)
daemons (1.2.3)
debug_inspector (0.0.2)
debugger-linecache (1.2.0)
devise (3.5.2)
domain_name (0.5.25)
em-synchrony (1.0.4)
equalizer (0.0.10)
erubis (2.7.0)
escape_utils (1.1.0)
event_emitter (0.2.5)
eventmachine (1.0.8)
execjs (2.6.0)
faraday (0.9.2)
faye-websocket (0.10.0)
ffi (1.9.10)
foreman (0.78.0)
gemoji (2.1.0)
github-linguist (4.6.4)
globalid (0.3.6)
greenmat (3.2.2.1)
hike (2.1.3, 1.2.3)
hiredis (0.6.0)
hpricot (0.8.6)
html-pipeline (2.2.1)
html2slim (0.2.0)
http (0.9.8)
http-cookie (1.0.2)
http-form_data (1.0.1)
http_parser.rb (0.6.0)
i18n (0.7.0)
io-console (0.4.2)
jbuilder (2.3.2, 2.2.3)
jekyll (3.0.2)
jekyll-sass-converter (1.4.0)
jekyll-watch (1.3.1)
jmespath (1.1.3)
jpstock (0.6.7)
jquery-rails (4.0.5, 4.0.3)
json (1.8.3, 1.7.7)
kgio (2.10.0)
kramdown (1.9.0)
libv8 (4.5.95.5 x86_64-darwin-14, 3.16.14.11 x86_64-darwin-14)
libxml-ruby (2.8.0, 2.6.0)
liquid (3.0.6)
listen (3.0.5)
loofah (2.0.3)
macaddr (1.7.1)
mail (2.6.3)
mechanize (2.7.4, 2.7.3)
mem (0.1.5)
memoizable (0.4.2)
mercenary (0.3.5)
mime-types (2.99, 2.6.2)
mini_portile (0.6.2)
mini_portile2 (2.0.0)
minitest (5.8.3, 5.8.1, 4.3.2)
multi_json (1.11.2)
multipart-post (2.0.0)
mysql (2.9.1)
mysql2 (0.4.3)
naught (1.1.0)
net-http-digest_auth (1.4)
net-http-persistent (2.9.4)
nokogiri (1.6.7.1, 1.6.6.2, 1.5.6)
nokogumbo (1.4.1)
ntlm-http (0.1.1)
orm_adapter (0.5.0)
parallel (1.6.1)
parser (2.3.0.6, 2.2.3.0)
posix-spawn (0.3.11)
power_assert (0.2.4)
powerpack (0.1.1)
psych (2.0.15, 2.0.0)
pygments.rb (0.6.3)
qiita-markdown (0.10.0)
rack (1.6.4)
rack-protection (1.5.3)
rack-test (0.6.3)
rails (4.2.4, 4.2.2)
rails-deprecated_sanitizer (1.0.3)
rails-dom-testing (1.0.7)
rails-html-sanitizer (1.0.2)
railties (4.2.4, 4.2.2)
rainbow (2.0.0)
raindrops (0.15.0)
rake (10.4.2, 0.9.6)
rb-fsevent (0.9.6)
rb-inotify (0.9.5)
rdoc (4.2.1, 4.2.0, 4.0.0)
rdoc-data (4.0.1)
redcarpet (3.3.4)
redis (3.2.2)
redis-objects (1.2.1)
ref (2.0.0, 1.0.5)
responders (2.1.0)
rouge (1.10.1)
rubocop (0.37.2, 0.34.2)
ruby-progressbar (1.7.5)
rugged (0.24.0b0)
safe_yaml (1.0.4)
sanitize (4.0.0)
sass (3.4.20, 3.4.19)
sass-rails (5.0.4, 5.0.2)
sdoc (0.4.1, 0.4.0)
simple_oauth (0.3.1)
sinatra (1.4.6)
sinatra-contrib (1.4.6)
slim (3.0.6)
slim-rails (3.0.1)
slop (3.6.0)
sorry_yahoo_finance (0.4.2)
spring (1.6.1, 1.4.0)
sprockets (3.5.2, 3.4.0, 2.11.0)
sprockets-rails (3.0.0, 2.3.3)
sqlite3 (1.3.11, 1.3.7)
systemu (2.6.5)
temple (0.7.6)
test-unit (3.1.5, 2.0.0.0)
therubyracer (0.12.2)
thin (1.6.4)
thor (0.19.1)
thread_safe (0.3.5)
tilt (2.0.1, 1.4.1)
turbolinks (2.5.3, 2.3.0)
twitter (5.15.0)
tzinfo (1.2.2)
uglifier (2.7.2, 2.5.3)
unf (0.1.4)
unf_ext (0.0.7.1)
unicode-display_width (0.3.1)
unicorn (4.9.0)
uuid (2.3.8)
warden (1.2.3)
web-console (2.2.1)
webrobots (0.1.1)
websocket (1.2.2)
websocket-client-simple (0.3.0)
websocket-driver (0.6.3)
websocket-extensions (0.1.2)
websocket-rails (0.7.0)
yajl-ruby (1.2.1)

gemuninstall.sh

gem list | \
cut -d" " -f1 | \
sed -e "/test-unit/d" | \
sed -e "/rdoc/d" | \
sed -e "/rake/d" | \
sed -e "/psych/d" | \
sed -e "/minitest/d" | \
sed -e "/io-console/d" | \
sed -e "/json/d" | \
sed -e "/bigdecimal/d" | \
sudo xargs gem uninstall -aIx