Some of us remember running applications from the command line. These were not the “does one thing well”, POSIX compliant, programmer/admin facing tools you sti

Some of us remember running applications from the command line. These were not the “does one thing well”, POSIX compliant, programmer/admin facing tools you still find in *nix these days. These were typically very limited, weird REPL sort of things where you might have eight or ten or fifty very domain specific commands that didn’t approach a Turing complete language. There was no other way to use the program other than the weird REPL that was provided.