MacOS – Apple Keyboard with numeric keypad problems

One option is to create ~/Library/KeyBindings/ and save a property list like this as ~/Library/KeyBindings/DefaultKeyBinding.dict:

{
  "\UF729"  = moveToBeginningOfLine:;
  "\UF72B"  = moveToEndOfLine:;
  "$\UF729" = moveToBeginningOfLineAndModifySelection:;
  "$\UF72B" = moveToEndOfLineAndModifySelection:;
}

Quit and reopen applications to apply the changes. Note that DefaultKeyBinding.dict is not supported by some applications like Xcode or Firefox.

In Terminal you can assign home (↖) to control-a and end (↘) to control-e from Preferences > Settings > Keyboard. That will leave you with no key combinations to scroll to the top or bottom of a window though.

It might be easier to just use the default keybindings. In most native text views:

• control-A or option-up goes to the beginning of a paragraph
• control-E or option-up goes to the end of a paragraph
• command-left goes to the beginning of a line
• command-right goes to the end of a line

You can modify the NSUserKeyEquivalents dictionary in ~/Library/Preferences/com.apple.finder.plist:

defaults write com.apple.finder NSUserKeyEquivalents -dict-add 'Move to Trash' '\U007F'
killall Finder

It also makes ⌦ move items to trash in rename mode, and it makes ⌘⌫ do nothing.

Forward delete is \U007F and delete is \b or \U0008, even though in DefaultKeyBinding.dict delete is \U007F and forward delete is \UF728. The shortcut string format is described in the Cocoa Text System article.