hadoop搭建之linux配置java6的环境变量

不小心把/etc/profile文件删了，重新写一个：vi /etc/profile
最讨厌在vi上面编辑，搞了一上午，直接把下面的内容复制进去吧。注意要空两格再复制，否则会丢失字符。

/etc/profile: system-wide .profile file for the Bourne shell (sh(1))

and Bourne compatible shells (bash(1), ksh(1), ash(1), …).

export JAVA_HOME=/usr/local/jdk1.6.0_45/
export CLASSPATH=.:$JAVA_HOME/lib:$JAVA_HOME/jre/lib:$CLASSPATH export PATH=$JAVA_HOME/bin:$JAVA_HOME/jre/bin:$PATH

if [ “$PS1" ]; then if [ "$BASH” ] && [ “$BASH” != “/bin/sh” ]; then
# The file bash.bashrc already sets the default PS1.
# PS1=’\h:\w$ ’
if [ -f /etc/bash.bashrc ]; then
. /etc/bash.bashrc
fi
else
if [ “id -u” -eq 0 ]; then
PS1=’# ’
else
PS1=’$ ’
fi
fi
fi

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