Ctrl+w everywhere

$ vim ~/Library/KeyBindings/DefaultKeyBinding.dict

{
    "^w" = "deleteWordBackward:";
}

VScode key repeating

$ defaults delete com.microsoft.VSCode ApplePressAndHoldEnabled
$ defaults write com.microsoft.VSCode ApplePressAndHoldEnabled -bool false

Font Smoothing

$ defaults -currentHost write -g AppleFontSmoothing -int 0
$ sudo reboot

Note that you can adjust the level of smoothing more granually by changing the number at the end of this command. The 0 disables font smoothing, while 1 enables light font smoothing, 2 enables default medium smoothing, and 3 enables strong smoothing. For example, if after disabling font smoothing you want to return to the default setting, replace the 0 at the end of the command with a 2.

Set Hostname

$ sudo scutil --set ComputerName "NewHostName"
$ sudo scutil --set HostName "NewHostName"
$ sudo scutil --set LocalHostName "NewHostName"