How to remove environment variable

Question

I am use Windows 10 pro. I try to run other Tomcat instance, but I cannot control config (%CATALINA_HOME%).

This is systempropertiesadvanced (hasn't CATALINA_HOME variable):

I try to echo by cmd (Administrator role)

I try to echo by cmd: (no return result)

Because I want run Tomcat correctly (other Tomcat instance), I must remove variable CATALINA_HOME, please help me!

Solution

To clear an environment variable using Setx.exe at a command prompt:

Click Start, point to Programs, and then click Command Prompt. If you want to clear a user environment variable, type the following line

setx <variable> "" 

where is the user environment variable. If you want to clear a system environment variable, type the following line

setx <variable> "" -m 

where is the system environment variable. Close the command prompt. When you use Setx.exe to clear an environment variable value, the environment variable name is not affected.

Comments

[Mokubai]

If you've cleared to variable yourself then you might want to try rebooting (not shutdown) your computer and see if it gets cleared then.

[Dao Minh Thu]

Thank you, yesterday, I did the same your advice, It works. But today, nothing change.

[DavidPostill]

Tomcat may be running as a service (on startup), using a batch file which sets %CATALINA_HOME%

[Dao Minh Thu]

Thank you. inside file \bin\startup.bat, I add this line: set "CATALINA_HOME=C:\data\dcv\liferay\for deploy\liferay-portal-6.2-ce-ga6\tomcat-7.0.62", it works.

[DavidPostill]

@dovy Please read Can I answer my own question?. You might want to convert your comment into an answer ;)

[Dao Minh Thu]

This is merely a trick, It doesn't resolve the above question.