What is the issue in here how come its wrong ?
After installing cronie and ensuring the crond service is running,
You can add the "*/5 * * * * echo hello > /tmp/cron_text" line to /etc/crontab file, and restart the crond service.
Also, make sure that when adding a cron job definition to a global crontab, like /etc/crontab, you follow the correct syntax, i.e you put a username in between the time/date designation and a command - */5 * * * * root echo "hello" > /tmp/cron_text.
If the crond service is already running, it doesn’t have to be restarted.