How does bash restrict output to the command line interface?

Kotlin
IOS
VB.Net
SQL
Node.js
Swift
Ruby
Go
Oracle
Git
Laravel
Mongodb
Asp.Net
More...

I would like to ask you prawns, how to restrict the output of the command line?

take zookeeper as an example:

[root@zookeeper1 bin]-sharp ./zkServer.sh status
JMX enabled by default
Using config: /usr/zookeeper/bin/../conf/zoo.cfg
Mode: follower

I want to output only Mode: follower, instead of the above two lines. What should I do besides modifying the zkServer.sh file?
. / zkServer.sh status | tail-1 is incorrect.

Bash centos7 linux

Aug.10,2021

./zkServer.sh status 2>&1 | tail -1

Previous: Tinymce how to set fontsize_formats

Next: Get the data of the specified condition under the txt file

False
Django, Why does the system automatically generate an empty session? every time the request is made?
Use python to convert dict1 to dict2, in the example. I tried for a long time but couldn't find a solution.
How to self-start the php-fpm service when building a LNMP environment with docker?
Can an array in react state be bound to a dom state using an element in the array?
Wechat browser version 6.6.5 cannot prevent the springback of pull-up and drop-down to the top under ios system.
In express+hbs, how do you define the routed data as a variable on the page?
How to use symbol reference of Iconfont in dva
How to elegantly add data to JSON objects?
Using node to build video streaming server
The proportional width of the echarts graph is inconsistent.
React uses axios to call the background data. After success, how to jump to the page based on the returned value?
I don't understand what a linux command means. Please explain it.
Vue introduces multiple components in vue-router by nesting named views, and does not refresh the same reference in other pages.
Running nodejs reports fewer errors ")"

How to synchronize the structure or data of database A to database B by datagrip
Problems with vue referencing element ui components
How redux updates store twice in a row
Js closure problem
Ask for help: why did the froala rich text editor insert the image and upload it to the server twice?