Working with Julia's shell
We started with Julia's shell in the previous section (refer to the preceding two screenshots) to verify the correctness of the installation, by issuing the julia command in a terminal session. The shell or REPL is Julia's working environment, where you can interact with the Just in Time (JIT) compiler to test out pieces of code. When satisfied, you can copy and paste this code into a file with a .jl extension, such as program.jl. Alternatively, you can continue the work on this code from within a text editor or an IDE, such as the ones we will point out later in this chapter. After the banner with Julia's logo has appeared, you get a julia> prompt for the input. To end this session, and get to the OS Command Prompt, ...
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