try giving the
to capture the error and also ...can you try to enclose the whole command with in
---------- Post updated at 07:42 PM ---------- Previous update was at 07:27 PM ----------
found some information which can be useful
cron will email you the output of any program it runs (if there is any output). So, if you don't get any output, there are basically three possibilities:
crond could not even start a shell for running the program or sending email
crond had troubles mailing the output, or the mail was lost.
the program did not produce any output (including error messages)
Case 1. is very unlikely, but something should have been written in the cron logs. Cron has an own reserved syslog facility, so you should have a look into /etc/syslog.conf (or the equivalent file in your distro) to see where messages of facility cron are sent. Popular destinations include
and
In case 2., you should inspect the mailer daemon logs: messages from the Cron daemon usually appear as from
. You can use a
line in the crontab file to have cron send email to a specific address, which should make it easier to grep the mailer daemon logs. For instance:
In case 3., you can test if the program was actually run by appending another command whose effect you can easily check: for instance,
so you can check if crond has actually run something by looking at the mtime of /<some -path>/sucessfullrun
Hi All,
I created a shell script and it works perfectly fine when I run from the command. But the same does not work as expected when I call it from a cron job.
Here is the shell script(scan.sh):
#
#
#Which directory to scan for files?... (7 Replies)
Hey there, I'm a total newbie unix guy here and just picking this stuff up. Have a very small script I put together that works fine from the command line but not once I put it in a cron job. Searched and found this thread and am wondering it it has something to do with setting variables, though the... (7 Replies)
Hello, I have the following crontab entry that does not seem to be running. When I check /var/cron/log, it is not there. Here is my os info:
SunOS birch 5.9 Generic_118558-09 sun4u sparc SUNW,Sun-Fire-V240
Here is the crontab entry:
01 21 * * * find /export/app/datafeed/flus/archive -mtime... (5 Replies)
I set up a new cron job. I have set cron jobs many times in the past and never faced issues. For some reasons my new cron job is not working.This is how my cron job looks like. plz help me out guys.
3,8,13,18,23,28,33,38,43,48,53,58 * * * * /siebel/sblp900/home/FSMTaskChk/script... (14 Replies)
I have a very basic script that essentially sends a log file, via FTP, to a backup server. My cron entry to run this every night is:
55 23 * * * /usr/bin/archive_logs
The script runs perfectly when executed manually, and actually worked via cron for about three weeks. However, it mysteriously... (3 Replies)
Hello,
I have written a script that has a sudo command to change file permissions within it.
When I run the script manually, the sudo command inside of it works fine.
When the script is run through crontab I get the error "cron: not found".
It the same user profile that I am using... (6 Replies)
/usr/bin/find $SEARCH_DIR -daystart \( \( -name 'KI*' -a -name '*.csv' \) -o -name '*_xyz_*' \) -mtime $DAYS_AGO -printf %f -printf "\n" | sort -r > $FILES
The above command gives different results when run on a cron job. When run manually the result is accurate. (2 Replies)
Hi Gurus,
I have a test unix server in which currently some unix cronjob are running.
I have written two script one is a shell script in which env variable are there (in that i am exporting those variables).
I have also written a perl script .
when i am running at the shell manually like... (5 Replies)
Hi all,
I wrote a script as below,
#!/bin/ksh
. /app/home/etc/sudo.profile >/dev/null
java -jar $HOME/abc.jar
The jar file abc.jar is located in the same folder as the script.
When I'm manually running that script the jar file gets executed. However if I set a cron job, it... (5 Replies)
cron process in AIX is there when I do ps -ef |grep cron, but none of cron job is working. It appears that cron process is hanging or having some issues? How do you resolve this? Do I kill the cron process by kill -9 PID? and how to start it?
Please advise. (1 Reply)
Discussion started by: Daniel Gate
1 Replies
LEARN ABOUT XFREE86
cron
cron(1M) System Administration Commands cron(1M)NAME
cron - clock daemon
SYNOPSIS
/usr/sbin/cron
DESCRIPTION
cron starts a process that executes commands at specified dates and times.
You can specify regularly scheduled commands to cron according to instructions found in crontab files in the directory
/var/spool/cron/crontabs. Users can submit their own crontab file using the crontab(1) command. Commands which are to be executed only once
can be submitted using the at(1) command.
cron only examines crontab or at command files during its own process initialization phase and when the crontab or at command is run. This
reduces the overhead of checking for new or changed files at regularly scheduled intervals.
As cron never exits, it should be executed only once. This is done routinely by way of the svc:/system/cron:default service. The file
/etc/cron.d/FIFO file is used as a lock file to prevent the execution of more than one instance of cron.
cron captures the output of the job's stdout and stderr streams, and, if it is not empty, mails the output to the user. If the job does not
produce output, no mail is sent to the user. An exception is if the job is an at(1) job and the -m option was specified when the job was
submitted.
cron and at jobs are not executed if your account is locked. Jobs and processses execute. The shadow(4) file defines which accounts are not
locked and will have their jobs and processes executed.
Setting cron Jobs Across Timezones
The timezone of the cron daemon sets the system-wide timezone for cron entries. This, in turn, is by set by default system-wide using
/etc/default/init.
If some form of daylight savings or summer/winter time is in effect, then jobs scheduled during the switchover period could be executed
once, twice, or not at all.
Setting cron Defaults
To keep a log of all actions taken by cron, you must specify CRONLOG=YES in the /etc/default/cron file. If you specify CRONLOG=NO, no log-
ging is done. Keeping the log is a user configurable option since cron usually creates huge log files.
You can specify the PATH for user cron jobs by using PATH= in /etc/default/cron. You can set the PATH for root cron jobs using SUPATH= in
/etc/default/cron. Carefully consider the security implications of setting PATH and SUPATH.
Example /etc/default/cron file:
CRONLOG=YES
PATH=/usr/bin:/usr/ucb:
This example enables logging and sets the default PATH used by non-root jobs to /usr/bin:/usr/ucb:. Root jobs continue to use
/usr/sbin:/usr/bin.
The cron log file is periodically rotated by logadm(1M).
FILES
/etc/cron.d Main cron directory
/etc/cron.d/FIFO Lock file
/etc/default/cron cron default settings file
/var/cron/log cron history information
/var/spool/cron Spool area
/etc/cron.d/queuedefs Queue description file for at, batch, and cron
/etc/logadm.conf Configuration file for logadm
ATTRIBUTES
See attributes(5) for descriptions of the following attributes:
+-----------------------------+-----------------------------+
| ATTRIBUTE TYPE | ATTRIBUTE VALUE |
+-----------------------------+-----------------------------+
|Availability |SUNWcsu |
+-----------------------------+-----------------------------+
SEE ALSO svcs(1), at(1), crontab(1), sh(1), logadm(1M), svcadm(1M), queuedefs(4), shadow(4), attributes(5), smf(5)NOTES
The cron service is managed by the service management facility, smf(5), under the service identifier:
svc:/system/cron:default
Administrative actions on this service, such as enabling, disabling, or requesting restart, can be performed using svcadm(1M). The ser-
vice's status can be queried using the svcs(1) command.
DIAGNOSTICS
A history of all actions taken by cron is stored in /var/cron/log and possibly in /var/cron/olog.
SunOS 5.10 5 Aug 2004 cron(1M)