Mac OS Catalina: Detect when an USB device is connected

macos command-line usb

See if EventScripts meets your needs. From its web page:

  • EventScripts allows you to assign AppleScripts, shell scripts and Automator workflows to be run when certain events occur.

Events watched include USB connections and volume mounts.

I have only recently discovered this app and have not explored very far yet, so I would be interested in your comments.

Keyboard Maestro (which I have used for a few years) will do what you want, but is probably overkill (and over complex) unless you want to get further into Mac automation.

Related

Can you specify a Communications Device that allows mute Mac speakers without muting Communication Device?
How do I know who is sending me push notification and shut it down once and for all?
How do I set up automatic, incremental backup for my macOS Photos.app library?
Big Sur install bug on wiped out hard drive
kernel_task eating 1000% of my CPU regardless of the CPU being at 56-58 degrees
CSS animation delay in repeating
Submit form fields inside display:none element
IBOutlet is nil, but it is connected in storyboard, Swift
Foreach macro on macros arguments
How to get code point number for a given character in a utf-8 string?
Link ATLAS/MKL to an installed Numpy
Print an int in binary representation using C