linux shell程式設計之修改環境變量

啥都别說，上代碼先

#!/bin/bash

dir=${PWD}

icepath=/opt/ICE/bin

oraclehome=/opt/instantclient_11_2

icehome=/opt/ICE

pypath=/opt/IcePy-3.2.1/python

boostpath=/usr/local/boost_143

boostlib=$boostpath/lib

icelib=$icehome/lib

bfinder=`echo $PATH|grep $dir`

echo $bfinder

if [ "$bfinder" == "" ]

then

echo "export PATH=/$PATH:${dir}" >> ~/.bash_profile

export PATH=$PATH:${dir}

fi

bfinder=`echo $PATH|grep $icepath`

echo "export PATH=/$PATH:${icepath}" >> ~/.bash_profile

export PATH=$PATH:${icepath}

else

echo "ice path have been include"

bfinder=`echo $ORACLE_HOME|grep $oraclehome`

echo "export ORACLE_HOME=${oraclehome}">>~/.bash_profile

export ORACLE_HOME=${oraclehome}

bfinder=`echo $ICE_HOME|grep $icehome`

echo "export ICE_HOME=${icehome}">>~/.bash_profile

export ICE_HOME=${icehome}

bfinder=`echo $PYTHONPATH|grep $pypath`

echo "export PYTHONPATH=${pypath}">>~/.bash_profile

export PYTHONPATH=${python}

重要知識點 export隻對目前shell有效，

是以結束之後需要source ~/.bash_profile