使用until命令

#!/bin/bash

#using the until command

var1=100
until [ $var1 -eq 0 ]
do 
    echo $var1
    var1=$[ $var1-25 ]
done

var1=100
until echo $var1
    [ $var1 -eq 0 ]
do
    echo Inside the loop: $var1
    var1=$[ $var1 - 25 ]
done