Stock freeplane on Ubuntu 23.04 stopped working:
*org.knopflerfish.framework.readonly=true
*org.knopflerfish.gosg.jars=reference:file:/usr/share/freeplane/core/
*org.freeplane.user.dir=/home/john
*org.freeplane.basedirectory=/usr/share/freeplane
org.freeplane.globalresourcedir=/usr/share/freeplane/resources
*java.security.policy=/usr/share/freeplane/freeplane.policy
*org.osgi.framework.storage=/usr/share/freeplane/fwdir
Exception in thread "main" java.lang.UnsupportedOperationException: The Security Manager is deprecated and will be removed in a future release
at java.base/java.lang.System.setSecurityManager(System.java:416)
at org.freeplane.launcher.Launcher.launchWithoutUICheck(Launcher.java:279)
at org.freeplane.launcher.Launcher.main(Launcher.java:87)
Running Freeplane 1.11.4 gave a better error:
ERROR: Found /usr/bin/java in $PATH. ERROR: It has version 18.0.2-ea ERROR: Currently, freeplane requires java version 8 or from 11 to 17 ERROR: ERROR: Select a supported java version ERROR: by setting FREEPLANE_JAVA_HOME to a valid java location ERROR: OR use an unsupported java version ERROR: by setting FREEPLANE_USE_UNSUPPORTED_JAVA_VERSION to 1
Ubuntu 23.04 decided to install JDK 18, and I needed to downgrade the version of Java: sudo update-alternatives --config java and I selected Java 17.
grep -C3 myfile # matches in a binary file will not be shown grep -a -C3 myfile # will attempt to show line context in the binary file
This is useful if the artifact contains some sort of executable to run.
mvn org.apache.maven.plugins:maven-dependency-plugin:2.4:get -DartifactId=[id of artifact] -DgroupId=[group of artifact] -Dversion=[version of artifact]
Unicode emojis won't appear unless your HTML is delivered with a character encoding of UTF-8. There are two ways to do this:
Content-Type response header: Content-Type: text/html; charset=utf-8meta tag: <meta charset="utf-8" />Check your page here: https://validator.w3.org/i18n-checker/