Add 'go-update'

go-update

@@ -0,0 +1,57 @@
+#!/bin/sh -e
+
+CURRENT_GO_PATH=$(which go)
+
+if [ -z "$CURRENT_GO_PATH" ]; then
+    echo "Go is not installed!"
+    CURRENT_GO_PATH="/usr/local/go"
+    echo "Installing Go in $CURRENT_GO_PATH"
+else
+    echo "Found Go in $CURRENT_GO_PATH"
+    echo "Updating Go in $CURRENT_GO_PATH"
+fi
+
+BASE_GO_PATH=$(echo $CURRENT_GO_PATH | sed 's/\/bin\/go//g')
+ROOT_GO_PATH=$(echo $BASE_GO_PATH | sed 's/\/go//g')
+# echo "Current Go path: $CURRENT_GO_PATH | Base Go path: $BASE_GO_PATH | Root Go path: $ROOT_GO_PATH"
+
+UPDATE_GO_VERSION=${1:-}
+
+if [ -z "$UPDATE_GO_VERSION" ]; then
+    echo "Usage: $0 <go-version> | Example: $0 1.19.5"
+    exit 1
+fi
+
+CURRENT_GO_VERSION=$(go version | awk '{print $3}')
+echo "Checking version $UPDATE_GO_VERSION in local..."
+
+if [ "go$UPDATE_GO_VERSION" = "$CURRENT_GO_VERSION" ]; then
+    echo "Version $UPDATE_GO_VERSION is already installed!"
+    exit 0
+else
+    echo "New version $UPDATE_GO_VERSION is available!"
+fi
+
+GO_FILE="go${UPDATE_GO_VERSION}.linux-amd64.tar.gz"
+GO_DL_URL=https://go.dev/dl/$GO_FILE
+
+echo "Downloading last version from $GO_DL_URL"
+sudo wget $GO_DL_URL -O /tmp/$GO_FILE
+
+echo "Remove old version: $CURRENT_GO_VERSION from $BASE_GO_PATH"
+sudo rm -rf $BASE_GO_PATH
+
+echo "Extracting new version: $UPDATE_GO_VERSION"
+sudo tar -C $ROOT_GO_PATH -xzf /tmp/$GO_FILE
+
+echo "Removing downloaded file: $GO_FILE"
+sudo rm -rf /tmp/$GO_FILE
+
+echo "Verifying new version: $UPDATE_GO_VERSION"
+if [ "go$UPDATE_GO_VERSION" = "$(go version | awk '{print $3}')" ]; then
+    echo "New version $UPDATE_GO_VERSION is installed!"
+else
+    echo "New version $UPDATE_GO_VERSION is not installed!"
+fi
+
+echo "Thanks for using go-update!"