linux shell 加法运算，字符串split

linux shell 加法运算，数组，diff不一样目录的名字不一样但数量对对应相同linux split以空格分割shell echo `date` for i in `ls -v 1/`; do c=`ls -v 2/$i` a=(${c// / }) b=0 for j in `ls -v 1/$i`; do #echo $b #echo ${a[$b]} diff

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