Question

linux中设置环境变量问题

root@xiongheran-Inspiron-7520:/opt/csvn# export JAVA_HOME=/opt/java/jdk1.7.0_25root@xiongheran-Inspiron-7520:/opt/csvn# JAVA_HOME/bin/java -versionbash: JAVA_HOME/bin/java: 没有那个文件或目录但是root@xiongheran-Inspiron-7520:/opt/csvn# /opt/java/jdk1.7.0_25/bin/java -versionjava version "1.7.0_25"Java(TM) SE Runtime Environment (build 1.7.0_25-b15)Java HotSpot(TM) 64-Bit Server VM (build 23.25-b01, mixed mode)请问这是为什么

Answer 1

JAVA_HOME/bin/java -version
当然识别不出了，${JAVA_HOME}/bin/java -version

Answer 2

要么JAVA_HOME/bin/java改成$JAVA_HOME/bin/java;
要么别用export环境变量，用alias命令

Answer 3

用set命令看看你有这个环境变量么