igli 1193220768 learn "At its base, a shell is simply a macro processor that executes commands. The term macro processor means functionality where text and symbols are expanded to create larger expressions." http://tiswww.tis.case.edu/~chet/bash/bashref.html emanuele6 1655975173 forget emanuele6 1655975175 learn "At its base, a shell is simply a macro processor that executes commands. The term macro processor means functionality where text and symbols are expanded to create larger expressions." https://tiswww.case.edu/php/chet/bash/bashref.html