Por favor, altere:
PATH="/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin:/usr/games:/usr/local/games:/$JAVA_HOME="/usr/lib/java/jdk1.8.0_131/bin/java" "
Para:
PATH="/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin:/usr/games:/usr/local/games"
JAVA_HOME="/usr/lib/java/jdk1.8.0_131"
Em seguida, source
the /etc/environment
com source /etc/enviroment
.
Agora execute echo $JAVA_PATH