How to execute the command in cronjob to display the output in terminal
You can't do this.
All cron
jobs are run in non-interactive shells, there is no terminal attachment. Hence the concept of /dev/tty
or similar is not available in cron
.
The dirty way could be to redirect the output of your program to the pts file of an already existing terminal.
To know the pts file just type tty command
~$ tty
/dev/pts/19
then your crontab would be:
* * * * * /usr/local/scripts/script.sh > /dev/pts/19