rh9如何改变环境变量?

fromchina626

装了一个javasdk在/usr/java
想把path设进去
就是在任何目录下都可以执行javac等命令
是不是应该改profile文件?
怎么改?
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
fi

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

huangdi

No.  You should edit ~/.bash_profile in your home directory.

Here's my sample .bash_profile

**************************************************
# .bash_profile

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

# User specific environment and startup programs

PATH=$PATH:$HOME/bin:/usr/local/j2sdk1.4.1/bin:/u1/rsi/idl/bin
PS1="[\w]"

export PATH PS1
unset USERNAME
*****************************************************

Just add /usr/java to the end of the PATH line.  ":" is the seperator.

If you want to just use it once, you can always
#export PATH=$PATH:/usr/java

fromchina626

收到

谢谢

FISHL

在PROFILE文件的末尾加入：
JAVA_HOME=/usr/java/j2sdk_1.4.2
JRE=/usr/java/j2sdk_1.4.2/jre
CLASSPATH=$JAVA_HOME/lib:$JRE/lib:.
PATH=$PATH:$JAVA_HOME/bin:$JRE/bin:.
export JAVA_HOME JRE CLASSPATH PATH

就可以了。
楼上说的的是当前用户的环境，如果新建一个用户就需要再设置一下~/.bash_profile 文件了。

huangdi

[quote:8af1c260d7="FISHL"]在PROFILE文件的末尾加入：
JAVA_HOME=/usr/java/j2sdk_1.4.2
JRE=/usr/java/j2sdk_1.4.2/jre
CLASSPATH=$JAVA_HOME/lib:$JRE/lib:.
PATH=$PATH:$JAVA_HOME/bin:$JRE/bin:.
export JAVA_HOME JRE CLASSPATH PATH

就可以了。
楼上说的的是当前用户的环境，如果新建一个用户就需要再设置一下~/.bash_profile 文件了。[/quote]

Yes, this is a better way to do it for system wide purposes.  Thanks!

fromchina626

thx