新增适配 Gentoo 操作系统

docs/use/help.md

@@ -1,4 +1,3 @@
-
 ## 关于报错 Command not found
 
 !!! quote ""
@@ -16,13 +15,11 @@
     === "RedHat 系 / OpenCloudOS / openEuler"
 
         ``` sh
-        yum install -y curl || dnf install -y curl
+        dnf install -y curl || yum install -y curl
         ```
 
         > `Red Hat Enterprise Linux`   `CentOS`   `Rocky Linux`   `AlmaLinux`   `Fedora`   `OpenCloudOS`   `openEuler`
 
-        新装系统需要先执行一遍更新 `yum makecache`
-
     === "openSUSE"
 
         ``` sh
@@ -41,6 +38,12 @@
         apk --no-cache add -f curl bash
         ```
 
+    === "Gentoo"
+
+        ``` sh
+        emerge --ask curl
+        ```
+
 ## 关于开启 SSH 远程登录的方法
 
 !!! quote ""
@@ -70,6 +73,8 @@
         ps -ef | grep -q ssh ; [ $? -eq 0 ] && systemctl restart sshd || systemctl enable --now sshd
         ```
 
+    > 命令仅供参考，只适配了部分常见发行版
+
 ## 还原已备份的软件源
 
 !!! quote ""
@@ -77,7 +82,7 @@
     === "Debian 系"
 
         ``` sh
-        cp -rvf /etc/apt/sources.list.bak /etc/apt/sources.list
+        cp -rf /etc/apt/sources.list.bak /etc/apt/sources.list
         apt-get update
         ```
 
@@ -86,7 +91,7 @@
     === "RedHat 系 / OpenCloudOS / openEuler"
 
         ``` sh
-        cp -rvf /etc/yum.repos.d.bak /etc/yum.repos.d
+        cp -rf /etc/yum.repos.d.bak /etc/yum.repos.d
         yum makecache
         ```
 
@@ -95,24 +100,32 @@
     === "openSUSE"
 
         ``` sh
-        cp -rvf /etc/zypp/repos.d.bak /etc/zypp/repos.d
+        cp -rf /etc/zypp/repos.d.bak /etc/zypp/repos.d
         zypper ref
         ```
 
     === "Arch Linux"
 
         ``` sh
-        cp -rvf /etc/pacman.d/mirrorlist.bak /etc/pacman.d/mirrorlist
+        cp -rf /etc/pacman.d/mirrorlist.bak /etc/pacman.d/mirrorlist
         pacman -Sy
         ```
 
     === "Alpine Linux"
 
         ``` sh
-        cp -rvf /etc/apk/repositories.bak /etc/apk/repositories
+        cp -rf /etc/apk/repositories.bak /etc/apk/repositories
         apk update -f
         ```
 
+    === "Gentoo"
+
+        ``` sh
+        cp -rf /etc/portage/make.conf.bak /etc/portage/make.conf
+        [ -d /etc/portage/repos.conf ] && cp -rf /etc/portage/repos.conf/gentoo.conf.bak /etc/portage/repos.conf/gentoo.conf
+        emerge --sync --quiet
+        ```
+
 ## 其它
 
 !!! quote ""