在我的問題中,看起來像j
value 和i
valuereach 6
;哪裡i
應該只跑到5
.有人可以解釋一下嗎?
i=0;
j=0;
echo "values of $i and $j" > debug.txt;
while [ $j -le 5 ]
do
j=expr $j + 1
i=expr $i + 1
echo "values of $i and $j" >> debug.txt
done;
cat debug.txt;
輸出 :
value of i is 0 and j is 0
value of i is 1 and j is 1
value of i is 2 and j is 2
value of i is 3 and j is 3
value of i is 4 and j is 4
value of i is 5 and j is 5
value of i is 6 and j is 6
答案1
您的腳本不起作用的原因是您正在使用-le
.這-le
會導致您的腳本認為當它達到 5 時,它仍然會執行,因為它等於 5 -lt
。