doyoudb2

With rsh and rlogin being phased out nearly everywhere and being replaced by ssh/secure login, lets see how to setup SSH public-key authentication to enable password-less secure login from one server to another. In simpler words how to login using ssh and without providing a password.

Let’s assume you have to setup automatic (password-less) ssh login from a server UX1 to another server UX2. The user on UX1 is USR1 and that on UX2 is USR2. Here is what you have to do:

Downloading that new db2 fixpak using ftp? The ftp runs for a couple of hours and then just when its about to finish your session terminates with a weird windows error.

Here is a solution to avoid such mishaps - run the ftp in background with nohup. This allows you to download large files without having to leave your telnet session open.

It is a common practice to use the 'kill -9' command to terminate a process. 'kill -9' or 'kill without mercy' as some like to call it, sends a SIGKILL signal to the process and simply yanks it out of the process table without permitting any cleanup activities. This should only be done only as a last resort after trying 'hangup' (kill -1 PID) then 'Abort' (kill -6 PID).  These two allow the process to terminate gracefully. In the case of the Abort, a core file is produced.