doc: update docker.md & linux-command.md & nginx.md (#838)

* doc: update linux-command.md

* 增加代理构建

* 删除上次提交多余

docs/docker.md

@@ -163,6 +163,7 @@ $ docker build - < Dockerfile
 $ docker build - < context.tar.gz
 $ docker build -t eon/nginx-server .
 $ docker build -f myOtherDockerfile .
+$ docker build --build-arg https_proxy=127.0.0.1:8088 # 使用http代理构建
 $ curl example.com/remote/Dockerfile | docker build -f - .
 $ docker save -o <保存路径>/myimage.tar myimage:latest # 导出
 $ docker load -i <路径>/myimage.tar # 导入

docs/linux-command.md

@@ -24,6 +24,7 @@ Linux 命令速查表
 **`w`** | 显示系统中当前登录的用户
 **`whoami`** | 显示您的登录身份
 **`finger username`** | 显示有关用户的信息
+**`sed -ri 's/.*swap.*/#&/' /etc/fstab && swapoff -a`** | 关闭swap
 <!--rehype:className=style-list-->
 
 ### 硬件
@@ -332,6 +333,23 @@ Linux 命令速查表
 `Ctrl`+`N` (Down) | 下一条命令
 <!--rehype:className=left-align shortcuts-->
 
+技巧
+---
+
+### linux技巧
+<!--rehype:wrap-class=row-span-2 col-span-2-->
+
+ :---                                          | :---
+:----------------------------------------------| :---
+ **`du -h / \| sort -rh \| head -20`**         | 最大20个文件
+ **`grep -Ev '^\s*($\|#\|;)' example.conf`**   | 查看去掉注释和空行
+ **`echo <passwd> \| passwd root --stdin`**    | 单行改密码
+ **`find /data/app/tmp -mtime +30 -name "*.flv" -exec rm -Rf {} \;`**  | 删除30天前文件
+ **`for file in $(ls); do sed -i 's/nmg/sz/g' "$file"; done`**         | 当前目录修改字符串
+ **`ssh -NfR remote_port:localhost:local_port user@remote_server`**    | ssh代理
+ **`find . -wholename "*.sh" -exec dos2unix {} \;`**     | 修复脚本格式错误
+ <!--rehype:className=left-align shortcuts-->  
+
 另见
 ---
 

docs/nginx.md

@@ -975,44 +975,6 @@ server {
 }
 ```
 
-### 流量镜像配置
-<!--rehype:wrap-class=col-span-3-->
-
-```nginx
-server {
-    listen       80;
-    server_name 192.168.1.1;
-
-    location = /mirror1 {
-        internal;
-        #### address1 ####
-        proxy_set_header Host mirror1.com;
-        proxy_pass http://127.0.0.1:8008/api/service/list;
-    }
-
-    location = /mirror2 {
-        internal;
-        #### address2 ####
-        proxy_set_header Host mirror2.com;
-        proxy_pass http://127.0.0.1:8009/api/service/list;
-    }
-
-    # 只转发这个接口
-    location /api/service/list {
-        access_log /data/logs/nginx/json_test_to_mirror.log json;
-        mirror /mirror1;
-        mirror /mirror2;
-        proxy_pass http://127.0.0.1:8007;
-    }
-
-    location / {
-        access_log /data/logs/nginx/json_test.log json;
-        proxy_pass http://192.168.1.1:8007;
-    }
-
-}
-```
-
 另见
 ---