Install Java environment in CentOS, add soft link times: ln: failed to create symbolic link ‘/ usr/bin/Java’: file exists

[root@iZbp12f9404um3f6avsm29Z /]# ln -s /usr/local/java/jdk1.8.0_291/bin/java /usr/bin/java
ln: failed to create symbolic link ‘/usr/bin/java’: File exists

Failed to create symbolic link, file exists.

-s   The meaning of the command is to add symbolic links to play the role of a link

resolvent

[root@iZbp12f9404um3f6avsm29Z /]# ln -sf /usr/local/java/jdk1.8.0_291/bin/java /usr/bin/java
[root@iZbp12f9404um3f6avsm29Z /]# java -version
java version "1.8.0_291"
Java(TM) SE Runtime Environment (build 1.8.0_291-b10)
Java HotSpot(TM) 64-Bit Server VM (build 25.291-b10, mixed mode)

Modify the – s command to – SF command- The f command means to enforce, which means to create if it does not exist and to override if it does exist

So far, the creation of soft connection is completed