llvm_install

// yes this is vulnerable to command injection,
// because if you want to paste bash code to download a linux wannacry port into the llvm_version arg, that's your prerogative.
llvm_version=process.argv[2];
exec=require("child_process").exec;
var install_script = `
sudo apt-get update -y && apt-get install -y clang-${llvm_version} libclang${llvm_version}-dev libclang-common-${llvm_version}-dev clang-format-${llvm_version} &&\
sudo update-alternatives --install \
        /usr/bin/llvm-config       llvm-config      /usr/bin/llvm-config-${llvm_version}  200 \
--slave /usr/bin/llvm-ar           llvm-ar          /usr/bin/llvm-ar-${llvm_version} \
--slave /usr/bin/llvm-as           llvm-as          /usr/bin/llvm-as-${llvm_version} \
--slave /usr/bin/llvm-bcanalyzer   llvm-bcanalyzer  /usr/bin/llvm-bcanalyzer-${llvm_version} \
--slave /usr/bin/llvm-cov          llvm-cov         /usr/bin/llvm-cov-${llvm_version} \
--slave /usr/bin/llvm-diff         llvm-diff        /usr/bin/llvm-diff-${llvm_version} \
--slave /usr/bin/llvm-dis          llvm-dis         /usr/bin/llvm-dis-${llvm_version} \
--slave /usr/bin/llvm-dwarfdump    llvm-dwarfdump   /usr/bin/llvm-dwarfdump-${llvm_version} \
--slave /usr/bin/llvm-extract      llvm-extract     /usr/bin/llvm-extract-${llvm_version} \
--slave /usr/bin/llvm-link         llvm-link        /usr/bin/llvm-link-${llvm_version} \
--slave /usr/bin/llvm-mc           llvm-mc          /usr/bin/llvm-mc-${llvm_version} \
--slave /usr/bin/llvm-mcmarkup     llvm-mcmarkup    /usr/bin/llvm-mcmarkup-${llvm_version} \
--slave /usr/bin/llvm-nm           llvm-nm          /usr/bin/llvm-nm-${llvm_version} \
--slave /usr/bin/llvm-objdump      llvm-objdump     /usr/bin/llvm-objdump-${llvm_version} \
--slave /usr/bin/llvm-ranlib       llvm-ranlib      /usr/bin/llvm-ranlib-${llvm_version} \
--slave /usr/bin/llvm-readobj      llvm-readobj     /usr/bin/llvm-readobj-${llvm_version} \
--slave /usr/bin/llvm-rtdyld       llvm-rtdyld      /usr/bin/llvm-rtdyld-${llvm_version} \
--slave /usr/bin/llvm-size         llvm-size        /usr/bin/llvm-size-${llvm_version} \
--slave /usr/bin/llvm-stress       llvm-stress      /usr/bin/llvm-stress-${llvm_version} \
--slave /usr/bin/llvm-symbolizer   llvm-symbolizer  /usr/bin/llvm-symbolizer-${llvm_version} \
--slave /usr/bin/llvm-tblgen       llvm-tblgen      /usr/bin/llvm-tblgen-${llvm_version} &&\
sudo update-alternatives \
      --install /usr/bin/clang   clang   /usr/bin/clang-${llvm_version}     50 \
      --slave   /usr/bin/clang++ clang++ /usr/bin/clang++-${llvm_version}  \
      --slave   /usr/bin/lldb    lldb    /usr/bin/lldb-${llvm_version} \
      --slave   /usr/bin/lldb-server lldb-server /usr/bin/lldb-server-${llvm_version}
`
exec(install_script, (error, stdout, stderr) => {
  if (error) {
    process.stderr.write(`${error}`);
    process.exit();
  }
  process.stdout.write(`${stdout}`);
  process.stderr.write(`stderr: ${stderr}`);
});