代码: 全选
#! /bin/bash
x=0
while [ "$x" -lt 10 ]
do
y="$x"
while [ "$y" -ge 0 ]
do
printf "$y "
y=`expr $y - 1`
done
x= `expr $x + 1` #提示这行有错...我看不出来...
echo
done
0 test: line 11: 1: command not found
0 test: line 11: 1: command not found