好的，此远程计算机上的系统磁盘已满：
$ df -h
Filesystem Size Used Avail Use% Mounted on
udev 7,8G 0 7,8G 0% /dev
tmpfs 1,6G 3,3M 1,6G 1% /run
/dev/sdd1 117G 115G 0 100% /
但当我列出它的内容时：
du -sh ./* | sort -h
4,0K ./Documents
4,0K ./Music
4,0K ./Pictures
4,0K ./Public
4,0K ./rclone.conf
4,0K ./Templates
4,0K ./Videos
8,0K ./Desktop
12K ./examples.desktop
24K ./file.txt
1,5M ./home
5,8M ./snap
13M ./Downloads
如何查找占用了这115GB的内容？
PS：我已经做了sudo apt autoremove
备注：
sudo du -a . | sort -n -r | head -n 20
696668 .
364008 ./.cache
258880 ./.pyenv
250528 ./.pyenv/versions
250524 ./.pyenv/versions/3.8.5
246128 ./.cache/pip
239544 ./.cache/pip/http
231148 ./.pyenv/versions/3.8.5/lib
197244 ./.pyenv/versions/3.8.5/lib/python3.8
100336 ./.cache/mozilla
100332 ./.cache/mozilla/firefox
100328 ./.cache/mozilla/firefox/b38hqcj0.default
79088 ./.cache/mozilla/firefox/b38hqcj0.default/cache2
78984 ./.cache/mozilla/firefox/b38hqcj0.default/cache2/entries
65020 ./.pyenv/versions/3.8.5/lib/python3.8/test
51684 ./.cache/pip/http/5
49216 ./.cache/pip/http/5/1
48868 ./.cache/pip/http/5/1/d
48864 ./.cache/pip/http/5/1/d/8
48860 ./.cache/pip/http/5/1/d/8/2
# 编辑 Ray 的评论：
:~# du -sh * | sort -h
4,0K Documents
4,0K Music
4,0K Pictures
4,0K Public
4,0K rclone.conf
4,0K Templates
4,0K Videos
8,0K Desktop
12K examples.desktop
24K file.txt
1,5M home
5,8M snap
13M Downloads
#编辑：@sancho.s 的想法：
sudo du / -h --max-depth=1 | sort --human-numeric-sort
[sudo] password for install:
du: cannot access '/proc/30550/task/30550/fd/3': No such file or directory
du: cannot access '/proc/30550/task/30550/fdinfo/3': No such file or directory
du: cannot access '/proc/30550/fd/4': No such file or directory
du: cannot access '/proc/30550/fdinfo/4': No such file or directory
0 /dev
0 /proc
0 /sys
4,0K /cdrom
4,0K /lib64
4,0K /media
4,0K /srv
8,0K /samba
16K /lost+found
220K /tmp
3,3M /run
7,3M /root
12M /sbin
13M /bin
15M /etc
112M /boot
930M /lib
1,1G /home
1,4G /opt
3,4G /var
4,3G /usr
5,1G /snap
4,2T /
4,2T /mnt
$ uname -a
Linux PC-IT-UBUIEX 4.15.0-144-generic #148-Ubuntu SMP Sat May 8 02:33:43 UTC 2021 x86_64 x86_64 x86_64 GNU/Linux
install@PC-IT-UBUIEX:~$ ls -al /
total 2098716
drwxr-xr-x 25 root root 4096 čen 25 06:17 .
drwxr-xr-x 25 root root 4096 čen 25 06:17 ..
