creating and deleting user accnt

1.adduser ....user --interactive
2.userdel user
3.su -s -u user
4.useradd -- non interactive
5.passwd user
6./etc/adduser.conf
7.deluser user
8.difference of system and non system user

9.useful ssh
http://kimmo.suominen.com/docs/ssh/

10.a client server setup
11.need to start a ssh session with the server,as a user on the server
12.the user account needs private and public key
13.the client gets the public key and is used with the server
14.article
http://www.symantec.com/connect/articles/ssh-host-key-protection
15.ssh-add can be used to add keys to frequently used secure sessions
16.ssh-agent

17.ssh has a client d and server daemon
/etc/init.d/ssh restart

18.ssh checklist
http://ubuntuforums.org/showthread.php?t=231451
19.ssh test
http://sial.org/howto/openssh/publickey-auth/
20.#ChallengeResponseAuthentication no -- modification in /etc/ssh/sshd_conf
AllowUsers gitosis,git
21.whoami .....login commands
22.basics of shell
http://www.linuxfromscratch.org/blfs/view/cvs/postlfs/profile.html

23.sudo -u git -i .... resets the $HOME etc

24.sudo useful
http://www.freesoftwaremagazine.com/articles/command_line_intro

25.Each user needs to be at /etc/sudoers file..use visudo ...use passwd to change password

26.standalone testing openssh
/usr/sbin/sshd -d -p 54321
ssh -p 54321 localhost
http://docstore.mik.ua/orelly/networking_2ndEd/ssh/ch12_01.htm