获取文件名及目录

#!/usr/bin

x='/abc/def/ghi/qq.txt'

y=`echo ${x##*/}`

echo $y

lengtha=`expr length $x`

lengthb=`expr length $y`

length=` expr $lengtha - $lengthb`

path=`expr substr "$x" 1 $length`

echo $path

 

 

 

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