ubuntu 环境变量配置

1、vim /etc/environment

2、vim /etc/profile

export JAVA_HOME=/opt/jdk1.6.0_45
PATH=$JAVA_HOME/bin:/pub/tools/package/toolchain/mips-2012.07/bin:/pub/tools/package/toolchain/mips-2014.05/bin:/opt/arm-2012.09/bin:/opt/arm_eabi-2011.03/bin:/opt/r2-elf-linux-1.3.5.14/bin:$PATH
export PATH
export CLASS_PATH=.:$JAVA_HOME/lib/dt.jar:$JAVA_HOME/lib/tools.jar
export LD_LIBRARY_PATH=/pub/tools/package/toolchain/mips-2012.07/lib:/pub/tools/package/toolchain/mips-2014.05/lib:$LD_LIBRARY_PATH

当然还可以配置一些公用的 alias

alias ll='ls -alF'
alias la='ls -A'
alias l='ls -CF'

3、指定工作目录

　　sudo vim /etc/passwd