apt update && apt -y full-upgrade && apt -y autoremove && apt autoclean

snap refresh && rm -rf /var/lib/snapd/cache/*

bleachbit

 Name                             Last modified      Size  Description
 Parent Directory                                      -   
 _config/                         2023-08-22 12:13    -   
 _etc_apt_sources.list.d_tmp.list 2017-03-03 13:35   99   
 _profile                         2017-02-06 10:02  371   
 _Xdefaults                       2023-08-29 12:29  2.1K  
 asennus.txt                      2023-11-22 22:05  4.3K  
 Asound.conf.txt                  2017-02-06 10:02  294   
 chiselled-containers/            2023-09-22 14:52    -   make them small again
 dotnet/                          2023-02-10 17:00    -   
 dropped-to-initramfs/            2022-11-27 16:29    -   
 esm-apps/                        2023-09-24 10:45    -   ubuntu pro subscription
 jwmrc.txt                        2023-09-16 01:21  6.8K  
 lempipaketit.txt                 2021-04-09 16:27  401   
 microcloud/                      2023-11-16 23:44    -   
 mokutil/                         2024-04-13 15:04    -   
 openbox/                         2023-08-22 12:13    -   
 poista                           2020-01-30 09:44  4.0K  
 real-time/                       2023-02-16 00:24    -   
 sources.list.JAMMY               2024-02-21 21:56  902   
 sources.list.MANTIC              2023-09-22 12:28  415   
 trusty_low_end_raudalla/         2020-01-13 23:00    -   

journalctl --vacuum-time=1d   # if out of disk space

# remove snaps? e.g.
lsblk # note all 
umount /snap/core20/1169 
umount /snap/lxd/21624 
umount /snap/snapd/13170 
... ...
snap remove core20 
snap remove lxd
... ...
snap remove snapd 
systemctl stop snapd
systemctl stop snapd.socket 
apt -y purge snapd


Ubuntu default for nVidia (if auto-uninstalled😆)

  $ sudo ubuntu-drivers autoinstall

why?

Huge /var/log/journal ? once:

  # journalctl --vacuum-size=100M
  # journalctl --vacuum-time=3d

permanently:

# vi /etc/systemd/journald.conf
   .
   .
   SystemMaxUse=100M

# systemctl restart  systemd-journald

kvm/qemu on debian

reshape a data array? man rs
 ^
 ^ nice reading 


The Lovely Debian Wallpaper, 25 kB?
/usr/share/desktop-base/softwaves-theme/wallpaper/contents/images/2560x1440.svg