脚本名：a.sh

位置：/tmp/whuang/study/java

脚本内容：

#!/bin/sh

this_dir=`pwd`

dirname $0|grep "^/" >/dev/null

if [ $? -eq 0 ];then

this_dir=`dirname $0`

else

dirname $0|grep "^." >/dev/null

retval=$?

if [ $retval -eq 0 ];then

this_dir=`dirname $0|sed "s#^.#$this_dir#"`

else

this_dir=`dirname $0|sed "s#^#$this_dir/#"`

fi

fi

echo $this_dir

----------------------------------------------

功能：获取脚本的绝对路径。

测试：

[root@ppc40 java]# pwd

/tmp/whuang/study/java

[root@ppc40 java]# sh a.sh

/tmp/whuang/study/java

[root@ppc40 java]# cd ..

[root@ppc40 study]# sh java/a.sh

/tmp/whuang/study/java

[root@ppc40 study]# sh ./java/a.sh

/tmp/whuang/study/java