Good Monitoring Tools
From JoeHacker
Everyone knows about the top command. Here are some of my favorite monitor tools and command options.
Monitor hard drive activity and how may megabytes are read/written every 5 seconds.
iostat -m 5
A better top command
htop
Command to show only processes writing to the hard drive.
iotop -o
Shows network activity on eth0
iftop -i eth0
Another useful top command
atop