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How to Delete HUGE (100-200GB) Files in Linux
============================================================
by [Aaron Kili][11] | Published: May 11, 2017 | Last Updated: May 11, 2017
 Download Your Free eBooks NOW - [10 Free Linux eBooks for Administrators][12] | [4 Free Shell Scripting eBooks][13]
Usually, to [delete/remove a file from Linux terminal][1], we use the rm command (delete files), shred command (securely delete a file), wipe command (securely erase a file) or secure-deletion toolkit (a collection of [secure file deletion tools][2]).
We can use any of the above utilities to deal with relatively small files. What if we want to delete/remove a huge file/directory say of about 100-200GB. This may not be as easy as it seems, in terms of the time taken to remove the file (I/O scheduling) as well as the amount of RAM consumed while carrying out the operation.
In this tutorial, we will explain how to efficiently and reliably delete huge files/directories in Linux.
**Suggested Read:** [5 Ways to Empty or Delete a Large File Content in Linux][3]
The main aim here is to use a technique that will not slow down the system while removing a huge file, resulting to reasonable I/O. We can achieve this using the ionice command.
### Deleting HUGE (200GB) Files in Linux Using ionice Command
ionice is a useful program which sets or gets the I/O scheduling class and priority for another program. If no arguments or just `-p` is given, ionice will query the current I/O scheduling class and priority for that process.
If we give a command name such as rm command, it will run this command with the given arguments. To specify the [process IDs of running processes][4] for which to get or set the scheduling parameters, run this:
```
# ionice -p PID
```
To specify the name or number of the scheduling class to use (0 for none, 1 for real time, 2 for best-effort, 3 for idle) the command below.
This means that rm will belong to idle I/O class and only uses I/O when any other process does not need it:
```
---- Deleting Huge Files in Linux -----
# ionice -c 3 rm /var/logs/syslog
# ionice -c 3 rm -rf /var/log/apache
```
If there won’t be much idle time on the system, then we may want to use the best-effort scheduling class and set a low priority like this:
```
# ionice -c 2 -n 6 rm /var/logs/syslog
# ionice -c 2 -n 6 rm -rf /var/log/apache
```
Note: To delete huge files using a secure method, we may use the shred, wipe and various tools in the secure-deletion toolkit mentioned earlier on, instead of rm command.
**Suggested Read:** [3 Ways to Permanently and Securely Delete Files/Directories’ in Linux][5]
For more info, look through the ionice man page:
```
# man ionice
```
That’s it for now! What other methods do you have in mind for the above purpose? Use the comment section below to share with us.
--------------------------------------------------------------------------------
作者简介：
Aaron Kili is a Linux and F.O.S.S enthusiast, an upcoming Linux SysAdmin, web developer, and currently a content creator for TecMint who loves working with computers and strongly believes in sharing knowledge.
------------------
via: https://www.tecmint.com/delete-huge-files-in-linux/
作者：[Aaron Kili ][a]
译者：[译者ID](https://github.com/译者ID)
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.tecmint.com/author/aaronkili/
[1]:https://www.tecmint.com/permanently-and-securely-delete-files-directories-linux/
