09-29-2008
Franklin52, you are right.. Forgot the E character...
My bad..
10 More Discussions You Might Find Interesting
1. UNIX for Advanced & Expert Users
What is the best way to modify the crontab file??
Edit the file and then use crontab 'filename' ???
I do not know how to use pico editor - so I cannot modify it this way, Any help is appreciated. (3 Replies)
Discussion started by: frustrated1
3 Replies
2. UNIX for Dummies Questions & Answers
I saw a post on here a while back describing how to edit a crontab file when I'm not able to edit it via crontab -e.
Currently, if I try to do a crontab -e, it just comes back with:
# crontab -e
7987
<and then it just hangs there FOREVER>
If I do a crontab -l, it shows me all of the... (1 Reply)
Discussion started by: FredSmith
1 Replies
3. Shell Programming and Scripting
hi
i need to change crontab settings as
minute,hour,day of month,month year,day of week
certain times. for that i need to go as crontab -e. i want to avoid that as its creating many problems in mysystem.
so here i m planning/trying to write a script that will update the settings in crontab... (8 Replies)
Discussion started by: d_swapneel14
8 Replies
4. UNIX for Dummies Questions & Answers
Hi
I am new to Unix and would like some assistance.
I need to edit the crontab file so that a script is set to run at 3:00 am each day.
When I telnet to the sun server and type crontab -e a black screen appears and I am unable to make any changes.
Could you advice on what is needed to... (11 Replies)
Discussion started by: juliet
11 Replies
5. Solaris
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 $crontab -e
I can't do that
Can you help me...?
Thanks for solution
regards,
srilinux (25 Replies)
Discussion started by: srilinux
25 Replies
6. Shell Programming and Scripting
Hi All,
There are some cron jobs scheduled already by someone, now I have to make some changes to the schedule timings. Please advise me.
thanks,
Raju (2 Replies)
Discussion started by: rajus19
2 Replies
7. Shell Programming and Scripting
Hi,
Can some one tell me if we can configure the jobs in crontab using a shell script.
I know it can be done easily by using "crontab -e", but i just want to know whether we can add a job into the crontab using a shell script.
If it can be done, plz suggest the procedure to do it.
If it... (6 Replies)
Discussion started by: rudrarajumk
6 Replies
8. UNIX for Dummies Questions & Answers
Hi Guys,
I need to edit the crontab on one of my unix systems. When I execute crontab -e, nothing happens, then I get an error '666' and can't type anything else at the cli.
I tried resizing the window, but still got the same error. I'm using the run user and I've checked the permissions on... (0 Replies)
Discussion started by: bbbngowc
0 Replies
9. UNIX for Dummies Questions & Answers
Hi,
I have a solaris 10 box. And I want to schedule a cronjob.But it gives the following error
bash-3.2$ crontab -l
crontab: can't open your crontab file.
bash-3.2$ EDITOR=vi
bash-3.2$ export EDITOR
bash-3.2$ crontab -e
crontab: can't open your crontab file.
I checked in... (12 Replies)
Discussion started by: Rossdba
12 Replies
10. Shell Programming and Scripting
Hi,
I m setting up my crontab for the very first time. I m a non-root user and this is linux
$ export EDITOR=vi
$ crontab -e
no crontab for user1 - using an empty one
crontab: installing new crontab
"/tmp/crontab.uW0JNx":1: bad command
errors in crontab file, can't install.
Do you want... (3 Replies)
Discussion started by: mohtashims
3 Replies
LEARN ABOUT CENTOS
crontabs
CRONTABS(4) Crontabs users' Manual CRONTABS(4)
NAME
crontabs - configuration and scripts for running periodical jobs
SYNOPSIS
run-parts [--list|--test]<directory>
DESCRIPTION
Crontabs is a historical name for the run-parts script and the system crontab. The run-parts script runs all executables in the specified
directory. Run-parts runs all executables in the specified directory. The execution of files can be allowed or denied by creating file
jobs.allow or jobs.deny which worked similar as other allow/deny config files. The file must be created in the specified directory.
--list print names of all files (not limited to executables), but don't run them. This option can't be used with test option.
--test print names of files, which would be run.
Randomization of jobs can be configured in the /etc/sysconfig/run-parts file. To enable randomization of jobs, set the RANDOMIZE
parameter to 1 and set the RANDOM parameter to an integer which determines a random seed. Additionally, you may configure the RAN-
DOMTIME parameter (again, by specifying an integer) to provide an additional level of randomization. Jobs are not randomized when
the RANDOM and RANDOMTIME parameters are set to 0. Values in these two parameters must be set to 1 or larger to provide a good
enough randomization.
Randomization of cron jobs can be useful for shared networks, where multiple cron jobs executed at once can cause spikes in traffic,
especially during daily jobs. With randomized jobs, the workload is evenly distributed throughout the day.
EXAMPLE OF CONFIGURATION FILE
RANDOMIZE=1
RANDOM=4
RANDOMTIME=8
Historically the crontab file contained configuration which called run-parts on files in cron.{daily,weekly,monthly} directories. These
jobs are now run indirectly through anacron to prevent conflicts between cron and anacron. That means the anacron package has to be
installed if the jobs in these directories should be running. Refer to the anacron(8) how to limit the time of day of the job execution.
EXAMPLE
/etc/cron.daily/jobs.deny could contain for example 0logwatch which forbid execution of this script.
SEE ALSO
anacron(8), crontab(5)
Marcela Malaova 2012-08-29 CRONTABS(4)