C FAQ

Reference:
http://c-faq.com
http://www.lysator.liu.se/c/c-faq/c-2.html
http://home.netcom.com/~tjensen/ptr/pointers.htm

How To: Setup SSH/SCP without a password

If you want to ssh from homebox to servermachine with out prompting for password pls go through the rest.

From Linux machine

[humblejo@homebox .ssh]$ 
 Generate public/private dsa key pair
 ssh-keygen -t dsa
 chmod 600 id_dsa id_dsa.pub
 scp id_dsa.pub root@servermachine:/root/.ssh/tmpkey

[root@servermachine .ssh]# 
 cat tmpkey >> authorized_keys

[humblejo@homebox ~]$ 
 ssh root@servermachine
 ssh login without password is done...

From Windows machine

1. Download windows SSH client package PuTTY 0.60 from here

2. use puttygen.exe to generate public/private dsa key pair
2.a. Type of key to generate: SSH-2 DSA
2.b. Number of bits in a generated key: 1024

3. save private key without passphrase protection
4. Add pagent.exe on startup and add host private key on it

5. Add public key in the server machine
5.a. [root@servermachine ~]# 
     ssh-keygen -i -f tmpkey >> /root/.ssh/authorized_keys

6. PuTTY configuration -> Connection -> Data
   --> Auto-login user name ==> "root"

Reference:
http://www.hostingrails.com/HowTo-SSH-SCP-without-a-password

enable clipboard tranfer in linux vncserver

Being not able to copy/paste from linux machine through vncviewer was bugging me for a couple of day :(

Here is the solution:

vncconfig -nowin &
done...

vi ~/.vnc/xstartup
>>> vncconfig -nowin &
restart the linux machine...

step to kill a running vncserver:

cat ~/.vnc/hostname.4.pid

vncserver -kill :4
done...

reference:
http://linux.die.net/man/1/vncconfig
http://www.realvnc.com/products/free/4.1/man/vncserver.html