可以使用
diff -ruNa s1 s2
或者使用
diff -uN c1 c2
结果如下：
sandbox$ tree . |-- dir1 | |-- a.txt | `-- b.txt `-- dir2 |-- b.txt `-- c.txt 2 directories, 4 files sandbox$ diff -ruNa dir1 dir2 diff -ruNa dir1/a.txt dir2/a.txt --- dir1/a.txt 2011-08-24 22:44:36.000000000 +0800 +++ dir2/a.txt 1970-01-01 08:00:00.000000000 +0800 @@ -1 +0,0 @@ -this is a.txt diff -ruNa dir1/b.txt dir2/b.txt --- dir1/b.txt 2011-08-24 22:44:45.000000000 +0800 +++ dir2/b.txt 2011-08-24 22:44:57.000000000 +0800 @@ -1 +1 @@ -this is b.txt +this is b2 txt. diff -ruNa dir1/c.txt dir2/c.txt --- dir1/c.txt 1970-01-01 08:00:00.000000000 +0800 +++ dir2/c.txt 2011-08-24 22:45:07.000000000 +0800 @@ -0,0 +1 @@ +this is c txt. sandbox$