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i have a cron job on my HPUX box, and it runs fine ( i believe ) but i want to change it to run at 3am and 7pm. i googled cron but couldn't find how to do this. <br />
also, is there a way to confirm that it is running? i was pretty sure it was running because every now and then i would get something in the log about it trying to sync a file but the file disappeared because it was a file in the print spool that is deleted once it prints.<br />
when i run<br />
<br />
crontab -e <br />
<br />
it looks like this<br />
<br />
&nbsp;0 0-23 * * * &nbsp;/usr/local/bin/rsync -au /DELTAR /t4mbu
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i have a cron job on my HPUX box, and it runs fine ( i believe ) but i want to change it to run at 3am and 7pm. i googled cron but couldn't find how to do this. 
also, is there a way to confirm that it is running? i was pretty sure it was running because every now and then i would get something in the log about it trying to sync a file but the file disappeared because it was a file in the print spool that is deleted once it prints.
when i run

crontab -e 

it looks like this

 0 0-23 * * *  /usr/local/bin/rsync -au /DELTAR /t4mbu

unix cron job

Unix is a multitasking, multi-user computer operating system originally developed in 1969 at Bell Labs. Today, it is a modern OS with many commercial flavors and licensees, including FreeBSD, Hewlett-Packard’s UX, IBM AIX and Apple Mac OS-X. Apart from its command-line interface, most UNIX variations support the standardized X Window System for GUIs, with the exception of the Mac OS, which uses a proprietary system.

Unix OS

Linux is a UNIX-like open source operating system with hundreds of distinct distributions, including: Fedora, openSUSE, Ubuntu, Debian, Slackware, Gentoo, CentOS, and Arch Linux. Linux is generally associated with web and database servers, but has become popular in many niche industries and applications.