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사전 권장사항 openssh-server 설치 후 방화벽해제 — ubuntu20.04lts / jdk 11 / gradle 7.4.2 기준 — apt-get update sudo apt-get install openjdk-11-jdk sudo nano /etc/profile.d/java.sh #/bin/bash export JAVA_HOME=/usr/lib/jvm/java-11-openjdk-amd64 — sudo mkdir /downloads/gradle -p cd /downloads/gradle sudo wget https://downloads.gradle-dn.com/distributions/gradle-7.4.2-bin.zip cd /downloads/gradle sudo unzip gradle-..