07-28-2008
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10 More Discussions You Might Find Interesting
1. Filesystems, Disks and Memory
Does any know if crontab files are automatically backed up anywhere? I am trying to track down when I specific entry was added to one of my crontab files and cannot just use the most recent timestamp on the latest version of the file. (1 Reply)
Discussion started by: mclaughline
1 Replies
2. Shell Programming and Scripting
hello Unix Guru's
I need help to write crontab ..
i want to run my script everyday . It should start after 12:00 midnight everyday .
But on Friday i dont want to start that script at 12:00 midnight but want to start after 3:00 a.m .
any way to write cronttab like this ..
my... (4 Replies)
Discussion started by: deepa20
4 Replies
3. Shell Programming and Scripting
I need help writing a script that will reformat a crontab file. The first thing the script is doing is a crontab -l > crontab.txt. I need the crontab.txt file to read "8.00 PM every weekday (Mon-Fri) only in Oct." instead of the orig format "0 20 * 10 1-5" (1 Reply)
Discussion started by: alnita
1 Replies
4. Shell Programming and Scripting
Hi All,
There are some cron jobs scheduled already by someone, now I have to make some changes to the schedule timings. Please advise me.
thanks,
Raju (2 Replies)
Discussion started by: rajus19
2 Replies
5. UNIX for Dummies Questions & Answers
I have a crontab file called /var/spool/cron/root with these contents. When I use the command, crontab -l, these are the contents which are displayed.
HOME=/
MAILTO=maintenance@mycompany.com; robl@mycompany.com
PATH=/sbin:/bin:/usr/sbin:/usr/bin
SHELL=/bin/bash
##run-parts... (2 Replies)
Discussion started by: bobble14988
2 Replies
6. Shell Programming and Scripting
Hello,
I am new to shell scripting. I need to write a shell script where i can grep the name of file ie. .sh file and log file from crontab -l.
#51 18 * * * /home/oracle/refresh/refresh_ug634.sh > /home/oracle/refresh/refresh_ug634.sh.log 2>&1
#40 17 * * * /home/oracle/refresh/refresh_ux634.sh... (1 Reply)
Discussion started by: guptra
1 Replies
7. UNIX for Dummies Questions & Answers
Hey out there. I have a .sh file I am calling from cron that I am trying to use to shut down the app at midnight. I have a file that does it and works just fine if I run it by typing "bash crontabstop.sh" from a command prompt. But if I call the file from a crontab I get this output.... (5 Replies)
Discussion started by: vsekvsek
5 Replies
8. Solaris
Hi guys,
I edited my crontab file and entered this enter:
* * * * * w >> `date +%F`.who
Then I later deleted the above entry and entered :
* * * * * w >> /rpool/who/w.txt
when I login and ran : crontab -e
I get this entry:
* * * * * w >> `date +%F`.who
Instead of this entry:
*... (3 Replies)
Discussion started by: cjashu
3 Replies
9. UNIX for Dummies Questions & Answers
Hi,
I have a solaris 10 box. And I want to schedule a cronjob.But it gives the following error
bash-3.2$ crontab -l
crontab: can't open your crontab file.
bash-3.2$ EDITOR=vi
bash-3.2$ export EDITOR
bash-3.2$ crontab -e
crontab: can't open your crontab file.
I checked in... (12 Replies)
Discussion started by: Rossdba
12 Replies
10. UNIX for Advanced & Expert Users
I keep getting the crontab No such file or directory error message.
0,30,31,32,33,34,35,36,37,38,39,40 * * * * "/bin/ps aux --sort -\%mem >> /home/m/bob/cookies"
I have made sure my directory exists.
find /home/m/bob -iname 'cookies' 2>/dev/null
/home/m/bob/cookies
I am using the full... (3 Replies)
Discussion started by: cokedude
3 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)