Question

我正在编写一个脚本，该脚本在用户的AWS访问密钥过旧时向其发送电子邮件。

现在输出看起来像这样：

Hello tdunphy, \n Your access key: AKIAICDOHVTMEAB6RM5Q was created on Wed Feb  7 22:55:51 EST 2018 and needs to be replaced. All AWS Keys need to be replaced if they are older than 90 days. \n Regards, \n Cloud Ops

我希望消息看起来像这样：

Hello tdunphy,

 Your access key: AKIAICDOHVTMEAB6RM5Q was created on Wed Feb  7 22:55:51 EST 2018 and needs to be replaced. All AWS Keys need to be replaced if they are older than 90 days.

Regards,
Cloud Ops

这是设置邮件正文的行：

 MAIL_TXT1="Hello $user_name, \\n Your access key: $user_access_key1 was created on $date1 and needs to be replaced. All AWS Keys need to be replaced if they are older than 90 days. \\n Regards, \\n Cloud Ops"

在此示例中，为什么换行符不起作用？我该如何使用它？

Answer 1

您可以使用：

template=$'Hello tdunphy, \n Your access key: AKIAICDOHVTMEAB6RM5Q was created on Wed Feb  7 22:55:51 EST 2018 and needs to be replaced. All AWS Keys need to be replaced if they are older than 90 days. \n Regards, \n Cloud Ops'

然后echo起作用：

$ echo "$template"
Hello tdunphy, 
 Your access key: AKIAICDOHVTMEAB6RM5Q was created on Wed Feb  7 22:55:51 EST 2018 and needs to be replaced. All AWS Keys need to be replaced if they are older than 90 days. 
 Regards, 
 Cloud Ops

或printf：

$ printf "%s" "$template"
 Your access key: AKIAICDOHVTMEAB6RM5Q was created on Wed Feb  7 22:55:51 EST 2018 and needs to be replaced. All AWS Keys need to be replaced if they are older than 90 days. 
 Regards, 
 Cloud Ops

借助printf，您还可以更轻松地组装模板字段：

$ t2=$'Fields:\n\tf1=%s\n\tf2=%s'
$ printf "$t2" 101 102
Fields:
    f1=101
    f2=102

在bash中格式化电子邮件输出

1 个答案: