[問題] Unix Commandline
請問我有一個output是
1
2
3
4
-1
-2
-3
-4
4
我該如何只取出負數呢
希望不要用到有條件式的command
想了半天了 用sort cat cut都想不到好方法
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推
09/29 11:11, , 1F
09/29 11:11, 1F
推
09/29 11:21, , 2F
09/29 11:21, 2F
→
09/29 11:21, , 3F
09/29 11:21, 3F
→
09/29 11:46, , 4F
09/29 11:46, 4F
推
09/29 12:23, , 5F
09/29 12:23, 5F
推
09/29 15:19, , 6F
09/29 15:19, 6F
→
10/01 15:03, , 7F
10/01 15:03, 7F