[LINUX]CentOS7配置jdk环境

xiaoxiao2021-03-01  23

[LINUX]CentOS7配置jdk环境

请支持原创,认准DannisTang(tangweixuan1995@foxmail.com)

如果本身linux下装有的java环境,但是没有在配置文件中指定java文件路径,那就会出现用echo找不到安装目录的情况,详情请见我的另一篇文章

使用vi命令编辑profile的文件,在最后一行中添加代码如下

[root@Redhat6 java]# vi /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 "$EUID" ]; then # ksh workaround EUID=`/usr/bin/id -u` UID=`/usr/bin/id -ru` fi USER="`/usr/bin/id -un`" LOGNAME=$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 HOSTNAME=`/bin/hostname 2>/dev/null` HISTSIZE=1000 if [ "$HISTCONTROL" = "ignorespace" ] ; then export HISTCONTROL=ignoreboth else export HISTCONTROL=ignoredups fi export PATH USER LOGNAME MAIL HOSTNAME HISTSIZE HISTCONTROL # By default, we want umask to get set. This sets it for login shell # Current threshold for system reserved uid/gids is 200 # You could check uidgid reservation validity in # /usr/share/doc/setup-*/uidgid file if [ $UID -gt 199 ] && [ "`/usr/bin/id -gn`" = "`/usr/bin/id -un`" ]; then umask 002 else umask 022 fi for i in /etc/profile.d/*.sh ; do if [ -r "$i" ]; then if [ "${-#*i}" != "$-" ]; then . "$i" else . "$i" >/dev/null 2>&1 fi fi done unset i unset -f pathmunge export MAVEN_HOME=/usr/local/apache-maven-3.5.4 export MAVEN_HOME export PATH=$PATH:$MAVEN_HOME/bin export JAVA_HOME=/usr/lib/jvm/java export PATH=$JAVA_HOME/bin:$PATH export CLASSPATH=.:$JAVA_HOME/lib/dt.jar:$JAVA_HOME/lib/tools.jar export JRE_HOME=$JAVA_HOME/jre ~ "/etc/profile" 88L, 2109C written [root@Redhat6 java]# source /etc/profile

主要是添加后面的几行

export JAVA_HOME=/usr/lib/jvm/java export PATH=$JAVA_HOME/bin:$PATH export CLASSPATH=.:$JAVA_HOME/lib/dt.jar:$JAVA_HOME/lib/tools.jar export JRE_HOME=$JAVA_HOME/jre

文件目录一定要指定正确的位置,再用source命令进行执行。这样的话,再使用which就可以进行找到了java的安装路径和echo命令就能找到正确的安装路径了

[root@Redhat6 java]# which java /usr/lib/jvm/java/bin/java [root@Redhat6 java]# echo $JAVA_HOME /usr/lib/jvm/java

请支持原创,认准DannisTang(tangweixuan1995@foxmail.com)

转载请注明原文地址: https://www.6miu.com/read-4550115.html

最新回复(0)