It will exit by itself once done, but you probably want an 'exit 0' at the end in case any of the cp commands couldn't copy.
Cron also has a useful feature where any output from the command gets emailed to you. Generally you want no output for successful commands, but if the command fails, you want cron to tell you about that. So:
Hi all,
Needs your help in scheduling a cron job for the below mentioned requirement. Just let me know if anybody has a similar job running as mentioned below:
Month end reports - Report of all items created in a parent table that were created during the week.
Presently this report runs... (3 Replies)
Although there are many threads on this forum regarding cron, none have specifically answered my question. So hopefully someone can shed some light on what I'm doing wrong..
I have a perl script that I want to run in a cron job. Since I've read that cron doesn't have any environments set, I... (3 Replies)
Hi, new to this forum and not sure if this is the right place to post. I'm new to cron jobs and scripts, and I need some help with a script to be used with a cron job. I already have a bot set up at a certain website address and need a script that the cron job will load every day that tells it to... (1 Reply)
Greetings,
I am creating a ksh script to automate the installation of a utility on many servers.
As part of this install, I want to check for a job in root's crontab.
If the job exists, I need to comment it out.
I know I will need to copy off the crontab then read it back in, but I am... (4 Replies)
Hey Guys,
i was trying out a shell script which has to remove a file for every 90 mins. this is the code i came up with .
$ crontab -e file1
file1 contains
30 1 * * * * rm -r /folder1/folder2/somefile.txt
Now i need the cron to run for every 90 mins. the problem with this is... (8 Replies)
Hi All,
I beginner in unix, i have no idea how to set the script file using cron job every 5 second. I also want to execute automatically the output to text file.This is my script name countsys.sh and my textfile abc.txt. (6 Replies)
Hello,
How do I schedule a cron job for a phython script to run every hour?
Also, in case in future I decide to edit/cancel the job how should i do it?
Does it matter where my phython script is located? Also, I have am using mailx utility in my script to send me an email and dont want... (7 Replies)
Hi guys,
How can I specify the start and end time of a cron job. And my start time and end time are specified by minutes. For example, I want to set up a cron runs every 3 minutes from 18:40 to midnight. How can i do this please? Many thanks
Best regards,
Clu (4 Replies)
Hi Team,
When i am running the below query manually it is giving me the right output
i.e.
export PATH=/usr/sbin:/usr/bin:/sbin:/bin:$PATH
ADMIN=abc@abc.com
CPU_HIGH=`sar|awk '{print $9}'|sort -n|head -5|sed -n 5p`
CPU_MAX=`echo "scale=3; 100-$CPU_HIGH" | bc`
CPU_LOW=`sar|awk '{print... (13 Replies)
I would like to run a script, as root, which will eventually set up cron job for a non privilege user. Please advice. (9 Replies)
Discussion started by: atanubanerji
9 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