Can no longer connect via ssh

[cuckooflew]

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sam@sam-1215P:~$ systemctl status sshd
Unit sshd.service could not be found. 

Well, this pretty much speaks for itself, Also this: http://forums.debian.net/viewtopic.php?f=30&t=146981 From the other topic you started, you show this:

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openssh-client install
[b]openssh-server deinstall[/b]
openssl install 

in your list. You know "deinstall", means remove ? It is simple, easy, to just check and see if it: (openssh-server ) is installed.

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dpkg --list | grep ssh 

If it does not show in the list, you need to install it, if it is in the list, you need to look at some other things, check to see if it even is installed first.

I'll try again tomorow.

Unless you change something between.today and tomorrow, it will be the same tomorrow as it is today, EG: install openssh-server today, and it will work again tomorrow.
If everything you need won't fit on a 1gb, flash stick, then you simply need to get a bigger one. Remove other things, will just succeed in breaking something else, eg; foo package , but foo package includes dependencies that foo2 package needs, you need to have enough drive space for all of the essential programs/packages. + some extra.. Even a Minix3 server needs at least 1.2gb to be functional, Debian is going to need more space, even if it is just the base (minimal install)

[cuckooflew]

Here is what a working ssh server looks like , using the commands posted in the previous posts:

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cuckoo@debian:~$ systemctl status sshd
* ssh.service - OpenBSD Secure Shell server
   Loaded: loaded (/lib/systemd/system/ssh.service; enabled; vendor preset: enabled)
   Active: active (running) since Tue 2020-08-04 09:03:04 CDT; 5h 9min ago
     Docs: man:sshd(8)
           man:sshd_config(5)
  Process: 412 ExecStartPre=/usr/sbin/sshd -t (code=exited, status=0/SUCCESS)
 Main PID: 425 (sshd)
    Tasks: 1 (limit: 1141)
   Memory: 2.4M
   CGroup: /system.slice/ssh.service
           `-425 /usr/sbin/sshd -D 

======================

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cuckoo@debian:~$dpkg --list | grep ssh 
ii  libssh-gcrypt-4:amd64                0.8.7-1+deb10u1                     amd64        tiny C SSH library (gcrypt flavor)
ii  libssh2-1:amd64                      1.8.0-2.1                           amd64        SSH2 client-side library
ii  openssh-client                       1:7.9p1-10+deb10u2                  amd64        secure shell (SSH) client, for secure access to remote machines
ii  openssh-server                       1:7.9p1-10+deb10u2                  amd64        secure shell (SSH) server, for secure access from remote machines
ii  openssh-sftp-server                  1:7.9p1-10+deb10u2                  amd64        secure shell (SSH) sftp server module, for SFTP access from remote machines
ii  task-ssh-server                      3.53                                all          SSH server

 

[debianneedstuning]

FWIW; When I recently had this problem after a version upgrade on a headless server, I was unable to fault find and in the end I apt-get remove'd openssh and openssh-server and reinstalled them. Just my 2c.