ubuntu 查看文件缓存方法

查看文件夹大文件分布，进一步查看，深入一层查看，删除无关大文件

neardi@LPA3588:~$ sudo du -sh /* 2>/dev/null | sort -hr | head -20
7.0G    /home
3.5G    /usr
1.8G    /var
1.7G    /userdata
43M     /etc
26M     /system
12M     /rockchip-test
12M     /oem
5.1M    /tmp
2.3M    /run
240K    /root
16K     /lost+found
12K     /mnt
8.0K    /vendor
8.0K    /snap
8.0K    /media
8.0K    /firmware
8.0K    /dev
4.0K    /srv
4.0K    /opt
neardi@LPA3588:~$ du -h --max-depth=1 /home/neardi | sort -hr
7.0G    /home/neardi
5.2G    /home/neardi/.cache
1.6G    /home/neardi/.vscode-server
315M    /home/neardi/Desktop
7.4M    /home/neardi/.config
284K    /home/neardi/.local
260K    /home/neardi/.dotnet
12K     /home/neardi/.ssh
4.0K    /home/neardi/Videos
4.0K    /home/neardi/Templates
4.0K    /home/neardi/Public
4.0K    /home/neardi/Pictures
4.0K    /home/neardi/Music
4.0K    /home/neardi/Downloads
4.0K    /home/neardi/Documents
neardi@LPA3588:~$ du -sh /home/neardi/.cache/* | sort -hr
5.2G    /home/neardi/.cache/vscode-cpptools
1.3M    /home/neardi/.cache/mesa_shader_cache
928K    /home/neardi/.cache/fontconfig
688K    /home/neardi/.cache/gstreamer-1.0
192K    /home/neardi/.cache/ibus
64K     /home/neardi/.cache/chromium
52K     /home/neardi/.cache/evolution
40K     /home/neardi/.cache/menus
24K     /home/neardi/.cache/lxsession
12K     /home/neardi/.cache/thumbnails
12K     /home/neardi/.cache/openbox
12K     /home/neardi/.cache/Microsoft
0       /home/neardi/.cache/motd.legal-displayed
neardi@LPA3588:~$ rm -rf /home/neardi/.cache/vscode-cpptools
neardi@LPA3588:~$ df -h
Filesystem      Size  Used Avail Use% Mounted on
/dev/root        14G  7.8G  5.3G  60% /
tmpfs           3.9G     0  3.9G   0% /dev/shm
tmpfs           1.6G  2.2M  1.6G   1% /run
tmpfs           5.0M  4.0K  5.0M   1% /run/lock
/dev/mmcblk0p7   13M   12M     0 100% /oem
/dev/mmcblk0p8   44G  1.7G   42G   4% /userdata
tmpfs           792M   64K  792M   1% /run/user/1000