drwxr-xr-x 2 root root 4096 čen 18 06:47 bin
drwxr-xr-x 3 root root 4096 čen 26 06:30 boot
drwxrwxr-x 2 root root 4096 zář 5 2018 cdrom
drwxr-xr-x 20 root root 4520 čec 6 12:39 dev
-rw-r--r-- 1 root root 1479017 zář 29 2018 Documents
drwxr-xr-x 148 root root 12288 čec 2 12:20 etc
drwxr-xr-x 9 root root 4096 čec 2 17:29 home
lrwxrwxrwx 1 root root 34 čen 25 06:17 initrd.img -> boot/initrd.img-4.15.0-147-generic
lrwxrwxrwx 1 root root 34 čen 25 06:17 initrd.img.old -> boot/initrd.img-4.15.0-144-generic
drwxr-xr-x 21 root root 4096 zář 5 2018 lib
drwxr-xr-x 2 root root 4096 čec 8 2020 lib64
drwx------ 2 root root 16384 zář 5 2018 lost+found
drwxr-xr-x 2 root root 4096 čen 8 13:37 media
drwxr-xr-x 6 root root 4096 čen 18 10:45 mnt
drwxr-xr-x 5 root root 4096 bře 9 18:39 opt
dr-xr-xr-x 262 root root 0 čen 24 05:39 proc
drwx------ 7 root root 4096 čec 2 13:13 root
drwxr-xr-x 33 root root 1120 čec 10 10:09 run
drwxr-xr-x 3 root sambashare 4096 zář 24 2019 samba
drwxr-xr-x 2 root root 12288 čen 5 06:30 sbin
drwxr-xr-x 17 root root 4096 čec 2 14:15 snap
drwxr-xr-x 2 root root 4096 čec 25 2018 srv
-rw------- 1 root root 2147483648 zář 5 2018 swapfile
dr-xr-xr-x 13 root root 0 čen 24 05:39 sys
drwxrwxrwt 18 root root 4096 čec 10 10:09 tmp
drwxr-xr-x 11 root root 4096 zář 3 2019 usr
drwxr-xr-x 14 root root 4096 čec 25 2018 var
lrwxrwxrwx 1 root root 31 čen 25 06:17 vmlinuz -> boot/vmlinuz-4.15.0-147-generic
lrwxrwxrwx 1 root root 31 čen 25 06:17 vmlinuz.old -> boot/vmlinuz-4.15.0-144-generic
/mnt/ 是挂载的磁盘，不是系统磁盘（对吗？）。所以除了那个之外，我没有看到任何总计为 115G 的东西……
~# du /mnt -h --max-depth=1 | sort --human-numeric-sort
306G /mnt/sdb
467G /mnt/sda
1,7T /mnt/sdc
1,7T /mnt/sdd
4,2T /mnt
# ls -al /mnt
total 20
drwxr-xr-x 6 root root 4096 čen 18 10:45 .
drwxr-xr-x 25 root root 4096 čen 25 06:17 ..
drwxrwxrwx 5 6687 6687 4096 čen 16 23:44 sda
drwxr-xr-x 3 root root 4096 čen 19 17:50 sdb
drwxrwxrwx 16 root root 4096 čec 9 14:43 sdc
drwxr-xr-x 2 root root 0 čen 22 08:50 sdd
:/usr/local/bin$ lsblk
NAME MAJ:MIN RM SIZE RO TYPE MOUNTPOINT
loop0 7:0 0 548K 1 loop /snap/gnome-logs/106
loop1 7:1 0 99,4M 1 loop /snap/core/11187
loop2 7:2 0 55,4M 1 loop /snap/core18/2066
loop5 7:5 0 219M 1 loop /snap/gnome-3-34-1804/72
loop7 7:7 0 704K 1 loop /snap/gnome-characters/726
loop8 7:8 0 136,2M 1 loop /snap/b2/25
loop9 7:9 0 6,3M 1 loop /snap/rclone/466
loop10 7:10 0 61,7M 1 loop /snap/core20/1026
loop12 7:12 0 65,1M 1 loop /snap/gtk-common-themes/1515
loop14 7:14 0 2,5M 1 loop /snap/gnome-calculator/884
loop15 7:15 0 164,8M 1 loop /snap/gnome-3-28-1804/161
loop20 7:20 0 140,7M 1 loop /snap/gnome-3-26-1604/104
loop22 7:22 0 55,5M 1 loop /snap/core18/2074
loop23 7:23 0 99,4M 1 loop /snap/core/11316
loop25 7:25 0 243,9M 1 loop /snap/gnome-3-38-2004/39
loop26 7:26 0 2,5M 1 loop /snap/gnome-system-monitor/163
sda 8:0 0 931,5G 0 disk
└─sda1 8:1 0 931,5G 0 part /mnt/sda
sdb 8:16 0 931,5G 0 disk
└─sdb1 8:17 0 931,5G 0 part /mnt/sdb
sdc 8:32 0 1,8T 0 disk /mnt/sdc
sdd 8:48 0 119,2G 0 disk
└─sdd1 8:49 0 119,2G 0 part /
df -h
Filesystem Size Used Avail Use% Mounted on
udev 7,8G 0 7,8G 0% /dev
tmpfs 1,6G 3,3M 1,6G 1% /run
/dev/sdd1 117G 115G 0 100% /
tmpfs 7,8G 0 7,8G 0% /dev/shm
tmpfs 5,0M 4,0K 5,0M 1% /run/lock
tmpfs 7,8G 0 7,8G 0% /sys/fs/cgroup
