清理磁盘空间 ubuntu find largest file

参考： https://www.cyberciti.biz/faq/linux-find-largest-file-in-directory-recursively-using-find-du/

首先进行磁盘空间使用情况的查看，可以看到电脑的内存已经使用了很多了。

df -kh

Filesystem      Size Used Avail Use% Mounted on
tmpfs           1.6G 3.4M 1.6G   1% /run
/dev/nvme0n1p6 204G 181G   13G 94% /
tmpfs           7.7G   72K 7.7G   1% /dev/shm
tmpfs           5.0M 4.0K 5.0M   1% /run/lock
/dev/nvme0n1p1 256M   33M 224M 13% /boot/efi
tmpfs           1.6G 2.0M 1.6G   1% /run/user/1000

使用命令，进行查看前20个大文件，从大到小的顺序排列。

du -a /dir/ | sort -n -r | head -n 20

因为根据df -kh 查看的内容，我的大文件是放在根目录下的，/目录下，因此进行查看前1000个最大的文件，并且放入/tmp/largest文件内

sudo du -a / | sort -n -r | head -n 1000 &gt; /tmp/largest

打开另一个窗口，使用tail命令进行时时查看：

tail -f /tmp/largest

接着就可以看到最大的几个文件：

201386529&nbsp;&nbsp; &nbsp;/
77590672&nbsp;&nbsp; &nbsp;/home
77590668&nbsp;&nbsp; &nbsp;/home/linlin
62639584&nbsp;&nbsp; &nbsp;/workspace
31962700&nbsp;&nbsp; &nbsp;/home/linlin/.asdf
31940660&nbsp;&nbsp; &nbsp;/home/linlin/.asdf/installs
28715144&nbsp;&nbsp; &nbsp;/var
25442076&nbsp;&nbsp; &nbsp;/home/linlin/.asdf/installs/postgres
24853856&nbsp;&nbsp; &nbsp;/home/linlin/.asdf/installs/postgres/9.5.25
24826308&nbsp;&nbsp; &nbsp;/home/linlin/.asdf/installs/postgres/9.5.25/data
24715640&nbsp;&nbsp; &nbsp;/home/linlin/.asdf/installs/postgres/9.5.25/data/base
24244388&nbsp;&nbsp; &nbsp;/var/lib
22833744&nbsp;&nbsp; &nbsp;/home/linlin/.asdf/installs/postgres/9.5.25/data/base/314927
19349872&nbsp;&nbsp; &nbsp;/home/linlin/Documents
19013476&nbsp;&nbsp; &nbsp;/home/linlin/Documents/WeChat Files
18228600&nbsp;&nbsp; &nbsp;/home/linlin/Documents/WeChat Files/wxid_nohxnmrqnsdr22
17844668&nbsp;&nbsp; &nbsp;/home/linlin/Documents/WeChat Files/wxid_nohxnmrqnsdr22/FileStorage
17434600&nbsp;&nbsp; &nbsp;/var/lib/docker
16735904&nbsp;&nbsp; &nbsp;/home/linlin/Documents/WeChat Files/wxid_nohxnmrqnsdr22/FileStorage/MsgAttach
14615996&nbsp;&nbsp; &nbsp;/var/lib/docker/overlay2
12096712&nbsp;&nbsp; &nbsp;/usr
11234484&nbsp;&nbsp; &nbsp;/home/linlin/.cache
10745673&nbsp;&nbsp; &nbsp;/snap
6923044&nbsp;&nbsp; &nbsp;/opt
6879968&nbsp;&nbsp; &nbsp;/usr/lib
5708844&nbsp;&nbsp; &nbsp;/var/lib/snapd
5492420&nbsp;&nbsp; &nbsp;/workspace/coding_tools
5302068&nbsp;&nbsp; &nbsp;/home/linlin/.asdf/installs/ruby
4958544&nbsp;&nbsp; &nbsp;/workspace/devise_rails
4272836&nbsp;&nbsp; &nbsp;/home/linlin/Documents/WeChat Files/wxid_nohxnmrqnsdr22/FileStorage/MsgAttach/83337d654db3823e39ac70116817c15c
4235612&nbsp;&nbsp; &nbsp;/var/log
4235152&nbsp;&nbsp; &nbsp;/home/linlin/Documents/WeChat Files/wxid_nohxnmrqnsdr22/FileStorage/MsgAttach/83337d654db3823e39ac70116817c15c/Image
4235148&nbsp;&nbsp; &nbsp;/home/linlin/Documents/WeChat Files/wxid_nohxnmrqnsdr22/FileStorage/MsgAttach/83337d654db3823e39ac70116817c15c/Image/2023-01
4161976&nbsp;&nbsp; &nbsp;/var/log/journal
4161972&nbsp;&nbsp; &nbsp;/var/log/journal/0fa067e1a5ae40eca3ba92afd6ec6a2e
4054332&nbsp;&nbsp; &nbsp;/var/lib/snapd/snaps
3626024&nbsp;&nbsp; &nbsp;/workspace/devise_rails/image
3553308&nbsp;&nbsp; &nbsp;/home/linlin/.wine
3550480&nbsp;&nbsp; &nbsp;/home/linlin/.wine/drive_c
3140592&nbsp;&nbsp; &nbsp;/home/linlin/.cache/yarn
3140588&nbsp;&nbsp; &nbsp;/home/linlin/.cache/yarn/v6
2945972&nbsp;&nbsp; &nbsp;/workspace/coding_tools/android_studio
2933440&nbsp;&nbsp; &nbsp;/home/linlin/Downloads

可以看出，微信以及workspace文件夹的devise文件夹，/var/log文件夹占用很大的空间。可以进行查看，不重要的就可以删除了。