Linux

kill -s SIGINT <PID>

trap exit INT

#!/bin/bash
# user interrupt trap demo
function int_handler {
  echo "-- Tail interrupted"
RUN SECOND SET OF COMMANDS AFTER TAIL
 exit
}
# Establish interrupt handler
PERFORM TASKS BEFORE TAIL COMMAND
trap int_handler INT
# Do some work...
TAIL COMMAND

#!/bin/bash
# user interrupt trap demo
function int_handler {
echo "-- Tail interrupted"
}
# Establish interrupt handler
echo PERFORM TASKS BEFORE TAIL COMMAND
trap int_handler INT
# Do some work...
tail -f /var/log/syslog
echo RUN SECOND SET OF COMMANDS AFTER TAIL

doTail() {
while :
do
     trap break INT
     tail -F "${1}"
done
}
doTail /var/log/messages