CRON(8) System Manager's Manual CRON(8)NAME
cron - daemon to execute scheduled commands (Vixie Cron)
SYNOPSIS
cron
DESCRIPTION
Cron should be started from /etc/rc or /etc/rc.local. It will return immediately, so you don't need to start it with '&'.
Cron searches /var/spool/cron for crontab files which are named after accounts in /etc/passwd; crontabs found are loaded into memory. Cron
also searches for /etc/crontab and the files in the /etc/cron.d/ directory, which are in a different format (see crontab(5)). Cron then
wakes up every minute, examining all stored crontabs, checking each command to see if it should be run in the current minute. When execut-
ing commands, any output is mailed to the owner of the crontab (or to the user named in the MAILTO environment variable in the crontab, if
such exists).
Additionally, cron checks each minute to see if its spool directory's modtime (or the modtime on /etc/crontab) has changed, and if it has,
cron will then examine the modtime on all crontabs and reload those which have changed. Thus cron need not be restarted whenever a crontab
file is modified. Note that the Crontab(1) command updates the modtime of the spool directory whenever it changes a crontab.
SEE ALSO crontab(1), crontab(5)AUTHOR
Paul Vixie <paul@vix.com>
4th Berkeley Distribution 20 December 1993 CRON(8)
Check Out this Related Man Page
CRON(8) System Manager's Manual CRON(8)NAME
cron - daemon to execute scheduled commands (Vixie Cron)
SYNOPSIS
cron
DESCRIPTION
Cron should be started from /etc/rc or /etc/rc.local. It will return immediately, so you don't need to start it with '&'.
Cron searches /var/spool/cron for crontab files which are named after accounts in /etc/passwd; crontabs found are loaded into memory. Cron
also searches for /etc/crontab and the files in the /etc/cron.d/ directory, which are in a different format (see crontab(5)). Cron then
wakes up every minute, examining all stored crontabs, checking each command to see if it should be run in the current minute. When execut-
ing commands, any output is mailed to the owner of the crontab (or to the user named in the MAILTO environment variable in the crontab, if
such exists).
Additionally, cron checks each minute to see if its spool directory's modtime (or the modtime on /etc/crontab) has changed, and if it has,
cron will then examine the modtime on all crontabs and reload those which have changed. Thus cron need not be restarted whenever a crontab
file is modified. Note that the Crontab(1) command updates the modtime of the spool directory whenever it changes a crontab.
SEE ALSO crontab(1), crontab(5)AUTHOR
Paul Vixie <paul@vix.com>
4th Berkeley Distribution 20 December 1993 CRON(8)
Hi,
I trying to include a script in my crontab as user. I used "crontab -e" to include my script there but does not seem to work. If I understand correctly it is set to run at 11:20 every day, correct?
Can anybody identify any error?
<pre>
#Sun Microsystems Inc. SunOS 5.7 Generic... (19 Replies)
Hi, there,
Here is the problem: I wrote a shell script for automatically do the file submission. This script runs great when I use command line. However, after I put it in the crontab for certain time runing, the error message I got was "System is not configured properly, unable to proceed". I... (21 Replies)
I'm trying to create a new crontab entry for a user on a debian box but whenever I do a crontab -e or crontab -u username -e then edit the crontab (with vim as my default editor) and :wq. I get the error message:
no crontab for username - using an empty one
crontab: no changes made to crontab... (18 Replies)
HI,
i am working on linux.
i have crontab problem
i wrote a small script and put it in a crontab .
but the script is not running..
i have given following way in crontab -e
02 06 * * * /bin/csh /home/vr_test.csh
but the above script is not running
please rectify my... (26 Replies)
I would like to schedule a job with crontab.
In the crontab file, I wrote:
0 12 20 11 * /export/home/x2693/project/scripts/perl test.pl 1 0 0
...but the output is:
Your "cron" job on suncbk11
/export/home/x2693/project/scripts/perl test.pl 1 0 0
produced the following output:
sh:... (17 Replies)
Hi..
At linux
I can edit crontab with command
$crontab -e
BUT I don't know to edit crontab at Solaris
because I tried with command $crontab -e
I can't do that
Can you help me...?
Thanks for solution
regards,
srilinux (25 Replies)
Hi all,
I am finding a issue with crontab that whatever the changes I made in the crontab file on the previous day wont be getting replicated today.
I saved the editor properly.
What would be the reason behind this.
For Eg: 03 12 * * * /gdbuat4/backupscripts/dailyexp10g.sh replaced to ... (33 Replies)
I am trying to schedule a job via cronjob. Not sure what the problem is. below is my script and the error.
45 10 * * * /u01/app/oracle/jpark/sched_exp_mis.sh
Error received.
Your "cron" job on tama
/u01/app/oracle/jpark/sched_exp_mis.sh
produced the following output:
... (19 Replies)
hi,
i have to backup a database everyday on a Sun Microsystem.
i have been looking around and have found that crontab might be the answer.
the list of steps that have to be followed for me to get the database is:
1. on cmd telnet the equipment.
2. put the user name and password.
3. i... (20 Replies)
Dear all,
I wrote a script and set it as a cron job to automatically download the data from the website.
Here is the problem, when I run this script in terminal, it works well, while it can not download the files when I run it as a cron job, I feel so weird.
The script as follows:... (28 Replies)
Hello,
I'd like to set a cron job that runs a shell script every 30 minutes or so to restart a java based service if the memory gets above 80%. Any advice on how to do this?
Thanks in advance!
- Ryan (19 Replies)
Hi All
I have a problem, I wonder if you can help me sort it out:
I have the following entry in the cron:
00 1,13 * * * /home/report/opn_amt_gestores_credito.ksh > opn_amt_gestores_credito.log
But the entry only runs at 01:07
I have stopped the cron deamon, and started, but it still... (39 Replies)
hi,
i am trying to execute a script through Cron, then everytime it is redirecting a message
stty: : No such device or address
Unmatched `
here is the cron entry:
35,40,45,50,55 04,05 07 08 * /uv1402/u207/home/bravodba/bestdbscript/shscriptfiles/bravo_main_refresh.sh
while the script... (20 Replies)
I am trying to run a script from crontab but the entire script (which is 70+ lines) is written in bash and I need it to run from a certain directory.
So when I run it manually I cd to /local/mnt/scr and then type ./reordersc and it works fine.
However, I want it to run from the crontab and I... (20 Replies)
Hi All,.
need your expertise, is there a way to create a script that will run with specific time without using cron. because i dont have access in cron.
TIA (19 Replies)