diff --git a/databases/mysql.sh b/databases/mysql.sh
index 040ffe8..075e609 100644
--- a/databases/mysql.sh
+++ b/databases/mysql.sh
@@ -7,6 +7,10 @@ mysql -u username -p database_name < file.sql                         # Import d
 
 SHOW PROCESSLIST; # Show you any queries that are currently running or in the queue to run
 
+show status where `variable_name` = 'Threads_connected'; # Show all connected threads
+show variables like 'max_connections'; # Show maximum number of allowed connections
+SET GLOBAL max_connections = 150; ## Set new value for maximum connections (no restart needed but for permanent change update my.cnf)
+
 GRANT ALL PRIVILEGES ON prospectwith.* TO 'power'@'localhost' WITH GRANT OPTION; # Grant all privileges on database
 
 CREATE USER 'newuser'@'localhost' IDENTIFIED BY 'password'; # Create user
diff --git a/languages/golang.md b/languages/golang.md
index 11e7dfd..fcb35fa 100644
--- a/languages/golang.md
+++ b/languages/golang.md
@@ -641,7 +641,7 @@ func TestSum(t *testing.T) {
     x, y := 2, 4
     expected := 2 + 4
 
-    if !reflect.DeepEqual(sum(x, y), expected) {
+    if !reflect.DeepEqual(Sum(x, y), expected) {
         t.Fatalf("Function Sum not working as expected")
     }
 }
diff --git a/tools/macos.sh b/tools/macos.sh
new file mode 100644
index 0000000..961a1db
--- /dev/null
+++ b/tools/macos.sh
@@ -0,0 +1 @@
+sudo lsof -i -P | grep LISTEN # List all processes running on a specific port
diff --git a/tools/ubuntu.sh b/tools/ubuntu.sh
index 8d3d2d4..787aae1 100644
--- a/tools/ubuntu.sh
+++ b/tools/ubuntu.sh
@@ -17,3 +17,5 @@ sudo -s # Log as root
 cat /proc/<process_id>/maps   # Show the current virtual memory usage of a Linux process
 
 ip r # Display ip of the server
+
+lsof -i :9000 # List process running on port 9000