I am trying to get the number of cpus on a farm of linux boxes (about 100 of them) by 'sshing' to each of them and checking their /proc/cpuinfo file.
So I have a local script localscript.sh on each of those 100 machines which retrieves the number of cpus in it by using its /proc/cpuinfo file.... (1 Reply)
Does anyone know if this is possible?
I want to give some users access to root's crontab but only with a read privilege.
Is this possible to do or can only root or people with full root sudo view root's cron? (4 Replies)
Good morning everybody. I have just receiedv a complaint from our DBA saying that if he create a scripts to run some Oracle performance scripts using crontab and the scheduling part is ok but the job is failed when I checked on /var/adm/cron/log.
I have tried his scripts using Oracle id directly... (4 Replies)
I am getting the following error in the cron log:
! bad user (root) Wed Sep 22 14:30:00 2010
< root 8989 c Wed Sep 22 14:30:00 2010 rc=1
What does this mean? (5 Replies)
I've been bashing my head on the desk for 2 days trying to get this to work, but I've had no luck. I'll try to be as clear as possible in my explanation without dragging out the details. I'm trying to set up a cron job for user "john" which runs a script. This script initiates an ssh connection to... (5 Replies)
Hi All,
Ref: "build crontab from a text file" in same forum. (I am not allowed to post URL's in the first post)
We are reorganizing our UNIX Crontab file by first making changes in a word pad text file. The intent is to then copy it back to Crontab. Will this work? Copy and Paste does not... (6 Replies)
I've been through many threads before i decide to create a separate thread.
I can't really find the solution to my (simple) problem.
Here's what I'm trying to achieve:
As "canar" user I want to run a command, let's say "/opt/ocaml/bin/ocaml" as "duck" user.
The only to achieve this is to... (1 Reply)
Hi everyone,
I got error which is "!bad user (root)" in crontab...
I tried changing password,
I checked etc/cron/cron.allow and cron.deny,
And also I checked the permissions of my files,
its(my crontab script) still not working....
Please help... (12 Replies)
I am trying a cron on root user to backup to tape using TAR command
here is the cron entry
11 08 * * 6 /erdhot1cron 2>&1 >> /test3/scripts/dba/erdhot1cron.log
here is script inside - edhot1cron
#!/bin/bash
vsysdt=`date +%d%m%y`
date
tar -cvf /dev/st0... (4 Replies)
Hi,
i have question about cron. can we have user based cron file under /var/spool/cron or we should have only root file which can only be accessed by root user or admin and he should only be doing the task of scheduling.
PKS (8 Replies)
Discussion started by: praveenkumar198
8 Replies
LEARN ABOUT CENTOS
anacrontab
ANACRONTAB(5) File Formats ANACRONTAB(5)NAME
/etc/anacrontab - configuration file for Anacron
DESCRIPTION
The /etc/anacrontab configuration file describes the jobs controlled by anacron(8). It can contain three types of lines: job-description
lines, environment assignments, or empty lines.
Job-description lines can have the following format:
period in days delay in minutes job-identifier command
The period in days variable specifies the frequency of execution of a job in days. This variable can be represented by an integer or a
macro (@daily, @weekly, @monthly), where @daily denotes the same value as the integer 1, @weekly the same as 7, and @monthly specifies that
the job is run once a month, independent on the length of the month.
The delay in minutes variable specifies the number of minutes anacron waits, if necessary, before executing a job. This variable is repre-
sented by an integer where 0 means no delay.
The job-identifier variable specifies a unique name of a job which is used in the log files.
The command variable specifies the command to execute. The command can either be a command such as ls /proc >> /tmp/proc or a command to
execute a custom script.
Environment assignment lines can have the following format:
VAR=VALUE
Any spaces around VAR are removed. No spaces around VALUE are allowed (unless you want them to be part of the value). The specified
assignment takes effect from the next line until the end of the file, or to the next assignment of the same variable.
The START_HOURS_RANGE variable defines an interval (in hours) when scheduled jobs can be run. In case this time interval is missed, for
example, due to a power down, then scheduled jobs are not executed that day.
The RANDOM_DELAY variable denotes the maximum number of minutes that will be added to the delay in minutes variable which is specified for
each job. A RANDOM_DELAY set to 12 would therefore add, randomly, between 0 and 12 minutes to the delay in minutes for each job in that
particular anacrontab. When set to 0, no random delay is added.
Empty lines are either blank lines, line containing white spaces only, or lines with white spaces followed by a '#' followed by an arbi-
trary comment.
You can continue a line onto the next line by adding a '' at the end of it.
In case you want to disable Anacron, add the 0anacron cron job (which is a part of crontab(1)) into the /etc/cron.hourly/jobs.deny direc-
tory.
EXAMPLE
This example shows how to set up an Anacron job similar in functionality to /etc/crontab which starts all regular jobs between 6:00 and
8:00 only. A RANDOM_DELAY which can be 30 minutes at the most is specified. Jobs will run serialized in a queue where each job is started
only after the previous one is finished.
# environment variables
SHELL=/bin/sh
PATH=/sbin:/bin:/usr/sbin:/usr/bin
MAILTO=root
RANDOM_DELAY=30
# Anacron jobs will start between 6am and 8am.
START_HOURS_RANGE=6-8
# delay will be 5 minutes + RANDOM_DELAY for cron.daily
1 5 cron.daily nice run-parts /etc/cron.daily
7 0 cron.weekly nice run-parts /etc/cron.weekly
@monthly 0 cron.monthly nice run-parts /etc/cron.monthly
SEE ALSO anacron(8), crontab(1)
The Anacron README file.
AUTHOR
Itai Tzur <itzur@actcom.co.il>
Currently maintained by Pascal Hakim <pasc@(debian.org|redellipse.net)>.
For Fedora, maintained by Marcela Malaova <mmaslano@redhat.com>.
cronie 2012-11-22 ANACRONTAB(5)