# ssh ohne password einrichten
# Ausgangs-Host:
# 	1.$HOME/.ssh anlegen
#	2.im Verzeichnis: ssh-keygen -N "" -t dsa -f id_dsa
#	3.erzeugt Files id_dsa und id_dsa.pub
#
# Ziel-Host: 
#	1.$HOME/.ssh anlegen
#	2.im Verzeichnis file authorized_keys anlegen mit Inhalt id_dsa.pub vom Ausgangs-Host


#--------------------------------------------------------------------------------
# Kommando mit ssh auf remote system absetzen
ssh  $user@$host  cat $home1/.ssh/id_dsa.pub_* ">>" $home1/.ssh/authorized_keys


#--------------------------------------------------------------------------------
# Script zum erzeugen des authorized_keys Files ("add_host")
vi add_host
---> Script Anfang
cat authorized_keys 2>/dev/null id_dsa.pub_${1} >> tmp_authorized_keys
sort -u tmp_authorized_keys > authorized_keys
rm tmp_authorized_keys
---> Script Ende
chmod 700 add_host


#--------------------------------------------------------------------------------
# Use Putty with public/private key
- use PUTTYGEN.EXE to generate new public key
- save private and public key files (hajo_private.ppk and hajo_public on D:\Users\HansJoachimRuehl\.ssh\)
- copy content (key) of upper window and paste it on target in authorized_keys file


#--------------------------------------------------------------------------------
# Useful Commands...
mv  id_dsa.pub id_dsa.pub_$(uname -n)                         # anhängen des Hostnamens an das Public File
scp id_dsa.pub_$(uname -n) <remote_host>:/home/oracle/.ssh/   # Public File zu Remote Host kopieren