我不明白这种逃避。有可用的发电机吗？
我需要用变量 $NEW_DNS 替换普通文本 (185...)
sed -i "185.228.168.168,185.228.169.168|$NEW_DNS /etc/wireguard/wg0.conf
输出
sed: -e expression #1, char 4: unknown command: `.'
更新：我希望您可以看到答案及其工作，只是 /etc/wireguard/wg0.conf 没有用新数据重写（但输出是正确的。
# client start menu
echo "What can i do for you today? "
options=("Show Clients" "Show your DNS Server" "Change your DNS Server" "Install/add new Client" "Quit")
select opt in "${options[@]}"
do
case $opt in
"Show Clients")
ls *.conf
;;
"Show your DNS Server")
if [ $( head -n1 $CONF | awk '{print $5}') == "1.1.1.1,1.0.0.1" ]; then
echo "Your Public DNS Server is Cloudflare (1.1.1.1,1.0.0.1), great unfiltered choice for best speed worldwide! "
fi
if [ $( head -n1 $CONF | awk '{print $5}') == "176.103.130.130,176.103.130.131" ]; then
echo "Your Public DNS Server is Adguard (176.103.130.130,176.103.130.131), Advertising Filter kill them all! "
fi
if [ $( head -n1 $CONF | awk '{print $5}') == "84.200.69.80,84.200.70.40" ]; then
echo "Your Public DNS Server is WATCH.DNS (84.200.69.80,84.200.70.40), great unfiltered choice for German Clients! "
fi
if [ $( head -n1 $CONF | awk '{print $5}') == "9.9.9.9, 149.112.112.112" ]; then
echo "Your Public DNS Server is QUAD9 (9.9.9.9, 149.112.112.112), great TLS encrypted unfiltered choice! "
fi
if [ $( head -n1 $CONF | awk '{print $5}') == "77.88.8.7,77.88.8.3" ]; then
echo "Your Public DNS Server is Yandex (77.88.8.7,77.88.8.3), safe choice with Family Filter! "
fi
if [ $( head -n1 $CONF | awk '{print $5}') == "185.228.168.168,185.228.169.168" ]; then
echo "Your Public DNS Server is Clean Browsing (185.228.168.168,185.228.169.168), Uuh TLS encrypted safe choice with Family Filter and Youtube-Safe Option! "
fi
if [ $( head -n1 $CONF | awk '{print $5}') == "10.8.0.1" ]; then
echo "Nothing else then own encrypted and logless dedicated DNS Server! "
fi
;;
"Change your DNS Server")
if [ $( head -n1 $CONF | awk '{print $5}') == "1.1.1.1,1.0.0.1" ]; then
echo "Your Public DNS Server is Cloudflare (1.1.1.1,1.0.0.1), great unfiltered choice for best speed worldwide! "
fi
if [ $( head -n1 $CONF | awk '{print $5}') == "176.103.130.130,176.103.130.131" ]; then
echo "Your Public DNS Server is Adguard (176.103.130.130,176.103.130.131), Advertising Filter kill them all! "
fi
if [ $( head -n1 $CONF | awk '{print $5}') == "84.200.69.80,84.200.70.40" ]; then
echo "Your Public DNS Server is WATCH.DNS (84.200.69.80,84.200.70.40), great unfiltered choice for German Clients! "
fi
if [ $( head -n1 $CONF | awk '{print $5}') == "9.9.9.9, 149.112.112.112" ]; then
echo "Your Public DNS Server is QUAD9 (9.9.9.9, 149.112.112.112), great TLS encrypted unfiltered choice! "
fi
if [ $( head -n1 $CONF | awk '{print $5}') == "77.88.8.7,77.88.8.3" ]; then
echo "Your Public DNS Server is Yandex (77.88.8.7,77.88.8.3), safe choice with Family Filter! "
fi
if [ $( head -n1 $CONF | awk '{print $5}') == "185.228.168.168,185.228.169.168" ]; then
echo "Your want leave your Clean Browsing server and use another one?. You need generate new configs later, if you want to use new Server (Start Menu choice: 3 ) "
# client choice NEW DNS
read -rp "Do you really want to change your DNS Server? (y/n) " -e -i y NEW_DNS
if [ "$NEW_DNS" == "y" ]; then
echo "Which DNS do you want to use with the VPN?"
