[[email protected] ~]$ count=1
[[email protected] ~]$ echo $count
1
[[email protected] ~]$ count=$[count + 1]
[[email protected] ~]$ echo $count
2
linux菜菜鸟的日记
[[email protected] ~]$ count=1
[[email protected] ~]$ echo $count
1
[[email protected] ~]$ count=$[count + 1]
[[email protected] ~]$ echo $count
2
