01-23-2006
Check the man pages of cron and crontab. To actually explain how cron works will be complicated.
7 More Discussions You Might Find Interesting
1. Shell Programming and Scripting
Hi,
from normal user(oracle) i am unable to run scheduled job in cron:
os version:
bash-2.03$ uname -a
SunOS sumail02 5.8 Generic_117350-39 sun4u sparc SUNW,Ultra-60
bash-2.03$ crontab -l
55 * * * * sh /oracle/statistics.sh > /dev/null 2>&1
bash-2.03$ cat /oracle/statistics.sh... (2 Replies)
Discussion started by: prakash.gr
2 Replies
2. Shell Programming and Scripting
Hi,
I want to run cron scheduler to run some script at different times of the day.But these times don't have some fix intervals. So how we can run jobs at 6:30AM, 1:00PM and 4:30PM everyday.
Please help.
Thanks
Neeraj (2 Replies)
Discussion started by: apjneeraj
2 Replies
3. Shell Programming and Scripting
Hi all,
I am new to cron jobs..
i wanted to schedule a cron job that wil send a mail to me at 3:00PM on 10th August ie is on Wednesday.
0 15 10 8 3 echo "message from UNIX here"|mail -s "your subject here" user@user.com
However this was not executed...
Can anyone please... (0 Replies)
Discussion started by: ch33ry
0 Replies
4. UNIX for Dummies Questions & Answers
Hi,
Can anyone help me out with scheduling a cron job for the below:
i wnated to delete file from a folder on every sunday at 05:00 AM
this is code i have used.
*******************************************************
0 05 * * 0 find /abc/xyz/pqrs/bak/ -type f -mtime +30 -exec rm -f... (5 Replies)
Discussion started by: ch33ry
5 Replies
5. Shell Programming and Scripting
Hi All,
Is there any way (any utility) to schedule a job to run once in a week on RedHat Linux ?
Note- Do not using Crontab.
Thanks
Pravin (1 Reply)
Discussion started by: pravin27
1 Replies
6. UNIX for Beginners Questions & Answers
Please guide me how to schedule the cron job to run on every Saturday at 6am with the interval of 21 days. (2 Replies)
Discussion started by: raghavendrajsv
2 Replies
7. UNIX for Beginners Questions & Answers
Scheduled job is not running on time.but it is running when executing same command manually.
25 10 * * * /code/bin/ACCOUNT.ksh 1 >/dev/null 2 >&1
Manually executing the same
Ksh -x /code/bin/ACCOUNT.ksh 1 >/dev/null 2 >&1
Followed steps
Crontab -e
Added the job to cron tab. (4 Replies)
Discussion started by: Myguest
4 Replies
CRON(8) System Manager's Manual CRON(8)
NAME
cron - clock daemon
SYNOPSIS
/usr/sbin/cron
DESCRIPTION
Cron executes commands at specified dates and times according to the instructions in the files /etc/crontab and /etc/crontab.local. None,
either one, or both of these files may be present. Since cron never exits, it should only be executed once. This is best done by running
cron from the initialization process through the file /etc/rc; see init(8).
The crontab files consist of lines of seven fields each. The fields are separated by spaces or tabs. The first five are integer patterns
to specify:
o minute (0-59)
o hour (0-23)
o day of the month (1-31)
o month of the year (1-12)
o day of the week (1-7 with 1 = Monday)
Each of these patterns may contain:
o a number in the range above
o two numbers separated by a minus meaning a range inclusive
o a list of numbers separated by commas meaning any of the numbers
o an asterisk meaning all legal values
The sixth field is a user name: the command will be run with that user's uid and permissions. The seventh field consists of all the text
on a line following the sixth field, including spaces and tabs; this text is treated as a command which is executed by the Shell at the
specified times. A percent character (``%'') in this field is translated to a new-line character.
Both crontab files are checked by cron every minute, on the minute.
FILES
/etc/crontab
/etc/crontab.local
7th Edition October 23, 1996 CRON(8)