cuthead@cuthead-To-be-filled-by-O-E-M:~$ echo abc >1.txtcuthead@cuthead-To-be-filled-by-O-E-M:~$ echo bbc >2.txtcuthead@cuthead-To-be-filled-by-O-E-M:~$ diff 1.txt 2.txt1c1< abc---> bbccuthead@cuthead-To-be-filled-by-O-E-M:~$ 仅在Linux下工作，在Mac下不工作，我其实也有Mac。但我比较喜欢Linux。