Ubuntu中环境变量设置
相比于传统的~/.bashrc (System wide), 最新的方式是在~/.pam_environment(session-wide environment )中设置环境变量 (Ubuntu)。 例如：
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JAVA_HOME DEFAULT=/usr/lib/jvm/java-6-sunFEDORA_HOME DEFAULT=/opt/fedoraCATALINA_HOME DEFAULT=/var/lib/tomcat6TOMCAT_HOME DEFAULT=${CATALINA_HOME}JAVA_OPTS DEFAULT="-Dsolr.solr.home=/opt/solr-1.4 -Xms512m -Xmx1024m -XX:MaxPermSize=1024m"CLASSPATH DEFAULT=.:${CLASSPATH}PEP_NOCACHE DEFAULT=truePATH DEFAULT=${PATH}:${FEDORA_HOME}/server/bin:${FEDORA_HOME}/client/bin:${JAVA_HOME}/binGSEARCH_CONFIG DEFAULT=/opt/generic-searchSOLR_HOME DEFAULT=/opt/solr-1.4DBXML_HOME DEFAULT=/opt/dbxml-2.5.13LD_LIBRARY_PATH DEFAULT=${DBXML_HOME}/lib:${LD_LIBRARY_PATH}