/dev/loop2 56M 56M 0 100% /snap/core18/2066
/dev/loop1 100M 100M 0 100% /snap/core/11187
/dev/loop5 219M 219M 0 100% /snap/gnome-3-34-1804/72
/dev/loop8 137M 137M 0 100% /snap/b2/25
/dev/loop9 6,4M 6,4M 0 100% /snap/rclone/466
/dev/loop12 66M 66M 0 100% /snap/gtk-common-themes/1515
/dev/loop14 2,5M 2,5M 0 100% /snap/gnome-calculator/884
/dev/loop22 56M 56M 0 100% /snap/core18/2074
/dev/sda1 917G 467G 404G 54% /mnt/sda
/dev/sdb1 916G 307G 564G 36% /mnt/sdb
/dev/sdc 1,8T 1,7T 40G 98% /mnt/sdc
tmpfs 1,6G 16K 1,6G 1% /run/user/121
/dev/loop23 100M 100M 0 100% /snap/core/11316
/dev/loop20 141M 141M 0 100% /snap/gnome-3-26-1604/104
tmpfs 1,6G 0 1,6G 0% /run/user/1000
//192.168.50.2/Algo 16T 1,8T 15T 12% /mnt/sdd
/dev/loop10 62M 62M 0 100% /snap/core20/1026
/dev/loop25 244M 244M 0 100% /snap/gnome-3-38-2004/39
/dev/loop0 640K 640K 0 100% /snap/gnome-logs/106
/dev/loop7 768K 768K 0 100% /snap/gnome-characters/726
/dev/loop26 2,5M 2,5M 0 100% /snap/gnome-system-monitor/163
/dev/loop15 165M 165M 0 100% /snap/gnome-3-28-1804/161
@HuHa的建议：
wget https://github.com/shundhammer/qdirstat/raw/master/scripts/qdirstat-cache-writer
--2021-07-10 10:18:34-- https://github.com/shundhammer/qdirstat/raw/master/scripts/qdirstat-cache-writer
Resolving github.com (github.com)... 140.82.121.4
Connecting to github.com (github.com)|140.82.121.4|:443... connected.
HTTP request sent, awaiting response... 302 Found
Location: https://raw.githubusercontent.com/shundhammer/qdirstat/master/scripts/qdirstat-cache-writer [following]
--2021-07-10 10:18:34-- https://raw.githubusercontent.com/shundhammer/qdirstat/master/scripts/qdirstat-cache-writer
Resolving raw.githubusercontent.com (raw.githubusercontent.com)... 185.199.110.133, 185.199.109.133, 185.199.108.133, ...
Connecting to raw.githubusercontent.com (raw.githubusercontent.com)|185.199.110.133|:443... connected.
HTTP request sent, awaiting response... 200 OK
Length: 12542 (12K) [text/plain]
Saving to: ‘qdirstat-cache-writer’
qdirstat-cache-writer 100%[=======================================================================================================================>] 12,25K --.-KB/s in 0s
2021-07-10 10:18:34 (60,6 MB/s) - ‘qdirstat-cache-writer’ saved [12542/12542]
sda 有很多空间：
root@PC-IT-UBUIEX:/usr/local/bin# sudo qdirstat-cache-writer / /mnt/sda/myserver-root.cache.gz
sudo: qdirstat-cache-writer: command not found
答案1
执行
sudo du / -h --max-depth=1 | sort --human-numeric-sort
您应该可以看到那里的所有内容。从您发布的内容来看，似乎文件本身占用了大量空间/，这很奇怪。
请同时发布输出
uname -a
sudo ls -al /
sudo du /mnt -h --max-depth=1 | sort --human-numeric-sort
sudo ls -al /mnt
lsblk
笔记：
df不需要sudo
答案2
你可以使用下面的命令找到大文件
find / -type f -exec du -h {} + | sort -hr | head -20
1-find
查找目录内的所有文件
find / -type f 此命令只是查找目录中的所有文件（不是目录）。
2 –exec du -h {} +
查找所有文件，然后获取其可读大小
find / -type f -exec du -h {} + 现在，对于找到的每个文件，–exec 命令将执行命令 du -h，该命令以人性化的方式打印每个文件的大小（例如 2.4M）。有关更多信息
{} 要求 du 命令将 find 命令的结果作为输入 + 号要求 du 命令一次处理所有文件（这会使速度更快） 3 –| sort -hr
查找所有文件，然后获取其可读大小，然后按最大文件排序
find / -type f -exec du -h {} + | sort -hr | 符号是 Linux 管道，它将上一个命令（直到 du -h {} +）的输出重定向到新命令，即 sort。因此，您现在实际上是按人类可读的大小（-h）以相反的顺序（-r）对所有找到的文件（及其人类可读的大小）进行排序。
3 –| head -20
查找所有文件，然后获取其可读大小，然后按最大文件排序，最后仅打印前 20 个
find / -type f -exec du -h {} + | sort -hr | head -20