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wgetand I do no know how toCreate a .netrc fileandCreate a cookie fileas recommended by the first link I post in the question. Could you also take a look? I have edited the question. Thanks a lot.touchis a program, it changes the timestamp of a file (and creates a file if it doesn't exist). The tutorial link seems to have comments mixed in with commands, so it's not super clear what they want typed & what they're just talking about, but always look for & read amanpage for new commands - sometimes there areinfopages too that may be different. Be careful copying & pasting in commands you're unsure of, some can do strange or unwanted things (but NASA should be a safe enough site to not worry much)manpage, what is themanpage? Is it a tutorial or something else?manis "an interface to the on-line reference manuals", almost every terminal command has a man page that says what the command does & how to use it. I think Cygwin should have the man pages, and here's their FAQ for Where's the documentation?