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Kinda. First off please feel free to correct me as Im sure I will make a mistake or two in the finer details. In each commandline (@ least Unix or windows) you have a PATH variable. It tells the commandline where to look if you just enter a command. so when u enter exit, it will search locations in the PATh variable (in Windows its system32) for the command, and then execute it. That why if u want to add a command or shell script so that u can run it from anywhere, u can either dump it in a folder such as system32, or you could add its location to the path variable itself. Hope that explains your ? without too many blatant errors
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