cd banister-pry-29f710d sudo rake gems cd pkg sudo gem install pry sudo gem install --local pry-0.9.2.gem
cd ../bin sudo cp pry /usr/local/bin sudo chmod 755 /usr/local/bin/pry
Linux の場合 pry コマンドで起動する.
1 + 2 + 3 1234567890123456789 + 1234567890123456789
include Math sin(1.57) sqrt(2) log(10)
x = 100 y = 200 x + y