optimize grep

tasks/users.yml

@@ -1,6 +1,6 @@
 ---
 - name: list active users
-  shell: cat /etc/passwd | grep -v "nologin" | cut -f 1 -d ":"
+  shell: grep -v "nologin" /etc/passwd | cut -f 1 -d ":"
   changed_when: false
   register: active_users