Ssh to connect remotely

install openssh-server on the machine which is going to be visited

sudo apt install net-tools
ifconfig
#
sudo apt install openssh-server
# ask for the host ip
ip --brief addr show 

in the client machine the ssh-client has to be installed. Otherwise install it

sudo apt install openssh-client

Once we have the client installed we can connect to the other machine as follows

ssh dell@192.168.0.34
ssh worker-one@192.168.0.31
ssh worker@192.168.0.32
ssh Adv1!@192.168.0.34

the first time you connect you have to say yes to add the ssh key in your ssh keystore. In this way you can connect remotely.

If there is a problem with the fingerprint, you can remove it using this command and setting up the ip of the host with the ssh connection problem.

ssh-keygen -f "/home/worker-one/.ssh/known_hosts" -R "192.168.0.32"

copying files from one host to another

copy the folder of the local-user user to the remote user in the ip and folder

scp -r /home/local-user 192.168.0.31:/tmp

the first time you connect you have to say yes to add the ssh key in your ssh keystore. In this way you can connect remotely.

Rename user name

# Renaming Users in Linux
sudo usermod -l <new-name> <old-name>

# Changing a User’s Home Directory in Linux
sudo usermod -d /home/joedoe -m johndoe

# Changing a User’s UID
sudo usermod -u 5001 johndoe