add ssh reminder

docs/divers/server/ssh.md

@@ -0,0 +1,54 @@
+# SSH reminder
+
+## Remove a key from known hosts:
+
+    ssh-keygen -f "/home/user/.ssh/known_hosts" -R "key_name"
+    
+## Create a key:
+
+    ssh-keygen -o -a 100 -t ed25519 -C user@email #create an ED25519 key
+    ssh-keygen -b 4096 -t rsa -C user@email #create a RSA key
+    ssh-add newkey #add newkey to your SSH agent
+    ssh-add *
+    ssh-add .
+    
+## List existing keys:
+
+    ssh-add -l
+    
+## Display a key:
+
+    cat /home/user/.ssh/key_name
+    
+## Display a key fingerprint (with random art image):
+
+    ssh-keygen -lvf key_name
+
+## Enable SSH agent:
+
+    eval $(ssh-agent -s)
+
+## Copy a key to a distant server:
+
+    ssh-copy-id user@server #Copy all keys that are registered in SSH agent
+    ssh-copy-id -i newkey.pub user@server\n #Copy newkey.pub
+    
+## Remove a key:
+
+Removing a key from a server can be done by editing your `/home/user/.ssh/authorized_keys` file.
+    
+## Connect and copy from a different port number:
+
+    ssh -p port user@server
+    scp -P port file user@server:way/
+    rsync -e ssh -avz /source server:/target
+    rsync -ave ssh server:/source /target
+    ssh-copy-id -i newkey.pub -p port user@server
+
+## Connect a distant server in your file browser under Linux using SFTP:
+
+Type the adress:
+
+    ssh://user@server:port
+    
+*See also:* [Enabling a SSH key on a Synology NAS running DSM 6](https://gitlab.com/sakura-lain/ssh-synology-nas-dsm-6/)

mkdocs.yml

@@ -85,6 +85,7 @@ nav:
             - "Wordpress": divers/server/wordpress_docker-compose_on_debian-10_with_nginx_reverse-proxy.md 
             - "SSH - SAMBA": divers/server/serveur_debian_smb_ssh.md 
             - " Mémo Postgresql": divers/server/postgres.md
+            - " Mémo SSH": divers/server/ssh.md
         - "DevOps":
             - divers/devops/index.md
             - "Hugo": divers/devops/hugo.md