Small content update

CyC2018 · Nov 8, 2020 · 5b8e52f · 5b8e52f
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diff --git a/docs/notes/Java 基础.md b/docs/notes/Java 基础.md
@@ -1429,7 +1429,7 @@ public class Box<T> {
 }
 ```
 
-- [Java 泛型详解](http://www.importnew.com/24029.html)
+- [Java 泛型详解](https://www.cnblogs.com/Blue-Keroro/p/8875898.html)
 - [10 道 Java 泛型面试题](https://cloud.tencent.com/developer/article/1033693)
 
 # 十、注解

diff --git a/docs/notes/Java 并发.md b/docs/notes/Java 并发.md
@@ -611,6 +611,7 @@ public static void main(String[] args) {
     WaitNotifyExample example = new WaitNotifyExample();
     executorService.execute(() -> example.after());
     executorService.execute(() -> example.before());
+    executorService.shutdown();
 }
 ```
 

diff --git a/docs/notes/Linux.md b/docs/notes/Linux.md
@@ -1075,6 +1075,11 @@ dmtsai tty1 Fri May 29 11:55 - 12:11 (00:15)
 
 ```html
 $ last -n 5 | awk '{print $1 "\t" $3}'
+dmtsai   192.168.1.100
+dmtsai   192.168.1.100
+dmtsai   192.168.1.100
+dmtsai   192.168.1.100
+dmtsai   Fri
 ```
 
 可以根据字段的某些条件进行匹配，例如匹配字段小于某个值的那一行数据。