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sources/tech/20191016 Linux sudo flaw can lead to unauthorized privileges.md
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[#]: collector: (lujun9972)
[#]: translator: ( )
[#]: translator: (geekpi)
[#]: reviewer: ( )
[#]: publisher: ( )
[#]: url: ( )

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sources/tech/20191015 Bash Script to Delete Files-Folders Older Than -X- Days in Linux.md → translated/tech/20191015 Bash Script to Delete Files-Folders Older Than -X- Days in Linux.md
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[#]: via: (https://www.2daygeek.com/bash-script-to-delete-files-folders-older-than-x-days-in-linux/)
[#]: author: (Magesh Maruthamuthu https://www.2daygeek.com/author/magesh/)
Bash Script to Delete Files/Folders Older Than “X” Days in Linux
在 Linux 中使用 Bash 脚本删除早于 “X” 天的文件/文件夹
======
**[Disk Usage][1]** Monitoring tools are capable of alerting us when a given threshold is reached.
**[磁盘使用率][1]**监控工具能够在达到给定阈值时提醒我们。
But they don’t have the ingenuity to fix the **[disk usage][2]** problem on their own.
但它们无法自行解决**[磁盘使用率][2]**问题。
Manual intervention is needed to solve the problem.
需要手动干预才能解决该问题。
But if you want to fully automate this kind of activity, what you will do.
如果你想完全自动化此类操作，你会做什么。
Yes, it can be done using the bash script.
是的，可以使用 bash 脚本来完成。
This script prevents alerts from **[monitoring tool][3]** because we delete old log files before filling the disk space.
该脚本可防止来自**[监控工具][3]**的警报，因为我们会在填满磁盘空间之前删除旧的日志文件。
We have added many useful shell scripts in the past. If you want to check them out, go to the link below.
我们过去做了很多 shell 脚本。如果要查看，请进入下面的链接。
* **[How to automate day to day activities using shell scripts?][4]**
* **[如何使用 shell 脚本自动化日常活动？][4]**
I’ve added two bash scripts to this article, which helps clear up old logs.
我在本文中添加了两个 bash 脚本，它们有助于清除旧日志。
### 1) Bash Script to Delete a Folders Older Than “X” Days in Linux
### 1）在 Linux 中删除早于 “X” 天的文件夹的 Bash 脚本
We have a folder named **“/var/log/app/”** that contains 15 days of logs and we are going to delete 10 days old folders.
我们有一个名为 **“/var/log/app/”** 的文件夹，其中包含 15 天的日志，我们将删除早于 10 天的文件夹。
```
$ ls -lh /var/log/app/
@ -54,9 +54,9 @@ drwxrw-rw- 3 root root 24K Oct 14 23:52 app_log.14
drwxrw-rw- 3 root root 24K Oct 15 23:52 app_log.15
```
This script will delete 10 days old folders and send folder list via mail.
该脚本将删除早于 10 天的文件夹，并通过邮件发送文件夹列表。
You can change the value **“-mtime X”** depending on your requirement. Also, replace your email id instead of us.
你可以根据需要修改 **“-mtime X”** 的值。另外，请替换你的电子邮箱，而不是用我们的。
```
# /opt/script/delete-old-folders.sh
@ -81,13 +81,13 @@ rm $MESSAGE /tmp/folder.out
fi
```
Set an executable permission to **“delete-old-folders.sh”** file.
给 **“delete-old-folders.sh”** 设置可执行权限。
```
# chmod +x /opt/script/delete-old-folders.sh
```
Finally add a **[cronjob][5]** to automate this. It runs daily at 7AM.
最后添加一个 [cronjob][5] 自动化此任务。它于每天早上 7 点运行。
```
# crontab -e
@ -95,7 +95,7 @@ Finally add a **[cronjob][5]** to automate this. It runs daily at 7AM.
0 7 * * * /bin/bash /opt/script/delete-old-folders.sh
```
You will get an output like the one below.
你将看到类似下面的输出。
```
Application log folders are deleted older than 20 days
@ -107,15 +107,15 @@ Oct 14 /var/log/app/app_log.14
Oct 15 /var/log/app/app_log.15
```
### 2) Bash Script to Delete a Files Older Than “X” Days in Linux
### 2）在 Linux 中删除早于 “X” 天的文件的 Bash 脚本
We have a folder named **“/var/log/apache/”** that contains 15 days of logs and we are going to delete 10 days old files.
我们有一个名为 **“/var/log/apache/”** 的文件夹，其中包含15天的日志，我们将删除 10 天前的文件。
The articles below are related to this topic, so you may be interested to read.
以下文章与该主题相关，因此你可能有兴趣阅读。
* **[How To Find And Delete Files Older Than “X” Days And “X” Hours In Linux?][6]**
* **[How to Find Recently Modified Files/Folders in Linux][7]**
* **[How To Automatically Delete Or Clean Up /tmp Folder Contents In Linux?][8]**
* **[如何在 Linux 中查找和删除早于 “X” 天和 “X” 小时的文件？][6]**
* **[如何在 Linux 中查找最近修改的文件/文件夹][7]**
* **[如何在 Linux 中自动删除或清理 /tmp 文件夹内容？][8]**
@ -139,9 +139,9 @@ The articles below are related to this topic, so you may be interested to read.
-rw-rw-rw- 3 root root 24K Oct 15 23:52 2daygeek_access.15
```
This script will delete 10 days old files and send folder list via mail.
该脚本将删除 10 天前的文件并通过邮件发送文件夹列表。
You can change the value **“-mtime X”** depending on your requirement. Also, replace your email id instead of us.
你可以根据需要修改 **“-mtime X”** 的值。另外，请替换你的电子邮箱，而不是用我们的。
```
# /opt/script/delete-old-files.sh
@ -166,13 +166,13 @@ rm $MESSAGE /tmp/file.out
fi
```
Set an executable permission to **“delete-old-files.sh”** file.
给 **“delete-old-files.sh”** 设置可执行权限。
```
# chmod +x /opt/script/delete-old-files.sh
```
Finally add a **[cronjob][5]** to automate this. It runs daily at 7AM.
最后添加一个 [cronjob][5] 自动化此任务。它于每天早上 7 点运行。
```
# crontab -e
@ -180,7 +180,7 @@ Finally add a **[cronjob][5]** to automate this. It runs daily at 7AM.
0 7 * * * /bin/bash /opt/script/delete-old-folders.sh
```
You will get an output like the one below.
你将看到类似下面的输出。
```
Apache Access log files are deleted older than 20 days
@ -198,7 +198,7 @@ via: https://www.2daygeek.com/bash-script-to-delete-files-folders-older-than-x-d
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)
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