anchor.diff:      "erl +V 2>&1 | head -n 1" \
       "gcc --version | head -n 1" \
       "gdc --version | head -n 1" \
  +	"gem -v | head -n 1" \
       "ghc --version | head -n 1" \
       "g++ --version | head -n 1" \
       "go version | head -n 1" \
  
positive.code:     "swipl --version | head -n 1" \
      "tsc -v | head -n 1" \
      "xbuild --verison | head -n 1" \
      > /home/aicomp/show_versions \
    && cat /home/aicomp/show_versions \
    && rm -rf /home/aicomp/show_versions.sh /home/aicomp/show_versions
  
negative.code:     mono-xbuild \
      nodejs \
      ocaml-nox \
      python python-pip python-numpy python-scipy \
      python3 python3-pip python3-numpy python3-scipy \
      perl \
      php \
      swi-prolog \
      ruby rbenv ruby-build \
      rustc \
    && apt-get clean -y \
    && npm install -g \
  