managing directories of multiple linux OSs simultaneously from command line

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http://www.linuxquestions.org – Hi folks, Can one globally manage contents of one's entire hard drive from command line? It seems that I can access and manage things from file manager up to a point; I was wondering if the Command line offered greater depth of control over wider range of file management commands. Put concretely: can i, say, open and edit a file using vim while in mint OS on sda1, when the file in question is in a directory in my slackware OS on sda2? Thanks for help (HowTos)