我又来了，囧，还是脚本问题__COUNTER_VALUE_echo_counter_value_

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我又来了，囧，还是脚本问题

来源: 互联网发布时间：2016-12-13

本文导语: 初学者，诡异的问题，晕死 1 #!/bin/sh 2 #ifcounter 3 4 COUNTER=100 5 echo "Do you wish to change the counter value currently set at $COUNTER[y. 6 read ANS 7 if [ "$ANS"="y" ] || [ "$ANS"="Y" ] 8 then 9 ech...

初学者，诡异的问题，晕死

1 #!/bin/sh
  2 #ifcounter
  3
  4 COUNTER=100
  5 echo "Do you wish to change the counter value currently set at $COUNTER[y.
  6 read ANS
  7 if [ "$ANS"="y" ] || [ "$ANS"="Y" ]
  8 then
  9   echo "Enter a sensible value"
10   read VALUE
11   expr $VALUE + 10 > /dev/null 2>&1
12   STATUS=$?
13   echo "Status:$STATUS and VALUE:$VALUE"
14   if [ "$VALUE"=""  -o  "$STATUS"!="0" ]
15   then
16     echo "nothing or non-number" >&2
17     echo "Sorry now exiting..counter stays at $COUNTER" >&2
18     exit 1
19   fi
20   COUNTER=`expr $COUNTER + $VALUE`
21   echo "Counter now set to $COUNTER"
22 else
23     echo "Counter stays at $COUNTER"
24 fi

按书上来的哈，
以下是结果
Do you wish to change the counter value currently set at 100[y..n]
y
Enter a sensible value
1212
Status:0 and VALUE:1212
nothing or non-number
Sorry now exiting..counter stays at 100

应该是判断条件那出的问题，可是跟书上一样的，自己试验了好多版本都木有搞定，求教

ＰＳ：最近几天问题比较多，谢谢诸位大侠给俺的及时解答，搞定即结贴....攒的分估计这段时间全砸这个版块了

以前遇到楼主一样的困惑

结果调了半天。

犯错一次应该永远记住了。

细心加细心.

谨记!