diff --git a/blog/2023-05-23-refactoring-bash-scripts-to-comply-with-the-google-coding-style.md b/blog/2023-05-23-refactoring-bash-scripts-to-comply-with-the-google-coding-style.md
index 4fe45599..8e8ad8b1 100644
--- a/blog/2023-05-23-refactoring-bash-scripts-to-comply-with-the-google-coding-style.md
+++ b/blog/2023-05-23-refactoring-bash-scripts-to-comply-with-the-google-coding-style.md
@@ -193,3 +193,4 @@ fi
 * [ShellCheck - A shell script static analysis tool](https://chromium.googlesource.com/chromiumos/third_party/shellcheck/+/HEAD/README.md)
 * [styleguide | Style guides for Google-originated open-source projects](https://google.github.io/styleguide/shellguide.html)* 
 * [regex101: build, test, and debug regex](https://regex101.com/)
+* [cyrilex: test and visualize regex](https://extendsclass.com/regex-tester.html)
diff --git a/i18n/en/docusaurus-plugin-content-docs/current/getting-started/_parts/_quickstart-ocboot-env.mdx b/i18n/en/docusaurus-plugin-content-docs/current/getting-started/_parts/_quickstart-ocboot-env.mdx
index 9727ceef..8674ec70 100644
--- a/i18n/en/docusaurus-plugin-content-docs/current/getting-started/_parts/_quickstart-ocboot-env.mdx
+++ b/i18n/en/docusaurus-plugin-content-docs/current/getting-started/_parts/_quickstart-ocboot-env.mdx
@@ -1,5 +1,5 @@
 - Operating System: Supported distributions vary depending on CPU architecture. The current situation of supported distributions is as follows:
-    - [CentOS 7.6~7.9 Minimal](http://isoredirect.centos.org/centos/7/isos): Supports x86_64 and arm64
+    - [CentOS 7.6~7.9 Minimal](https://centos.org/download/): Supports x86_64 and arm64
     - [Debian 10/11](https://www.debian.org/distrib/): Supports x86_64 and arm64
     - [Ubuntu 22.04](https://releases.ubuntu.com/jammy/): Supports only x86_64
     - [Kylin V10 SP2](https://www.kylinos.cn/scheme/server/1.html): Supports x86_64 and arm64