02-19-2001
Didn't you get any warning mail from crontab?
Crontab is designed so that if there are any problems running your program at the specified time, it will send a warning mail to your account.
try the following
First save the current crontab using the command:
crontab -l > cronfile.backup
then edit a new crontab file using vi(or your favourite) which contains only these lines.
# cron testing
* * * * * echo Date is `date` > /dev/console
then load it using..
crontab cronfile
Now cron should run every minute the date command and display it to the console.
This will at least test to see if cron is working.
You may also want to check cron.allow and cron.deny files
man crontab for more details.
and also check /var/log/cron
for your current purpose you can use 'at' command. Although it is not a substitute to cron it will help you untill you resolves your crontab problem.
note: To restore your actual cronfile after testing first remove current cronfile using crontab -r then crontab cronfile.backup
[Edited by mib on 02-19-2001 at 02:47 AM]
10 More Discussions You Might Find Interesting
1. UNIX for Advanced & Expert Users
Hi, I am having a few problems with cron.
I have created a shell script (to rotate www logs - this works) and then did the following (as root)
#crontab -e
2 0 * * 3 /cron_scripts/wwwlogs.sh
?
w
?
q
#
crontab -l
entry not shown e.g. it did not show what I had just writern
I then... (6 Replies)
Discussion started by: warrend
6 Replies
2. UNIX for Dummies Questions & Answers
Hi there,
this time a have a other problem :)
i will start a script over the cron.
if i start the script manual (per command) it works without any problems, but over the cron it doesent work.
my cron looks like this:
26 15 * * * /path/scriptname.sh 2> /path/error.log
there is no... (3 Replies)
Discussion started by: scotty
3 Replies
3. Shell Programming and Scripting
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 Replies)
Discussion started by: ravi.sadani19
2 Replies
4. Shell Programming and Scripting
Hi,
when i am trying to FTP one file (test.txt) from Unix server to my local machine then i am getting the following error, as shown below
ftp> binary
200 Type set to I.
ftp> put C:\FTP\test.txt
C:FTPtest.txt: No such file or directory
ftp>
The red color text is the error.
Can... (3 Replies)
Discussion started by: sunitachoudhury
3 Replies
5. UNIX for Dummies Questions & Answers
Hi,
I wrote a script which generates a mail automatically under certain condition. When i execute the script manually in unix the script is getting executed and the condition works accordingly and the mail is also generated. But when it is pu into cron the mail is not generated and the... (4 Replies)
Discussion started by: thiru_cs
4 Replies
6. UNIX for Dummies Questions & Answers
Hey all.
Im totally new with makeing websites ect
The thing is, i wanted to make one of those pimp games, so i installed a script called mypimpscript.. it works but the 10mins cron jobs dont...
ive tried to set it up in cpanel, but im doing it wrong :S
right now it looks like this php... (1 Reply)
Discussion started by: princess
1 Replies
7. UNIX for Dummies Questions & Answers
Hi,
I've created a cron job for a script with a rsync command in it. The script is named pull.sh and contains the following line :
What it is supposed to do is pull backup files from the production server of my company to my local server. It should also generate the log file (output.log)... (1 Reply)
Discussion started by: anaigini45
1 Replies
8. UNIX for Dummies Questions & Answers
I am trying to setup a cron that runs a script to update my ip for my domain name every time I reboot and checks if my ip changes every 5 minutes and if it does then I update it. I am running Ubuntu server 12.04.
The file /etc/cron.d/ipupdate contains
#
#
# Run ipupdate
#
#
/5 * ... (3 Replies)
Discussion started by: Bros2
3 Replies
9. Shell Programming and Scripting
I am new to creating crontab file , i just wrote below
(40 19 * 3 * /root/maths/practisecron.sh), the script just prints "Hi".
When ever i save the above file i am getting this .
# crontab -e
crontab: installing new crontab
Can you please check where it went wrong.. (1 Reply)
Discussion started by: vkiyv05
1 Replies
10. UNIX for Beginners Questions & Answers
Hi I want to set up a cron for every 15 minutes between some hours.
Can you tell whether the below command will work.
Getting confuse because my time goes from night to next day morning.
i want to setup 8 PM to next day 10 AM.
*/15 20-10 * * * sh abc.sh (1 Reply)
Discussion started by: raju2016
1 Replies
LEARN ABOUT NETBSD
crontab
CRONTAB(1) BSD General Commands Manual CRONTAB(1)
NAME
crontab -- maintain crontab files for individual users (ISC Cron V4.1)
SYNOPSIS
crontab [-u user]
crontab [-elr]
DESCRIPTION
crontab is the program used to install, deinstall, or list the tables used to drive the cron(8) daemon in ISC Cron. Each user can have their
own crontab, and though these are files in /var/cron, they are not intended to be edited directly.
If the /var/cron/allow file exists, then you must be listed therein in order to be allowed to use this command. If the /var/cron/allow file
does not exist but the /var/cron/deny file does exist, then you must not be listed in the /var/cron/deny file in order to use this command.
If neither of these files exists, depending on the compiled in settings, only the super user will be allowed to use this command, or everyone
will be allowed to use this command. On NetBSD everyone is allowed to use this command.
The default maximum size for a crontab is 256 kilobytes, but this may be changed for all users on the system by putting the desired maximum
size (in bytes) in the /var/cron/maxtabsize file.
If the -u option is given, it specifies the name of the user whose crontab is to be tweaked. If this option is not given, crontab examines
``your'' crontab, i.e., the crontab of the person executing the command. Note that su(1) can confuse crontab and that if you are running
inside of su(1) you should always use the -u option for safety's sake.
The first form of this command is used to install a new crontab from some named file or standard input if the pseudo-filename ``-'' is given.
The -l option causes the current crontab to be displayed on standard output.
The -r option causes the current crontab to be removed.
The -e option is used to edit the current crontab using the editor specified by the VISUAL or EDITOR environment variables. After you exit
from the editor, the modified crontab will be installed automatically.
FILES
/var/cron/allow Optional list of users that are allowed to use crontab.
/var/cron/deny Optional list of users that are disallowed to use crontab.
/var/cron/maxtabsize Maximum size of crontab files. Defaults to 256 kilobytes.
/var/cron/tabs/ Directory containing the individual user crontab files, named after the user.
DIAGNOSTICS
A fairly informative usage message appears if you run it with a bad command line.
SEE ALSO
crontab(5), cron(8)
STANDARDS
The crontab command conforms to IEEE Std 1003.2 (``POSIX.2''). This new command syntax differs from previous versions of Vixie Cron, as well
as from the classic Version 3 AT&T UNIX syntax.
AUTHORS
Paul Vixie <vixie@isc.org>
BSD
May 6, 2010 BSD