make && make install simple explanation

./configure configure
the environment make means to compile. Is to compile the source package into a binary executable file
make install means installation.
 
make && make install means:

  1: make and make install are two commands. After you generate a Makefile in ./configuration, compile and install;
  2: Along with && there is ||, but the meaning is different, && is And, || is or;
  3: make && make install means to execute make if no error occurs, execute make install