Expect shell script to update all logstash plugins on Linux systems

update-all-plugins.sh

#!/usr/bin/expect

set timeout -1 
set count 200

spawn /opt/logstash/bin/plugin update

while {$count > 0} {
    set count [expr $count-1];
    expect {
        "(Y/N)?" {
            send "Y\r"
        }
        "Updating logstash" {
            set count 0
        }
    }
}

expect "Updated"