gkrellm is a nice system monitor that keeps a tab on CPU, disk, proc, network, NFS, memory, and swap usage, along with a whole host of other things. I find it to be an invaluable tool, along with xosview. To install it, use yum:
~> sudo yum install gkrellm gkrellm-aclock gkrellm-daemon gkrellm-freq gkrellm-moon gkrellm-sun gkrellm-timestamp gkrellm-top gkrellm-volume gkrellm-weather gkrellm-wifiPress 'y' when prompted to install the programs and any additional dependencies. You are now ready to launch gkrellm:
~> gkrellm &Again, gkrellm is a wonderful little system monitor that provides some very useful information about the state of your system. To learn more about it, read the man page.