자바 버전 설정 alternatives

alternatives --install /usr/lib/jvm/jre-1.8.0 jre_1.8.0 /usr/lib/jvm/java-1.8.0-openjdk-1.8.0.262.b10-0.el7_8.x86_64/jre 1

 

alternatives --install <java에서 직접 사용할 링크> </etc/alternatives 에 생성 될 링크 이름> <생성될 링크가 바라볼 실제 프로그램 위치>

 

java에서 사용될 링크 는  /etc/alternatives/생성될 링크 이름

 

 

자바에서 직접 사용할 링크가 -> /etc/alternatives/생성 으로 수정

alternatives --install /usr/bin/jre jre /usr/lib/jvm/java-1.8.0-openjdk-1.8.0.412.b08-2.el8.x86_64/jre/bin/java 1

 

 

 

 

java

alternatives --install /usr/bin/java java /usr/lib/jvm/java-1.8.0-openjdk-1.8.0.262.b10-0.el7_8.x86_64/bin/java 1

alternatives --set java /usr/lib/jvm/java-1.8.0-openjdk-1.8.0.262.b10-0.el7_8.x86_64/bin/java

 

jre

alternatives --install /usr/bin/jre java /usr/lib/jvm/java-1.8.0-openjdk-1.8.0.262.b10-0.el7_8.x86_64/jre 1

alternatives --set jre /usr/lib/jvm/java-1.8.0-openjdk-1.8.0.262.b10-0.el7_8.x86_64/jre 

 

jre_1.8.0

alternatives --install /usr/lib/jre_1.8.0 jre-1.8.0 /usr/lib/jvm/java-1.8.0-openjdk-1.8.0.262.b10-0.el7_8.x86_64/jre 1

alternatives --set jre_ /usr/lib/jvm/java-1.8.0-openjdk-1.8.0.262.b10-0.el7_8.x86_64/jre 

 

jre_1.8.0_openjdk

alternatives --install /usr/lib/jvm/jre-1.8.0-openjdk jre_1.8.0_openjdk /usr/lib/jvm/java-1.8.0-openjdk-1.8.0.262.b10-0.el7_8.x86_64 1

alternatives --set jre_1.8.0_openjdk /usr/lib/jvm/java-1.8.0-openjdk-1.8.0.262.b10-0.el7_8.x86_64/jre 

 

 

jre_openjdk

alternatives --install /usr/lib/jvm/jre-openjdk jre_openjdk /usr/lib/jvm/java-1.8.0-openjdk-1.8.0.262.b10-0.el7_8.x86_64/jre 2

alternatives --set jre_openjdk /usr/lib/jvm/java-1.8.0-openjdk-1.8.0.262.b10-0.el7_8.x86_64/jre