Extract directly to /usr/local

Author: certik

ci/install_cmake.sh

@@ -2,14 +2,6 @@
 
 set -ex
 
-wget https://github.com/Kitware/CMake/releases/download/v3.16.3/cmake-3.16.3-Linux-x86_64.tar.gz
-tar xzf cmake-3.16.3-Linux-x86_64.tar.gz
-sudo rm -f /usr/local/bin/cmake
-sudo rm -f /usr/bin/cmake
-sudo ln -s ${HOME}/cmake-3.16.3-Linux-x86_64/bin/cmake /usr/bin/
-echo $PATH
-ls -l /usr/bin/cmake
-file /usr/bin/cmake
+wget -qO- https://github.com/Kitware/CMake/releases/download/v3.16.3/cmake-3.16.3-Linux-x86_64.tar.gz | sudo tar xz --strip=1 -C /usr/local/
 which cmake
-/usr/bin/cmake --version
 cmake --version