奇数:echo seq 1 1000|sed -n '1~2p'|tr " " "+"|sed -r "s/(.*).$/1/"|bc seq -s + 1 2 1000 | bc 偶数:echo seq 1 1000|sed -n '2~2p'|tr " " "+"|sed -r "s/(.*).$/1/"|bc seq -s + 2 2 1000 | bc
seq 1 1000|sed -n '1~2p'|tr " " "+"|sed -r "s/(.*).$/1/"
seq 1 1000|sed -n '2~2p'|tr " " "+"|sed -r "s/(.*).$/1/"