root@raspberrypi:~# apt autoremove
Reading package lists... Done
Building dependency tree
Reading state information... Done
The following packages will be REMOVED:
liblockfile-bin liblockfile1 libsigsegv2 libxcb-image0 libxcb-util0 lockfile-progs m4 procmail sendmail-base sendmail-cf sensible-mda
0 upgraded, 0 newly installed, 11 to remove and 54 not upgraded.
After this operation, 2,724 kB disk space will be freed.
Do you want to continue? [Y/n]
(Reading database ... 64631 files and directories currently installed.)
Removing sendmail-base (8.15.2-14~deb10u1) ...
Cleaning up the queues...find: '/var/spool/mqueue': No such file or directory
done.
Removing lockfile-progs (0.1.18) ...
Removing liblockfile1:armhf (1.14-1.1) ...
Removing liblockfile-bin (1.14-1.1) ...
Removing sendmail-cf (8.15.2-14~deb10u1) ...
Removing m4 (1.4.18-2) ...
Removing libsigsegv2:armhf (2.12-2) ...
Removing libxcb-image0:armhf (0.4.0-1+b2) ...
Removing libxcb-util0:armhf (0.3.8-3+b2) ...
Removing sensible-mda (8.15.2-14~deb10u1) ...
Removing procmail (3.22-26) ...
Processing triggers for man-db (2.8.5-2) ...
Processing triggers for install-info (6.5.0.dfsg.1-4+b1) ...
Processing triggers for libc-bin (2.28-10+rpi1) ...