My experience has been that learning Linux/unix command line is …

a much more in-depth/effective way to understand networking in actual practice and implementation? I have been in computers since the early 80’s and used Unix/Linux environment very little during that period. But over the last few years, I have been working/learning with various distros of Linux (desktop & server) and have learned more core knowledge about networking than I have in the full 20+ years I have been involved in IT.