これはInfocom Advent Calendar 2020 21日目の記事です。
今年からMicrosoft Azureを使い始めているが体系的な勉強はできていない
また、Azure Fundamentals (AZ-900 試験) を受験し、Microsoft Certified Azure Fundamentals 認定を受けるための準備としてもご活用いただけます。 2 日間両日を受講された方には、各認定試験機関で AZ-900 を無料で受験できる特典をご用意しております。
【2021/01/09追記】
root@obsiot:~# apt-get install openjdk-8-jdk Reading package lists... 0%Reading package lists... 100%Reading package lists... Done Building dependency tree... 0%Building dependency tree... 0%Building dependency tree... 50%Building dependency tree... 50%Building dependency tree... 59%Building dependency tree... 90%Building dependency tree Reading state information... 0%Reading state information... 0%Reading state information... Done Package openjdk-8-jdk is not available, but is referred to by another package. This may mean that the package is missing, has been obsoleted, or is only available from another source E: Package 'openjdk-8-jdk' has no installation candidate
root@obsiot:~# apt-cache search jdk libanimal-sniffer-java - JDK/API verification tools libanimal-sniffer-java-doc - Documentation for Animal Sniffer jvm-7-avian-jre - lightweight virtual machine using the OpenJDK class library libcommons-math-java - Java lightweight mathematics and statistics components libcommons-math-java-doc - Java lightweight mathematics and statistics components - documentation libcommons-math3-java - Java lightweight mathematics and statistics components libcommons-math3-java-doc - Java lightweight mathematics and statistics components - documentation fakeroot-ng - Gives a fake root environment freemind - Java Program for creating and viewing Mindmaps gcj-4.8-jdk - GCJ and Classpath development tools for Java(TM) gcj-4.9-jdk - GCJ and Classpath development tools for Java(TM) gcj-jdk - gcj and Classpath development tools for Java(TM) libhessian-java - Java implementation of a binary protocol for web services libhessian-java-doc - Documentation for libhessian-java icedtea-7-plugin - web browser plugin based on OpenJDK and IcedTea to execute Java applets libicu4j-java - Library for Unicode support and internationalization libicu4j-4.4-java - Library for Unicode support and internationalization libicu4j-49-java - Library for Unicode support and internationalization japitools - Java API compatibility testing tools default-jdk - Standard Java or Java compatible Development Kit default-jdk-doc - Standard Java or Java compatible Development Kit (documentation) default-jre - Standard Java or Java compatible Runtime default-jre-headless - Standard Java or Java compatible Runtime (headless) gcj-native-helper - Standard helper tools for creating gcj native packages java3ds-fileloader - Java3D 3DS File Loader libjson-simple-java - Simple, lightweight and efficient JSON toolkit for Java jtreg - Regression Test Harness for the OpenJDK platform libcommons-collections3-java - Apache Commons Collections - Extended Collections API for Java libcommons-collections4-java - Apache Commons Collections - Extended Collections API for Java libcommons-collections4-java-doc - Documentation for Commons Collections 4 libcommons-lang-java - Commons Lang - an extension of the java.lang package libcommons-lang-java-doc - Documentation for Commons Lang - an extension of the java.lang package libcommons-lang3-java - Extension of the java.lang package (for Java 5+) libcommons-lang3-java-doc - Documentation for extension of the java.lang package (for Java 5+) libcommons-launcher-java - Apache Commons Launcher - Cross platform Java application launcher libhibernate-commons-annotations-java - Hibernate Commons Annotations libitext1-java - Java Library to generate PDF on the Fly libjboss-common-java - The JBoss Common Project libjboss-marshalling-java - alternative serialization API libjxp-java - Java template engine/script processor libnb-javaparser-java - Parser for the Java