bash脚本 while循环语句

[root@gfs-noindex.php/tags-41973.html" class="superseo">de122 shell]# cat Daemonwhile.sh

i=5

while [ $i -gt 0 ] 

do

    echo five $i

    (( i-- ))

done

i=9

while [ $i -le 12 ]

do

    echo nine $i

    (( i++ ))

done

[root@gfs-node122 shell]# bash Daemonwhile.sh

five 5

five 4

five 3

five 2

five 1

nine 9

nine 10

nine 11

nine 12