I am studying linux on my raspberry pi that installed debian version.
There were no problem, worked perfectly in crontab, but something has occured.
@reboot sudo bash /home/pi/IP_check.sh */10 9-24 * * * sudo bash /home/pi/IP_check.sh
Shell script has no problem, but don't work at every 10 mins. There is not any log in /var/log/syslog. It seems perfectly ignored. But @reboot is working, also the filelog exists in /var/log/syslog, but just for the reboot. I surely checked permission to execute (r-x), tried re-install the crontab but it doesn't fixed anything.
What can I try something for solve this problem?