Run this in your terminal. No really, it's safe.

file.rb

p = Enumerator.new { |y| o = (31..36).to_a-[34]; loop { y << o.first; o.shuffle! } }
c = ->(l) { "\e[1;5;#{p.next}m#{l}\e[0m" }
r = ->(s) { s.gsub(/\S/) { |l| c[l] } }
puts nil, "\t\e[34m<#{19479728.to_s(36)}>\e[0m#{r["#{[16712,8265].pack("s*")}#{ENV["USER"].upcase}"]}\e[34m</#{19479728.to_s(36)}>\e[0m", nil

file.sh

base64 -d <<<"cCA9IEVudW1lcmF0b3IubmV3IHsgfHl8IG8gPSAoMzEuLjM2KS50b19hLVszNF07IGxvb3AgeyB5IDw8IG8uZmlyc3Q7IG8uc2h1ZmZsZSEgfSB9CmMgPSAtPihsKSB7ICJcZVsxOzU7I3twLm5leHR9bSN7bH1cZVswbSIgfQpyID0gLT4ocykgeyBzLmdzdWIoL1xTLykgeyB8bHwgY1tsXSB9IH0KcHV0cyBuaWwsICJcdFxlWzM0bTwjezE5NDc5NzI4LnRvX3MoMzYpfT5cZVswbSN7clsiI3tbMTY3MTIsODI2NV0ucGFjaygicyoiKX0je0VOVlsiVVNFUiJdLnVwY2FzZX0iXX1cZVszNG08LyN7MTk0Nzk3MjgudG9fcygzNil9PlxlWzBtIiwgbmlsCg==" | ruby