[2]:https://www.tecmint.com/permanently-and-securely-delete-files-directories-linux/
[3]:https://www.tecmint.com/empty-delete-file-content-linux/
[4]:https://www.tecmint.com/find-linux-processes-memory-ram-cpu-usage/
[5]:https://www.tecmint.com/permanently-and-securely-delete-files-directories-linux/
[6]:https://www.tecmint.com/delete-huge-files-in-linux/#
[7]:https://www.tecmint.com/delete-huge-files-in-linux/#
[8]:https://www.tecmint.com/delete-huge-files-in-linux/#
[9]:https://www.tecmint.com/delete-huge-files-in-linux/#
[10]:https://www.tecmint.com/delete-huge-files-in-linux/#comments
[11]:https://www.tecmint.com/author/aaronkili/
[12]:https://www.tecmint.com/10-useful-free-linux-ebooks-for-newbies-and-administrators/
[13]:https://www.tecmint.com/free-linux-shell-scripting-books/

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如何在 Linux 中删除大（100-200GB）文件
============================================================
作者：[Aaron Kili][11] | 发布日期： May 11, 2017 | 最后更新：May 11, 2017
立即下载你的免费电子书 - [10 本为管理员的免费 Linux 电子书][12] | [4 本免费 Shell 脚本电子书][13]
通常，要[在 Linux 终端删除一个文件][1]，我们使用 rm 命令(删除文件)、shred 命令（安全删除文件）、wipe 命令(安全擦除文件)或者 secure-deletion 工具包（一个[安全文件删除工具][2]集合）。
我们可以使用下面任意的工具来处理相对较小的文件。如果我们想要删除大的文件/文件夹，比如大概 100-200GB。这个方法在删除文件（I/O 调度）所花费的时间以及 RAM 占用量方面看起来可能并不容易。
在本教程中，我们会解释如何在 Linux 中有效率并可靠地删除大文件/文件夹。
**建议阅读：** [5 个在 Linux 中清空或者删除大文件的方法][3]
主要的目标是使用一种不会在删除大文件时拖慢系统的技术，并有合理的 I/O 占用。我么可以用 ionice 命令实现这个目标。
### 在 Linux 中使用 ionice 命令删除大（200GB）文件
ionice 是一个可以为另一个程序设置或获取 I/O 调度级别和优先级的有用程序。如果没有给出参数或者只有 `-p`，那么 ionice 将会查询该进程的当前的 I/O 调度级别以及优先级。
如果我们给出命令名称，如 rm 命令，它将使用给定的参数运行此命令。要指定要获取或设置调度参数的[进程的进程 ID]，运行这个：
```
# ionice -p PID
```
要指定名字或者调度的数字，使用（0 表示无、1 表示实时、2 表示尽力、3 表示空闲）下面的命令。
这意味这 rm 会属于空闲 I/O 级别，并且只在其他进程不使用的时候使用 I/O：
```
---- Deleting Huge Files in Linux -----
# ionice -c 3 rm /var/logs/syslog
# ionice -c 3 rm -rf /var/log/apache
```
如果系统中没有很多空闲时间，那么我们希望使用尽力调度级别，并且使用低优先级：
```
# ionice -c 2 -n 6 rm /var/logs/syslog
# ionice -c 2 -n 6 rm -rf /var/log/apache
```
注意：要使用安全的方法删除大文件，我们可以使用先前提到的 shred、wipe 以及 secure-deletion 工具包中的不同工具，而不是 rm 命令。
**建议阅读：**[3 个在 Linux 中永久/安全删除文件/文件夹的方法][5]
要获取更多信息，查阅 ionice 的手册页：
```
# man ionice
```
就是这样了！你脑海里还有其他的方法么？在评论栏中与我们分享。
--------------------------------------------------------------------------------
作者简介：
Aaron Kili 是 Linux 和 F.O.S.S 爱好者，将来的 Linux 系统管理员和网络开发人员，目前是 TecMint 的内容创作者，他喜欢用电脑工作，并坚信分享知识。
------------------
via: https://www.tecmint.com/delete-huge-files-in-linux/
作者：[Aaron Kili ][a]
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
[a]:https://www.tecmint.com/author/aaronkili/
[1]:https://www.tecmint.com/permanently-and-securely-delete-files-directories-linux/
[2]:https://www.tecmint.com/permanently-and-securely-delete-files-directories-linux/
[3]:https://www.tecmint.com/empty-delete-file-content-linux/
[4]:https://www.tecmint.com/find-linux-processes-memory-ram-cpu-usage/
[5]:https://www.tecmint.com/permanently-and-securely-delete-files-directories-linux/
[6]:https://www.tecmint.com/delete-huge-files-in-linux/#
[7]:https://www.tecmint.com/delete-huge-files-in-linux/#
[8]:https://www.tecmint.com/delete-huge-files-in-linux/#
[9]:https://www.tecmint.com/delete-huge-files-in-linux/#
[10]:https://www.tecmint.com/delete-huge-files-in-linux/#comments
[11]:https://www.tecmint.com/author/aaronkili/
[12]:https://www.tecmint.com/10-useful-free-linux-ebooks-for-newbies-and-administrators/
[13]:https://www.tecmint.com/free-linux-shell-scripting-books/