This helps when you have to chase down stupid stuff all day, every day:
Launch iTerm2
Go to iTerm2 – Preferences – Profiles – Advanced – Triggers – Edit
Click +
In the Regex, type: (error|ERROR|Error)
Action: Highlight Text
Pick a color, Pick a background color that stand out for you
Check the Instant box
Close back out
I have:
(Fail|FAIL|fail)
(Differ|DIFFER|differ)
(Insufficient|INSUFFICIENT|insufficient)
(Access|ACCESS|access)
(Denied|DENIED|denied)
(Error|ERROR|error)