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输出双引号和变量

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输出双引号和变量

我正在编写一个脚本来自动在 PowerDNS 中加密（这是一个在 debian 上运行的简单 bash shell 脚本）

Certbot 运行并调用脚本，向其提供变量：$CERTBOT_VALIDATION

我已经读过一个主题了这里这表明需要'"content"'– 注意单引号 '和双引号 "。 （我在代码的不同迭代中尝试过这一点，但无济于事）我正在努力输出引号内的扩展变量，这是我尝试的一种方法：

pdnsutil add-record Example.com _acme-challenge txt 120 "\"%s\""  "$CERTBOT_VALIDATION"

但是，要从 bash 输出该内容，我必须\在".

我希望输出命令如下：

 pdnsutil add-record Example.com _acme-challenge txt 120 "content"

做这个的最好方式是什么？

当前输出的任何内容都出现错误：

Error: Parsing record content (try 'pdnsutil check-zone'): Data field in DNS should start with quote (") at position 0 of ''yXtgt_2vlnrF7j2V-eTJZuSjXbswsGN97TQ0Zp3IynM''

答案1

我将提供更新作为将来遇到此问题的任何人的潜在答案。

运行 certbot 命令时：

certbot certonly --manual --preferred-challenges=dns --manual-auth-hook /etc/letsencrypt/customScripts/authenticator.sh -d *.example.com --dry-run

脚本authenticator.sh现在是：

#!/bin/bash
new='"'
new2=$new$CERTBOT_VALIDATION$new
pdnsutil add-record example.com _acme-challenge txt 120 $new2
echo $new2 > output.log
# Sleep to make sure the change has time to propagate over to DNS
sleep 25

这是有效的，将变量连接为字符串以添加双引号。 output.log 显示变量是

cat output.log 
"RipQQbHO5pG95nzJjouCgTXJMrGTbLKQ5XsV5Zgn7uI"

和 certbot 报告：

certbot certonly --manual --preferred-challenges=dns --manual-auth-hook /etc/letsencrypt/customScripts/authenticator.sh -d *.example.com --dry-run
Saving debug log to /var/log/letsencrypt/letsencrypt.log
Plugins selected: Authenticator manual, Installer None
Obtaining a new certificate
Performing the following challenges:
dns-01 challenge for example.com

- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
NOTE: The IP of this machine will be publicly logged as having requested this
certificate. If you're running certbot in manual mode on a machine that is not
your server, please ensure you're okay with that.

Are you OK with your IP being logged?
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
(Y)es/(N)o: y
Output from authenticator.sh:
RipQQbHO5pG95nzJjouCgTXJMrGTbLKQ5XsV5Zgn7uI
New rrset:
_acme-challenge.example.com. IN TXT 120 "RipQQbHO5pG95nzJjouCgTXJMrGTbLKQ5XsV5Zgn7uI"

Error output from authenticator.sh:
Apr 05 10:51:41 Reading random entropy from '/dev/urandom'
Apr 05 10:51:41 gmysql Connection successful. Connected to database 'pdns' on '127.0.0.1'.
Apr 05 10:51:41 gmysql Connection successful. Connected to database 'pdns' on '127.0.0.1'.

Waiting for verification...
Cleaning up challenges

IMPORTANT NOTES:
 - The dry run was successful.

所以这似乎已经解决了。

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