iTerm keybindings to use your keyboard to select text
From iTerm, go to: Preferences > Profiles > Keys
Click + to add a keybinding, Click to Set
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⌥ ← | Action: Move start of selection back > Move by character
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⌥ → | Action: Move end of selection forward > Move by character
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⌥ ⇧ ← | Action: Move start of selection back > Move by word
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⌥ ⇧ → | Action: Move end of selection forward > Move by word
Source: https://stackoverflow.com/questions/30055402/how-to-select-text-in-iterm-with-shiftarrow