NirCmd is a small command-line utility that allows you to do some useful tasks without displaying any user interface.

• Open the door of J: CD-ROM drive        ->         nircmd.exe cdrom open j:
• Close the door of Y: CD-ROM drive        ->         nircmd.exe cdrom close y:
• Speaks the text currently in the clipboard (For Windows XP and Vista).        ->         speak text ~$clipboard$
• Increase the system volume by 2000 units (out of 65535)        ->         nircmd.exe changesysvolume 2000
• Decrease the system volume by 5000 units (out of 65535)        ->         nircmd.exe changesysvolume -5000
• Set the volume to the highest value        ->         nircmd.exe setsysvolume 65535
• Mute the system volume        ->         nircmd.exe mutesysvolume 1
• Unmute the system volume        ->         nircmd.exe mutesysvolume 0
• Switch the system volume between the mute and normal state.        ->         nircmd.exe mutesysvolume 2
• Click here to see more examples