Windows 7: Defrag hard disk from command line or schedule a task manually

Windows 7 defrag GUI tool is simple and easy.  Click Start Orb, type Defrag and Press Enter. You can configure schedule to defrag automatically on your specified time. I usually choose the day time, because my laptop is off during night.

Here are command line options for more control (check out /X option).

Defrag <volume> | /C | /E <volumes> [/A | /X | /T] [/H] [/M] [/U] [/V]
The options for Defrag.exe are:

• <volume> The drive letter or mount point of the volume to defragment.
• /C Defragment all local volumes on the computer.
• /E Defragment all local volumes on the computer except those specified.
• /A Display a fragmentation analysis report for the specified volume without defrag¬menting it.
• /X Perform free-space consolidation. Free-space consolidation is useful if you need to shrink a volume, and it can reduce fragmentation of future files.
• /T Track an operation already in progress on the specified volume.
• /H Run the operation at normal priority instead of the default low priority. Specify this option if a computer is not otherwise in use.
• /M Defragment multiple volumes simultaneously, in parallel. This is primarily useful for computers that can access multiple disks simultaneously, such as those using SCSI- or SATA-based disks rather than disks with an IDE interface.
• /U Print the progress of the operation on the screen.
• /V Verbose mode. Provides additional detail and statistics.

I like this geek cartoon, by the way. Found at http://geekandpoke.typepad.com/geekandpoke/2010/11/geek-gen-x.html