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How can one make it so that compiled commands can be executed without having to prepend them with './'? For instance given the g++ compiled command a.out, executing with just 'a.out' instead of './a.out'.
You would have to add the directory where you built the command to your PATH variable. For example, if you are compiling in /home/SirTristan/neatstuff, then you would need to add /home/SirTristan/neatstuff to PATH. The other option is to tell g++ to output the executable to a directory that is in your PATH (and you have write permissions) using the -o switch.