SHELL: line 0: syntax error: bad substitution SHELL: line 0: syntax error: bad substitution SHELL: line 0: syntax error: bad substitution 0 SHELL: line 0: 1: bad variable name SHELL: line 0: 1: bad variable name SHELL: line 0: 1: bad variable name SHELL: line 0: 1: bad variable name _aa _aa _aa _aa _ _ _ _word _word _ _ _ _ _word _fff _fff _fff _fff _fff