Open a new tab, and then in the terminal of `Tab 2`{{}} , download `arthas-boot.jar`{{}} and start with the `java -jar`{{}} command:

`wget https://arthas.aliyun.com/arthas-boot.jar; java -jar arthas-boot.jar`{{execute T2}}

`arthas-boot`{{}} is the launcher for `Arthas`{{}} . It lists all the Java processes, and the user can select the target process to be diagnosed.

Select the first process, type `1`{{execute T2}} ，then type `Enter`{{}} ：

After the Attach is successful, Arthas LOGO is printed. Enter `help`{{execute T2}} for more help.

![Arthas Boot](../../assets/arthas-boot.png)