nnCron LITE is a small, but full-featured scheduler that can start applications and open documents at a specified schedule. Works with Windows Win9*,ME,NT,2000,XP,Vista. nnCron LITE is a perfect freeware Windows clone of a well-known UNIX scheduler Cron (including all the useful Anacron features). In my personal opinion, nnCron Lite outperforms more reliably than the default Windows Task Scheduler.
To use it to schedule the automatic execution of the cool JKDefragCmd.exe utility to defrag and speed up hard disks in Windows for instance, this is what you can do:
Steps in Brief:
(1) Download nnCron Lite from http://www.nncron.ru/ ,and install it to the directory of your choice (e.g. D:\gnu_fw\cron\). Allow the installer to add nnCron Lite to run and start up as a service automatically in Windows.
(2) When done, navigate into the utility's installed program directory and open up the cron.tab file (you can use any text editor such as notepad or the excellent notepad++)
(3) Entries in the cron.tab file follow the standard Unix/Linux cron convention format. Each field entry is separated from the next by a space, like so:
# Minutes Hours Days Months WeekDays Command
Note: The # symbol in the above illustration denotes a comment line.
(4) In my case where I use nnCron Lite to schedule my JKDefragCmd.exe file, these are some scheduling options that i have put into my cron.tab file:
# Minutes Hours Days Months WeekDays Command
# Uncomment the line immediately below to execute JkDefragCmd.exe for initial run
# 45 11 * * * "D:\gnu_fw\defrag\JkDefragCmd.exe -a 7 -d 2 c:* d:*"
# Command line execution of JkDefragCmd.exe (subsequent run) at 12hrs 15min everyday
15 12 * * * "D:\gnu_fw\defrag\JkDefragCmd.exe -a 3 -d 2 c:* d:*"
As you may have gathered from the above reading, the path "D:\gnu_fw\defrag\" is where i had unpacked the excellent JKDefragCmd.exe defrag software that I run everyday to speed up my hard disk performance in Windows.
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