shell 之while两种写法

1.while[]

#!/bin/dash 

min=1
max=100
while [ $min -le $max ]
do
    echo $min
    min=`expr $min + 1`
done  

2. while(())

#!/bin/dash 
i=1
while(($i<5));do
echo "while(()): $i"
i=`expr $i + 1`
done