I am starting Oracle WebLogic Server 12.1.3.0 where I have hosted some WEb applications, but I can not start it because I have an error
echo starting weblogic with J
Have you read the error message? Especially for this part "check your java command line for duplicate jdwp". Then you might have found that -Xrunjdwp is twice in the startup command (the line below: "Starting WLS with line").
So you need to check where the values for %JAVA_OPTIONS% and %PROXY_SETTINGS% are set in your startup configuration. I guess -Xrunjdwp is appended twice to %JAVA_OPTIONS% (except someone has misused %PROXY_SETTINGS%).