Simulate taking USB cable in and out I have a MacBook at home, where I have a webcam connected to.

The problem is I'm not at home and the surveillance software I'm using can't see it.

Is it possible to simulate taking the USB cable out and putting it back in again?
Try 

sudo kextunload -b "com.apple.driver.usb.AppleUSBEHCIPCI"; sleep 5; sudo kextload -b "com.apple.driver.usb.AppleUSBEHCIPCI"


Works on my system, just tested it. I had to run the command 3 times though because for 2 times my usb camera didn't reconnect correctly, no idea why that happened.

Or similar to this with the full path

sudo kextunload /System/Library/Extensions/IOUSBMassStorageClass.kext
sudo kextload /System/Library/Extensions/IOUSBMassStorageClass.kext


Oh well, this work