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Expand Up @@ -7,29 +7,29 @@
[#]: via: (https://www.2daygeek.com/check-installed-security-updates-on-redhat-rhel-and-centos-system/)
[#]: author: (Magesh Maruthamuthu https://www.2daygeek.com/author/magesh/)

Two Methods To Check Or List Installed Security Updates on Redhat (RHEL) And CentOS System
在 Redhat（RHEL） 和 CentOS 上检查或列出已安装的安全更新的两种方法
======

We had wrote two articles in the past about this topic and each articles were published for different requirements.
我们过去曾写过两篇关于这个主题的文章，每篇文章都是根据不同的要求发表的。

If you would like to check those articles before getting into this topic.
如果你想在开始之前浏览这些文章。

Navigate to the following links.
请通过以下链接：

* **[How To Check Available Security Updates On Red Hat (RHEL) And CentOS System?][1]**
* **[Four Ways To Install Security Updates On Red Hat (RHEL) And CentOS Systems?][2]**
* **[如何检查 Red Hat（RHEL）和 CentOS 上的可用安全更新？] [1] **
  * **[在 Red Hat（RHEL）和 CentOS 上安装安全更新的四种方法？][2] **



These articles are interlinked one with others so, better to read them before digging into this.
这些文章与其他文章相互关联，因此，在深入研究之前，最好先阅读这些文章。

In this article, we will show you, how to check installed security updates.
在本文中，我们将向你展示如何检查已安装的安全更新。

I have add two methods to achieve this and you can choose which one is best and suitable for you.
我会介绍两种方法，你可以选择最适合你的。

Also, i added a small shell script, that gives you a summary about installed security packages count.
此外，我还添加了一个小的 shell 脚本，它为你提供已安装的安全包计数。

Run the following command to get a list of the installed security updates on your system.
运行以下命令获取系统上已安装的安全更新的列表。

```
# yum updateinfo list security installed
Expand All @@ -46,14 +46,14 @@ RHSA-2017:2299 Moderate/Sec. NetworkManager-adsl-1:1.8.0-9.el7.x86_64
RHSA-2015:2315 Moderate/Sec. NetworkManager-bluetooth-1:1.0.6-27.el7.x86_64
```

To count the number of installed security packages, run the following command.
要计算已安装的安全包的数量，请运行以下命令。

```
# yum updateinfo list security installed | wc -l
1046
```

To print only install packages list.
仅打印安装包列表。

```
# yum updateinfo list security all | grep -w "i"
Expand All @@ -73,16 +73,16 @@ i RHSA-2016:2581 Low/Sec. NetworkManager-config-server-1:1.4.0-12.el7.x86_
i RHSA-2017:2299 Moderate/Sec. NetworkManager-config-server-1:1.8.0-9.el7.noarch
```

To count the number of installed security packages, run the following command.
要计算已安装的安全包的数量，请运行以下命令。

```
# yum updateinfo list security all | grep -w "i" | wc -l
1043
```

Alternatively, you can check the list of vulnerabilities had fixed against the given package.
或者，你可以检查指定包修复的漏洞列表。

In this example, we are going to check the list of vulnerabilities had fixed in the “openssh” package.
在此例中，我们将检查 “openssh” 包中已修复的漏洞列表。

```
# rpm -q --changelog openssh | grep -i CVE
Expand All @@ -106,17 +106,17 @@ In this example, we are going to check the list of vulnerabilities had fixed in
- use fork+exec instead of system in scp - CVE-2006-0225 (#168167)
```

Similarly, you can check whether the given vulnerability is fixed or not in the corresponding package by running the following command.
同样，你可以通过运行以下命令来检查相应的包中是否修复了指定的漏洞。

```
# rpm -q --changelog openssh | grep -i CVE-2016-3115

- CVE-2016-3115: missing sanitisation of input for X11 forwarding (#1317819)
```

### How To Count Installed Security Packages Using Shell Script?
### 如何使用 Shell 脚本计算安装的安全包？

I have added a small shell script, which helps you to count the list of installed security packages.
我添加了一个小的 shell 脚本，它可以帮助你计算已安装的安全包列表。

```
# vi /opt/scripts/security-check.sh
Expand All @@ -133,13 +133,13 @@ done | column -t
echo "+-------------------------+"
```

Set an executable permission to `security-check.sh` file.
给 `security-check.sh` 文件执行权限。

```
$ chmod +x security-check.sh
```

Finally run the script to achieve this.
最后执行脚本统计。

```
# sh /opt/scripts/security-check.sh
Expand All @@ -159,7 +159,7 @@ via: https://www.2daygeek.com/check-installed-security-updates-on-redhat-rhel-an

作者：[Magesh Maruthamuthu][a]
选题：[lujun9972][b]
译者：[译者ID](https://github.com/译者ID)
译者：[geekpi](https://github.com/geekpi)
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
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