echo "You recognise encrypted DNS with "TLS" (Port 853 can be potentially blocked through Government etc.) Some Servers use logs, but no one of them log aWireguard IP. "
echo " 1) Cloudflare: log: yes 24h, Filter: no, + best speed worldwide"
echo " 2) AdGuard: Log: yes, Filter: advertising"
echo " 3) DNS.WATCH: Log: no, Filter: no, + great speed for Germany"
echo " 4) Quad9: TLS: yes, Log: yes, Filter: no"
echo " 5) Yandex Family: TLS:no, Log: yes, Filter: adult"
echo " 6) Clean Browsing Family: TLS: yes, Log: yes, Filter: adult and explicit sites, Youtube- safe mode"
read -p "DNS [1-6]: " -e -i 1 NEW_DNS
case $NEW_DNS in
1)
NEW_DNS="1.1.1.1,1.0.0.1"
;;
2)
NEW_DNS="176.103.130.130,176.103.130.131"
;;
3)
NEW_DNS="84.200.69.80,84.200.70.40"
;;
4)
NEW_DNS="9.9.9.9, 149.112.112.112"
;;
5)
NEW_DNS="77.88.8.7,77.88.8.3"
;;
6)
NEW_DNS="185.228.168.168,185.228.169.168"
;;
esac
fi
# EOF client choices DNS
fi
sed "s/185\.228\.168\.168,185\.228\.169\.168/$NEW_DNS/" /etc/wireguard/wg0.conf
if [ $( head -n1 $CONF | awk '{print $5}') == "10.8.0.1" ]; then
echo "Nothing else then own encrypted and logless dedicated DNS Server! "
fi
;;
"Install/add new Client")
break
;;
"Quit")
exit
;;
esac
done
答案1
如果您想用变量中的内容替换该字符串本身：
sed "s|185\.228\.168\.168,185\.228\.169\.168|$NEW_DNS|" /etc/wireguard/wg0.conf
你需要sed s|string|replacement|。您可以sed s|string|replacement|g在整个文件中使用它来替换它。您还需要使用.反斜杠进行转义，以便它不代表单个字符。我已经删除了-i开关，以便将更改写入标准输出，这样您就可以确保它是您想要的。确认无误后，您可以将其放回命令中。
如果您想编辑文件本身，请将-i开关添加到您的命令中。
sed -i "s|185\.228\.168\.168,185\.228\.169\.168|$NEW_DNS|" /etc/wireguard/wg0.conf
答案2
sin 命令用sed给定的替换文本替换与给定正则表达式匹配的任何内容。它的语法是s/expression/text/flags.
在你的情况下，你想使用表达式
185\.228\.168\.168,185\.228\.169\.168
我已经转义了这些点，因为它们在正则表达式中是“特殊的”（未转义的点与任何单个字符匹配，但您想要匹配实际的点）。
要用作替换文本的文本位于变量中。这意味着整个sed表达式必须是双引号字符串（因为 shell 会忽略单引号字符串中的变量）。
另外，您不需要s此处命令的可选标志，因此我们得到
sed "s/185\.228\.168\.168,185\.228\.169\.168/$NEW_DNS/" filename
在您亲眼看到正确的结果之前，请勿sed -i进行就地编辑。
另请注意，由于我们将变量的值注入到脚本中，因此如果包含任何字符sed，则会失败（我认为在这种特殊情况下不太可能发生）。$NEW_DNS/
如果您用逗号表示“要么这个地址，要么那个地址”，那么您将必须使用替代（带有|）：
sed -E "s/185\.228\.168\.168|185\.228\.169\.168/$NEW_DNS/" filename
我在这里使用是sed -E因为我们需要启用扩展正则表达式（这|不是默认的基本正则表达式语法的一部分）。