Script to detect when USB stick is plugged

Question

Script to detect when USB stick is plugged to my mac.
Is it possible?
Thank you!

Answer 1

How to invoke a Unix command from Applescript
Name: toggle-hidden
    Author: rccharles
    Copyright 2010 rccharles
    GNU General Public License
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
    the Free Software Foundation,  version 3
    This program is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
    GNU General Public License for more details.
    For a copy of the GNU General Public License see <http://www.gnu.org/licenses/>.
on run
    -- Write a message into the event log.
    log "  --- Starting on " & ((current date) as string) & " --- "
    try
        set results to do shell script "defaults read com.apple.finder AppleShowAllFiles"
        log "results = " & results
    on error errorMsg
        -- Most likely, the variable AppleShowAllFiles does not exit. 
        -- AppleShowAllFiles isn't defined in a newly created account.
        -- The write command below will create the AppleShowAllFiles variable.
        log "Error ..." & errorMsg
        set results to "FALSE"
    end try
    if results = "FALSE" then
        display dialog "Displaying all files.  Finder will restart." giving up after 2
        set the_rc to do shell script "defaults write com.apple.finder AppleShowAllFiles TRUE  ;killall Finder"
    else
        display dialog "Hiding hidden files.  Finder will restart.." giving up after 2
        set the_rc to do shell script "defaults write com.apple.finder AppleShowAllFiles FALSE  ;killall Finder"
    end if
end run