[zeus:hagbard:0] mkdir test                                                 [~]
[zeus:hagbard:0] cd test                                                    [~]
[zeus:hagbard:0] ls                                                    [~/test]
[zeus:hagbard:0] ll                                                    [~/test]
total 0
[zeus:hagbard:0] touch quix.exe                                        [~/test]
[zeus:hagbard:0] touch Quix.exe                                        [~/test]
[zeus:hagbard:0] ls ./|grep -E '(Q|q)uix'                              [~/test]
quix.exe
Quix.exe
[zeus:hagbard:0]                                                       [~/test]