added read_secret()

lib/utils.sh

@@ -323,6 +323,19 @@ trap_debug_env(){
     trap 'result=$?; print_debug_env '"$*"'; untrap; exit $result' $TRAP_SIGNALS
 }
 
+read_secret(){
+    secret=""
+    prompt="Enter secret value: "
+    while IFS= read -p "$prompt" -r -s -n 1 char; do
+        if [[ "$char" == $'\0' ]]; then
+            break
+        fi
+        prompt='*'
+        secret="${secret}${char}"
+    done
+    echo
+}
+
 run++(){
     #if [[ "$run_count" =~ ^[[:digit:]]+$ ]]; then
         ((run_count+=1))