java6_64.tar配置_centos6.5_64 java 环境变量配置
jdk下載地址：
http://www.oracle.com/technetwork/java/javase/downloads/jdk8-downloads-2133151.html
解壓
1、mkdir /usr/local/java
2、cp jdk-8u181-Linux-x64.tar.gz /usr/local/java
安裝
解壓：
tar xvf jdk-8u181-Linux-x64.tar.gz
配置：
[[email?protected] jdk1.8.0_181]# vim /etc/profile
# /etc/profile
# System wide environment and startup programs, for login setup
# Functions and aliases go in /etc/bashrc
# It‘s NOT a good idea to change this file unless you know what you
# are doing. It‘s much better to create a custom.sh shell script in
# /etc/profile.d/ to make custom changes to your environment, as this
# will prevent the need for merging in future updates.
pathmunge () {
case ":${PATH}:" in
*:"$1":*)
;;
*)
if [ "$2" = "after" ] ; then
PATH=$PATH:$1
else
PATH=$1:$PATH
fi
esac
}
if [ -x /usr/bin/id ]; then
if [ -z "$EUID" ]; then
# ksh workaround
EUID=`id -u`
UID=`id -ru`
fi
USER="`id -un`"
LOGNAME=$USER
MAIL="/var/spool/mail/$USER"
fi
# Path manipulation
if [ "$EUID" = "0" ]; then
pathmunge /sbin
pathmunge /usr/sbin
pathmunge /usr/local/sbin
else
pathmunge /usr/local/sbin after
pathmunge /usr/sbin after
pathmunge /sbin after
fi
"/etc/profile" 78L, 1796C 1,1 頂端
for i in /etc/profile.d/*.sh ; do
if [ -r "$i" ]; then
if [ "${-#*i}" != "$-" ]; then
. "$i"
else
. "$i" >/dev/null 2>&1
fi
fi
done
unset i
unset -f pathmunge
export JAVA_HOME=/usr/local/java/jdk1.8.0_181
export JRE_HOME=${JAVA_HOME}/jre
export CLASSPATH=.:${JAVA_HOME}/lib:${JRE_HOME}/lib
export PATH=${JAVA_HOME}/bin:$PATH
生效：
[[email?protected] jdk1.8.0_181]# source /etc/profile
[[email?protected] jdk1.8.0_181]#
[[email?protected] jdk1.8.0_181]#
[[email?protected] jdk1.8.0_181]# java -versionjava version "1.8.0_181"Java(TM) SE Runtime Environment (build 1.8.0_181-b13)Java HotSpot(TM) 64-Bit Server VM (build 25.181-b13, mixed mode)
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