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iterm key bindings
In OSX, ⌥+⌫ and ⌘+⌫ are the shortcuts for deleting a word and deleting a line respectively. ⌘+ ← and ⌘+ → are for going to the beginning and end of lines. By default, iTerm2 isn't configured this way, and there are a lot of misleading guides online. The following is what I've found to work on my machine.
Open the preferences (⌘+,) and go to the Keys tab. Add a global shortcut key, and just type in your shortcut In the Action dropdown, select Send Hex Code The hex codes for...
Deleting a word: 0x17. Deleting a line: 0x15. Moving to the beginning of the line: 0x01. Moving to the end of the line: 0x05. Just open a new tab, and it should work!