Linux/certbot_nginx.md

@@ -0,0 +1,13 @@
+# Certbot renew certificate
+
+## touch nginx config
+
+```
+sudo certbot --nginx
+```
+
+## certificate only
+
+```
+sudo certbot certonly --nginx
+```

MySQL/all_foreign_keys_to_table_or_column.md

@@ -1,5 +1,4 @@
 # Find all tables whose foreign key refers to the table/column
-[SQL File](./src/branch/master/MySQL/sql/all_foreign_keys_to_table_or_column.sql)
 
 ## By table
 

Readme.md

@@ -4,6 +4,9 @@ This is a repository with useful snippets of various kinds of code
 
 ## Structure
 
+- [Linux](./src/branch/master/Linux/)
+- - [certbot_nginx](./src/branch/master/Linux/certbot_nginx.md)
+
 - [MySQL](./src/branch/master/MySQL)
 - - [all_foreign_keys_to_table_or_column](./src/branch/master/MySQL/all_foreign_keys_to_table_or_column.md)
 - - [identify_lock](./src/branch/master/MySQL/identify_lock.md)