I'm new to Ubuntu and trying to start sshd but having a lot of problems. I've tried uninstalling and reinstalling ssh by running sudo apt-get remove openssh-client openssh-server and sudo apt-get install openssh-client openssh-server. When I run sudo service ssh restart I get:

stop: Unknown instance:
ssh start/running, process 3638

sudo service sshd start gives me unrecognized service.

When I run ps -A | grep ssh I get nothing. Running ssh localhost gives me a connection refused.

  • Why is this tagged as sshd? I am facing a problem with it now, but it does not appear in the question, except the title.
    – gsamaras
    Jan 23, 2016 at 23:04

2 Answers 2


Try purging before install:

sudo apt-get purge openssh-server
sudo apt-get install openssh-server
  • turns out I apt remove'd openssh-server
    – user677955
    Jul 4, 2018 at 9:00

Ubuntu ssh service will start with ssh, not sshd.


 sudo apt-get remove --purge openssh-server
 sudo apt-get install openssh-server

Then try:

sudo service ssh restart   

To check its status:

sudo service ssh status

Config file can be found at /etc/init/ssh.conf

Detail about remove and purge:

remove - Does NOT remove including configuration files

purge - With Purge command, the configuration files are also deleted.

You must log in to answer this question.

Not the answer you're looking for? Browse other questions tagged .