How to Schedule job using cron(URGENT)

Shell Programming and Scripting
1

Hello All,

I m newbie to Job scheduling.

Suppose i have 2 files s1.sh and s2.sh i want to make a schedule such as

run s1.sh at 2AM everyday and run s2.sh 9Pm everyday.

Can anyone tell me how to schdule that using CRON and i want to know what is CRON and CRONTAB.

Thanks in advance

2

Check the man pages of cron and crontab. To actually explain how cron works will be complicated.

3

please check the crobtab menu to add the crontab entry the explation is more or less like this
#1st field: minute (0-59),
#2nd field: hour (0-23),
#3rd field: day of the month (1-31),
#4th field: month of the year (1-12),
#5th field: day of the week (0-6 with 0=Sunday).
#6th field: Script to start

on example

00 17 * * 3 /home/test.sh

This shell script run 17th hour, every day(since there is a * ), every month ( since there is a * ), 3rd day ( which is wednesday )

Check the menu of crontab whether the cron file is there in your system.

rajesh