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sources/tech/20200110 Bash Script to Send eMail With a List of User Accounts Expiring in -X- Days.md → translated/tech/20200110 Bash Script to Send eMail With a List of User Accounts Expiring in -X- Days.md
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[#]: via: (https://www.2daygeek.com/bash-script-to-check-user-account-password-expiry-linux/)
[#]: author: (Magesh Maruthamuthu https://www.2daygeek.com/author/magesh/)
Bash Script to Send eMail With a List of User Accounts Expiring in “X” Days
使用Bash 脚本发送包含 “X” 天内到期的用户账号列表的电子邮件
======
The password enforcement policy is common to all operating systems and applications.
密码强制策略对所有操作系统和应用程序都是通用的。
If you want to **[implement a password enforcement policy on Linux][1]**, go to the following article.
如果要 **[在Linux上实现密码强制策略][1]** ，请参阅以下文章。
The password enforcement policy will be enforced by most companies by default, but the time period will be different depending on the company’s requirements.
默认情况下，大多数公司都会强制执行密码强制策略，但根据公司的要求，密码的时间周期会有所不同。
Usually everyone uses a 90-days password cycle.
通常每个人都使用 90 天的密码周期。
The user will only **[change the password][2]** on some of the servers they use, and they won’t change the password on the servers they don’t use often.
用户只会在他们使用的一些服务器上 **[更改密码][2]**，而不会在他们不经常使用的服务器上更改密码。
In particular, most team forget to change the service account password, which can lead to breaking regular jobs even if they are configured to work with **[SSH key-based authentication][3]**.
特别地，大多数团队忘记更改服务帐户密码，这可能导致日常工作的中断，即使他们配置有 **[SSH基于密钥的身份验证][3]** 。
SSH key-based authentication and **[cronjobs][4]** will not work if the user account password expires.
如果用户帐户密码过期，基于SSH密钥的身份验证和 **[cronjobs][4]** 将不起作用。
To avoid this situation, we have created a **[shell script][5]** that sends you a list of user accounts that expire within 10 days.
为了避免这种情况，我们创建了一个 **[shell脚本][5]** 来向您发送 10 天内到期的用户帐户列表。
There are two **[bash scripts][6]** included in this tutorial that will help you collect information about user expiration days on your system.
本教程中包含两个 **[bash脚本][6]** 可以帮助您收集系统中用户到期日的信息。
### 1) Bash Script to Check List of User Accounts Expiring in 10 Days
### 1) 检查10天后到期的用户帐户列表
This script will help you to check the list of user accounts that expire in 10 days on your terminal.
此脚本将帮助您检查终端上 10 天内到期的用户帐户列表。
```
# vi /opt/script/user-password-expiry.sh
@ -54,13 +54,13 @@ cat /tmp/user-expiry.txt | awk '$2 <= 10' > /tmp/user-expiry-1.txt
cat /tmp/user-expiry-1.txt | column -t
```
Set an executable Linux file permission to **“user-password-expiry.sh”** file.
将文件 **“user password expiry.sh”** 设置为 Linux 可执行文件权限。
```
# chmod +x /opt/script/user-password-expiry.sh
```
You will get an output like the one below. But the username and days may be different
你将得到如下输出，但用户与天数可能不同。
```
# sh /opt/script/user-password-expiry.sh
@ -73,10 +73,9 @@ u2 9
u3 3
u4 5
```
### 2) 发送包含 10 天内到期的用户帐户列表的电子邮件
### 2) Bash Script to Send eMail With a List of User Accounts Expiring in 10 Days
This script will send a mail with a list of user accounts expiring in 10 days.
此脚本将发送一封包含 10 天内到期的用户帐户列表的邮件。
```
# vi /opt/script/user-password-expiry-mail.sh
@ -104,20 +103,20 @@ rm $MESSAGE
rm $MESSAGE1
```
Set an executable Linux file permission to **“user-password-expiry-mail.sh”** file.
将文件 **“user-password-expiry-mail.sh”** 设置为 Linux 可执行文件权限。
```
# chmod +x /opt/script/user-password-expiry-mail.sh
```
Finally add a **[cronjob][4]** to automate this. It runs once in a day at 8AM.
最后，添加一个 **[cronjob][4]** 去自动执行脚本。每天早上 8 点运行一次。
```
# crontab -e
0 8 * * * /bin/bash /opt/script/user-password-expiry-mail.sh
```
You will receive a mail similar to the first shell script output.
你将收到一封与第一个脚本输出类似的电子邮件。
--------------------------------------------------------------------------------
@ -125,13 +124,14 @@ via: https://www.2daygeek.com/bash-script-to-check-user-account-password-expiry-
作者：[Magesh Maruthamuthu][a]
选题：[lujun9972][b]
译者：[译者ID](https://github.com/译者ID)
译者：[qianmingtian][c]
校对：[校对者ID](https://github.com/校对者ID)
本文由 [LCTT](https://github.com/LCTT/TranslateProject) 原创编译，[Linux中国](https://linux.cn/) 荣誉推出
[a]: https://www.2daygeek.com/author/magesh/
[b]: https://github.com/lujun9972
[c]: https://github.com/qianmingtian
[1]: https://www.2daygeek.com/how-to-set-password-complexity-policy-on-linux/
[2]: https://www.2daygeek.com/linux-passwd-chpasswd-command-set-update-change-users-password-in-linux-using-shell-script/
[3]: https://www.2daygeek.com/configure-setup-passwordless-ssh-key-based-authentication-linux/