[ssh]
$ ssh-keygen
$ ssh ubuntu@10.0.3.142 mkdir -p .ssh
$ cat .ssh/id_rsa.pub | ssh ubuntu@10.0.3.142 "cat >> .ssh/authorized_keys"

$ ssh -i .ssh/mykey.pem ubuntu@10.0.3.142

[scp]
$ scp .ssh/id_rsa.pub ubuntu@10.0.3.142:/home/ubuntu/.ssh/authorized_keys
$ scp -i mykey.pem mylogin@54.7.61.201:/home/mylogin/backup.tar.gz ./backups/january/

[ps]
$ ps -ef | grep init
$ pstree -p