在网上找了个判断 IPv4/v6 的脚本，但是改了就不好使了

[LxnChan]

如题，原脚本中判断的是传入的第一个参数$1，这里我改成了IPA，然后动态赋值，输出的 IPA 值也确实为 v6 ，但是判断为 v4 。请大家帮忙看看是哪里出错了

#!/bin/sh

IPA=`curl 'https://api64.ipify.org?format=json' | jq -r .ip`

echo $IPA

if [ "$IPA" != "${1#*:[0-9a-fA-F]}" ]; then
  echo IPv6
elif [ "$IPA" != "${1#*[0-9].[0-9]}" ]; then
  echo IPv4
else
  echo "Unrecognized IP format '$1'"
fi

执行后的输出：

root@testbench:/home/testbench/userdata# ./ipv6.sh 
  % Total    % Received % Xferd  Average Speed   Time    Time     Time  Current
                                 Dload  Upload   Total   Spent    Left  Speed
100    47  100    47    0     0     48      0 --:--:-- --:--:-- --:--:--    47
2409:8a66:b53:c761:c3be:b1b3:69d7:fb01
IPv4

[tlze]

$IPA" != "${1#*:[0-9a-fA-F]}
把 1 改

[tlze]

要把 1 都改了。$IPA" != "${IPA#*:[0-9a-fA-F]}
下面的同

[tlze]

其他也要改。
sorry, 我手机有问题。

[szdosar]

供参考
[code]
#!/bin/sh

IPA=`curl https://api64.ipify.org`

echo $IPA

if [ "$IPA" != "${IPA#*:[0-9a-fA-F]}" ]; then
echo IPv6
elif [ "$IPA" != "${IPA#*[0-9].[0-9]}" ]; then
echo IPv4
else
echo "Unrecognized IP format '$IPA'"
fi
[/code]

[exqibao]

#!/bin/bash

IPA=`curl -s 'https://api64.ipify.org/'`

echo $IPA

if [[ $IPA =~ : ]];then
# 包含:，则 IPV6
echo 'IPV6'
elif [[ $IPA =~ . ]];then
# 包含.，则 IPV4
echo 'IPV4'
else
echo "Unrecognized IP format '$IPA'"
fi

exit 0