added tools and common

.functions/common.sh

@@ -0,0 +1,16 @@
+function asktobreak(){
+    if [[ "$ANSWER_YES" == true ]];then
+        printf "\n"
+        return 1
+    fi
+    printf "Do you want to run this step (y/n)"
+    while read -r -n 1 -s answer; do
+        if [[ $answer == [YyNn] ]];then
+            [[ $answer == [Yy] ]] && return_value=1
+            [[ $answer == [Nn] ]] && return_value=0
+            printf "\n"
+            break;
+        fi
+    done
+    return $return_value
+}