bin=`dirname "
bin=`dirname "$0"`
bin=`cd "$bin"; pwd`
.
/home/d50001/ZHBR/opensource/hadoop-1.0.4/hadoop-1.0.4/bin
"`
bin=`cd "$bin"; pwd`
.
/home/d50001/ZHBR/opensource/hadoop-1.0.4/hadoop-1.0.4/bin
阅读背景：
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"`
bin=`cd "$bin"; pwd`
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