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echo $PATH to see what is in your PATH.
Always use tab to complete file names. If the file is in the current directory or is in your PATH, tab will do auto complete.
Always remember where you are, on a Unix enviornment!
So many options...
When running scripts and software tools, all the inputs you provide to it are called arguments or parameters or options. Each tool/script can be a little different in how it takes its arguments. But typically, they follow a structure.
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