language which is good for use in tools libpostgresql-jdbc-java - Java database (JDBC) driver for PostgreSQL libpostgresql-jdbc-java-doc - Java database (JDBC) driver for PostgreSQL (documentation) libreoffice - office productivity suite (metapackage) libslf4j-java - Simple Logging Facade for Java mauve - free test suite for the Java Class libraries libmaven-enforcer-plugin-java - Maven build rule execution framework mmake - Makefile generator for Java programs icedtea-7-jre-jamvm - Alternative JVM for OpenJDK, using JamVM openjdk-7-dbg - Java runtime based on OpenJDK (debugging symbols) openjdk-7-demo - Java runtime based on OpenJDK (demos and examples) openjdk-7-doc - OpenJDK Development Kit (JDK) documentation openjdk-7-jdk - OpenJDK Development Kit (JDK) openjdk-7-jre - OpenJDK Java runtime, using Hotspot JIT openjdk-7-jre-headless - OpenJDK Java runtime, using Hotspot JIT (headless) openjdk-7-jre-lib - OpenJDK Java runtime (architecture independent libraries) openjdk-7-jre-zero - Alternative JVM for OpenJDK, using Zero/Shark openjdk-7-source - OpenJDK Development Kit (JDK) source files openjdk-7-jre-dcevm - Alternative VM for OpenJDK 7 with enhanced class redefinition libpracticalxml-java - practical XML handling routines substance - cross-platform look & feel for Swing applications substance-doc - cross-platform look & feel for Swing applications - documentation testng - testing framework for Java libtrove-java - high performance collections for java libtrove-java-doc - high performance collections for java libtrove3-java - high performance collections for java libtrove3-java-doc - high performance collections for java usepackage - utility to manage environment variables from within dotfiles uwsgi-app-integration-plugins - plugins for integration of uWSGI and application uwsgi-plugin-jvm-openjdk-7 - Java plugin for uWSGI (OpenJDK 7) uwsgi-plugin-jwsgi-openjdk-7 - JWSGI plugin for uWSGI (OpenJDK 7) libvisualvm-jni - All-in-One Java Troubleshooting Tool (JNI libraries) visualvm - All-in-One Java Troubleshooting Tool libwagon-java - tools to manage Maven artifacts and deployment
/etc/apt/sources.listを修正root@obsiot:~# vi /etc/apt/sources.list deb http://ftp.jp.debian.org/debian/ jessie main deb-src http://ftp.jp.debian.org/debian/ jessie main # deb http://ftp.jp.debian.org/debian/ jessie-backports main # deb-src http://ftp.jp.debian.org/debian/ jessie-backports main #deb http://ftp.jp.debian.org/debian/ jessie-updates main #コメントアウト #deb-src http://ftp.jp.debian.org/debian/ jessie-updates main #コメントアウト deb http://security.debian.org jessie/updates main deb-src http://security.debian.org jessie/updates main deb http://ftp.plathome.co.jp/pub/BX1/debian/jessie ./ deb http://archive.debian.org/debian jessie-backports main #追記
echo "Acquire::Check-Valid-Until false;" >/etc/apt/apt.conf.d/10-nocheckvalid echo 'Package: *\nPin: origin "archive.debian.org"\nPin-Priority: 500' >/etc/apt/preferences.d/10-archive-pin
apt-get update apt-get install -t jessie-backports openjdk-8-jre-headless ca-certificates-java apt-get install -t jessie-backports openjdk-8-jdk openjdk-8-jre
root@obsiot:~# /usr/sbin/update-java-alternatives -l java-1.7.0-openjdk-i386 1071 /usr/lib/jvm/java-1.7.0-openjdk-i386 java-1.8.0-openjdk-i386 1069 /usr/lib/jvm/java-1.8.0-openjdk-i386 root@obsiot:~# sudo /usr/sbin/update-java-alternatives -s java-1.8.0-openjdk-i386 update-alternatives: error: no alternatives for mozilla-javaplugin.so update-java-alternatives: plugin alternative does not exist: /usr/lib/jvm/java-8-openjdk-i386/jre/lib/i386/IcedTeaPlugin.so
root@obsiot:~# java -version openjdk version "1.8.0_171" OpenJDK Runtime Environment (build 1.8.0_171-8u171-b11-1~bpo8+1-b11) OpenJDK Server VM (build 25.171-b11, mixed mode) root@obsiot:~# javac -version javac 1.8.0_171
MMCはシステム運用に十分な信頼性を確保できない為、ファイル交換やログ保存用等にご利用ください。