23,118
社区成员
发帖
与我相关
我的任务
分享
echo -n "用户id:"
read userid
expr ${userid} + 10 1>/dev/null 2>&1
if(test "$?" -eq 0) then
echo "${userid} is a number!"
else
echo "${userid} is not a number!"
fi
#!/bin/sh
echo -n "user id:"
read userid
expr $userid + 10 1>/dev/null 2>&1
if [ $? -eq 0 ];then
echo "$userid is a number"
else
echo "$userid in not number"
fi