# crontab
# min, hour, day, month, day_of_week, command

# every 5 mins
*/5 * * * * /path/to/myscript.sh

# 0,2,4 mins
0,2,4 * * * * /path/to/myscript.sh

# 1-10 mins
1-10 * * * * /path/to/myscript.sh

# hourly
@hourly /path/to/myscript.sh
0 * * * * /path/to/myscript.sh

# startup
@reboot /path/to/myscript.sh