lao shi ,zui hou de na ge "!" ,luoji fei ru he pan duan ,li jie qi zhong de yi si ,dan shi bu zhidao ge shi .
lao shi ,zui hou de na ge "!" ,luoji fei ru he pan duan ,li jie qi zhong de yi si ,dan shi bu zhidao ge shi .
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lao shi ,zui hou de na ge "!" ,luoji fei ru he pan duan ,li jie qi zhong de yi si ,dan shi bu zhidao ge shi .
2016-03-21
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2016-03-22
直接加在判斷項的前面就好吧?
if [-z $a] ?
if [！ -z $a]?
2017-07-11
這種提問，就應該把題主拉出去彈小弟弟彈到死。