Checking memory (RAM) size on Solaris

If you want to check how much RAM your Solaris machine has, here's how:
/usr/sbin/prtdiag -v | grep -i memory

You can also try:
/usr/sbin/prtconf | grep -i memory

Removing password expiry from your unix machine (Linux and Solaris)

Here's a quick one. If you have a server and you do not want the password for a user to expire (as it can screw some things up while its active), you need to execute the following commands as root:

passwd -x -1

where is the username whose password expiry you wish to remove. For instance, in my case, if username is dm014, I executed:

passwd -x -1 dm014

I have tested this and it works flawlessly on linux and solaris.