I noticed that I do not have the crond daemon in my AIX box. I need to create a backup script to run nightly. Where do I find this daemon?
Thanks (1 Reply)
Hi,
We have dual processor dell machine loaded with redhat linux 7.2. It was working fine without any problem but recently power went off so suddenly system switched off. From then onwards system is running very slow. My suspect is on processor. How to check both the processors running properly or... (8 Replies)
Hi experts,
need your helpo.
after editing the crontab while saving the file it says-
"/tmp/crontabRlaauT" 1 line, 77 characters
cron may not be running - call your system administrator
And i checked after certain time. script in cron is not running. I got a mail in user saying... (1 Reply)
Dear Friends,
I am working on IBM AIX. I have written one script and kept in the crontab as to run daily at 11:38 AM. and the output of the script to be appended to the file generated with the month name. but my file deleting daily and the new file is creating with the output of the shell... (2 Replies)
please tell pre-requisite steps to activate cron. i activated the cron but it not executing the script which i set in crontab entry.through root user i passed the service crond start it get start.but when i go to etc/init.d and passed crond stop command.it gets crond: can't lock /var/run/crond.pid,... (2 Replies)
Hi,
I have a script (.sh file) which has been created through my login. This script executes a jar file.
Java is installed through my login and the folder has been given full permission for access.
When this script is added by root in crontab, it does not get executed.
Could you please... (1 Reply)
Hi everyone,
I am fairly new to shell scripting. I want to read in numbers from a file (one number per line). This works perfectly fine
while read CurrentLine
do
echo $CurrentLine
done < myfile
and yields the correct output:
272
745
123
If I however run a ffmpeg... (2 Replies)
I am trying to take backup of server. while running manually, script working successfully.
while running in crontab its showing
"/bin/sh: /webMethod6/CustomMonitoring/scripts/backupWebMethodsCodeBase.sh: No such file or directory"
code forbackupWebMethodsCodeBase.sh
#!/bin/ksh
#Purpose... (8 Replies)
Hi!
We are on AIX 6.1 TL6
I am an Admin for a Content Management application that is hosted on an AIX machine and i am supposed to come up with a cronjob that runs every monday at 03:00 am.
The current schedule of that cron job is :
3 * * 1,3,5 /path/of/script.sh
But i do not know... (5 Replies)
Hi guys,
I really need your help with this.
My network interface eth0 is up but not running. I checked udev rules and ifcfg-eth0 files to make sure the mac address are the same.
It just would not come up. Please please I will really appreciate the help here.
Thank you in advance. (3 Replies)
Discussion started by: cjashu
3 Replies
LEARN ABOUT SUSE
cron
CRON(8) System Manager's Manual CRON(8)NAME
cron - daemon to execute scheduled commands (ISC Cron V4.1)
SYNOPSIS
cron [-l load_avg] [-n]
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 '&'. The -n option
changes this default behavior causing it to run in the foreground. This can be useful when starting it out of init.
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.
Daylight Saving Time and other time changes
Local time changes of less than three hours, such as those caused by the start or end of Daylight Saving Time, are handled specially. This
only applies to jobs that run at a specific time and jobs that are run with a granularity greater than one hour. Jobs that run more fre-
quently are scheduled normally.
If time has moved forward, those jobs that would have run in the interval that has been skipped will be run immediately. Conversely, if
time has moved backward, care is taken to avoid running jobs twice.
Time changes of more than 3 hours are considered to be corrections to the clock or timezone, and the new time is used immediately.
PAM Access Control
On SUSE LINUX systems, crond now supports access control with PAM - see pam(8). A PAM configuration file for crond is installed in
/etc/pam.d/crond . crond loads the PAM environment from the pam_env module, but these can be overriden by settings in the crontab file.
SIGNALS
On receipt of a SIGHUP, the cron daemon will close and reopen its log file. This is useful in scripts which rotate and age log files.
Naturally this is not relevant if cron was built to use syslog(3).
CAVEATS
In this version of cron, /etc/crontab must not be writable by any user other than root. No crontab files may be links, or linked to by any
other file. No crontab files may be executable, or be writable by any user other than their owner.
SEE ALSO crontab(1), crontab(5), pam(8)AUTHOR
Paul Vixie <vixie@isc.org>
4th Berkeley Distribution 10 January 1996" CRON(8)