我想把JDK的环境变量加到系统中，可是按下面的方法修改/etc/profile后，重起N次都不生效？__PATH_JAVA_HOME_export_pathmunge_usr_

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我想把JDK的环境变量加到系统中，可是按下面的方法修改/etc/profile后，重起N次都不生效？

来源: 互联网发布时间：2015-06-18

本文导语: # /etc/profile # System wide environment and startup programs, for login setup # Functions and aliases go in /etc/bashrc pathmunge () { if ! echo $PATH | /bin/egrep -q "(^|:)$1($|:)" ; then if [ "$2" = "after" ] ; then PATH=$PAT...

# /etc/profile

# System wide environment and startup programs, for login setup
# Functions and aliases go in /etc/bashrc

pathmunge () {
if ! echo $PATH | /bin/egrep -q "(^|:)$1($|:)" ; then
   if [ "$2" = "after" ] ; then
      PATH=$PATH:$1
   else
      PATH=$1:$PATH
   fi
fi
}

# Path manipulation
if [ `id -u` = 0 ]; then
pathmunge /sbin
pathmunge /usr/sbin
pathmunge /usr/local/sbin
PATH=$PATH

pathmunge /usr/X11R6/bin after

unset pathmunge

# No core files by default
ulimit -S -c 0 > /dev/null 2>&1

USER="`id -un`"
LOGNAME=$USER
MAIL="/var/spool/mail/$USER"

HOSTNAME=`/bin/hostname`
HISTSIZE=1000

if [ -z "$INPUTRC" -a ! -f "$HOME/.inputrc" ]; then
    INPUTRC=/etc/inputrc
fi

export PATH USER LOGNAME MAIL HOSTNAME HISTSIZE INPUTRC

for i in /etc/profile.d/*.sh ; do
    if [ -r "$i" ]; then
     . $i
    fi
done

unset i

export JAVA_HOME="/opt/JBuilder9/jdk1.4/"
export CLASSPATH=":$"JAVA_HOME/lib/dt.jar:$JAVA_HOME/lib/tools.jar"
export PATH="$PATH:$JAVA_HOME/bin"

重起后我在终端中还用env、export命令，显示出的变量都是默认的？
路径我肯定没输错？？？？？

给个bash_profile的例子参考：
# .bash_profile

# Get the aliases and functions
if [ -f ~/.bashrc ]; then
. ~/.bashrc
fi

# User specific environment and startup programs

QTDIR=/usr/lib/qt-2.3.0
JAVA_HOME=/usr/java/j2sdk1.4.0_01
LD_LIBRARY_PATH=/usr/lib/qt-2.3.0/lib:/usr/local/pgsql/lib:/opt/gtk/lib
PATH=$QTDIR/bin:/usr/local/gvd/bin:/usr/local/pgsql/bin:/opt/gtk/bin:$JAVA_HOME/bin:$JAVA_HOME/lib:/usr/local/sbin:/usr/sbin:/sbin:$PATH:$HOME/bin
BASH_ENV=$HOME/.bashrc
USERNAME="root"

export QTDIR JAVA_HOME LD_LIBRARY_PATH USERNAME BASH_ENV PATH

vi /etc/profile
####add####
export JAVA_HOME=/usr/java/j2sdk1.4.0_01
export PATH=$PATH :$JAVA_HOME/bin

####:wq,exit

source /etc/profile
ok

添加PATH那一行前的export去掉试试。
我组天刚做过，没有问题啊。