Clearing the Icon Services cache in Yosemite • furbo.org

$ sudo find /private/var/folders/ \
  -name com.apple.dock.iconcache -exec rm {} \;

$ sudo find /private/var/folders/ \
  -name com.apple.iconservices -exec rm -rf {} \;

$ sudo rm -rf /Library/Caches/com.apple.iconservices.store