Rebuild accidentally deleted /dev
Solution 1:
I believe the contents of /dev are automatically rebuilt when you reboot.
To quote someone else:
When you start the system, the "udev" facility examines the hardware configuration (according to established rules) and dynamically creates the entries in /dev.
Solution 2:
When rebooting is NOT an option (you are working remotely on a machine in usa and you are on safari) this should do the trick:
udevadm control --reload-rules
udevadm trigger