我不知道为什么下面指示的行返回1而((count))的后续执行返回0.
[me@server ~]$count=0 [me@server ~]$echo $? 0 [me@server ~]$count++ -bash: count++: command not found [me@server ~]$(count++) -bash: count++: command not found [me@server ~]$((count++)) [me@server ~]$echo $? 1 <------THIS WHY IS IT 1 AND NOT 0?? [me@server ~]$((count++)) [me@server ~]$echo $? 0 [me@server ~]$((count++)) [me@server ~]$echo $? 0 [me@server ~]$echo $count 3@H_403_3@
