I am trying to have the files from /user/directory copy every hour to /backup/user/directory. It would seem that cron or crontab is what I need to use. Looking at previous posts and other documentation only shows how much I don't know. When I type crontab -e I get a blank file I can type into, seemingly using vi as the editor. I have no problem with that but when I type cron -l, I get my text after a message about "Do Not Edit this File". What I am reading just makes no sense, I am not understanding even the most fundamental aspects of cron or crontab. Where I can get the most basic of basic instructions to try to understand this function?
I am using Linux 64 bit Redhat Linux. I am trying to setup simple crontab as follow...1. Edited crontab file using crontab -e2. Listed the file once to verify it using crontab -l. This will display as.. 18 5 * * 2-3 ksh $HOME/testScript.sh > $HOME/testscript.out3. Logged in a root and restarted cron deamon using "/etc/init.d/crond restart"As per my understanding now my testScript should start running at 5:18 am Thuesday
I am trying to setup a cron job using crontab entry like this 6,16,26,36,46,56 * * * * /usr/bin/fetchmail -k>/dev/null 2>&1 But nothing is happening This is the first time I have attempted using cron as I have settup mutt for my email which is now working great but I would like to have the mail collected every 10 mins The file is saved as mailcron in my /home folder. When i run crontab -l its listed ok but no mail is appearing in mutt.
I am trying to run rsnapshot from cron via root's crontab file (crontab -e). If I run rsnapshot from the command line with sudo it works perfectly, however, if I run it from cron:
Code: * * * * * /usr/bin/rsnapshot hourly >/tmp/crontab.out 2>/tmp/crontab.err This does not work. The crontab.err file shows:
I just tried adding the same repository to my desktop pc as well separate install separate machine same error, while checking software sources in gnome nothing seems out of the ordinary. My desktop was updated today via the update manager.
Let's say I have a init script, etc/init.d/strangeScript, that starts like this:
Code: #! /bin/sh ### BEGIN INIT INFO # Provides: strangeScript # Required-Start: $remote_fs $syslog # Required-Stop: $remote_fs $syslog
[Code].....
Why is it not only complaining my runlevels do not match the defaults, which they do, but also is refusing to create the links to the proper runlevels? This is 10.04LTS if that matters.
is it possible disabling a crontab job without deleting the crontab description entry (by crontab -e)?I could also accept to change the entry itself. Now it's:0 0 * * 0-6 /home/me/cron/script.csh
I have two servers. One of them has a svn server running and another hosting projects.
I have a daily cronjob updating the projects -- ie running svn update, rebuild etc.
Now, my cronjob on the remote server works. However, a similar cronjob running on the local server for local projects (ie the same server as svn) is instead displaying a "svn: not working copy".
I double checked the paths, permissions and user info and if the script is launched manually, it works fine. Deploying the same thing remotely works.
I even tried using file:/// (suggested here http://www.hightekhosting.com.au/myaccount/knowledgebase/90/Using-SubversionorSVN-on-cPanel-Servers.html) but still nothing.
I'm having a file with repeated particular text lines. So I need to view the file content ignoring these lines. Is there anyway I can achieve this using VI
rdiff-backup keeps recreating a symlink: /backup/ext -> /mnt/vg1/vol1, which is kind of missing the point, because then it doesn't actually back up the files in /mnt/vg1/vol1/installs, etc.
/media/A and /media/B should be identical, but I want to confirm before deleting one.
Duplicate file finders don't work, because they'll find two copies of the same file within B, for instance. I only want to confirm that every file in one is identical to the other.
diff -qr /media/A/ /media/B/ seems to work, but the output is cluttered with garbage like
diff: /media/A//etc/alternatives/ControlPanel: No such file or directory
and
File /media/A//dev/tty8 is a character special file while file /media/B//dev/tty8 is a character special file
I can suppress the former with 2> /dev/null, but I don't know about the latter.
rsync -avn /media/A/ /media/B/ also produces a bunch of clutter, like "skipping non-regular file".
How can I compare the two trees and just make sure that all the real files exist in both and are identical?
I have a question about using crontab with /etc/crontab...
I had a cron job that I needed to run as root. At the time I thought that sticking it in /etc/crontab would be a good idea. However, I used the crontab command to edit /etc/crontab, which I guess is not standard procedure? Specifically, I configured /etc/crontab as my local user's crontab (i.e. sudo crontab /etc/crontab) then added my cron job as I would a local user crontab (i.e. sudo crontab -e).
Originally, my cron job looked like this:
30 * * * * root /my/batch/script &> /dev/null
After adding the new cron job I started seeing errors. Something to the effect of "can't find command root" or something similar. So I removed the 'root' user definition from the cron job and the job started running fine. However, because this is /etc/crontab, there are other system related cron jobs that have been defined to run under the root account (e.g. "17 * * * * root cd / && run-parts --report /etc/cron.hourly" runs as root, etc.). So these pre-existing system cron jobs, which up until now have been running smoothly, are now generating "can't find command root" errors. But I think that the system cron jobs _are_ successfully being run someplace because logrotate seems to be working.
So what I _think_ is happening is that /etc/crontab is being run twice: once as the system crontab, and once as my sudoed local user's crontab. When I run crontab -l I see nothing, but when I run sudo crontab -l I can see the contents of /etc/crontab. I am reluctant to delete my sudoed local user's crontab, because then in the process I would be deleting the system crontab, and I do not know how I should restore the system crontab's contents. (I am still not sure as to the most appropriate way to edit the system crontab).
How can I get out of this mess? I want /etc/crontab to go back to the way it was before--running _once_ as the system crontab. As for my new cron job, I'm willing to reconfigure it anywhere so long as I am still able to run it as root. Any ideas? (I am using Ubuntu 8.04 Server LTE)
I have installed an application manager(monitoring application) on my linux server. Now, i need to have backup schedule for my application. The application itself has executive file to backup database.But when i put this file in my crontab to schedule the backup program it wont run!50 09 * * * root /opt/ME/AppManager9/bin/BackupMysqlDB.sh
I have added some executable scripts to /etc/cron.daily but don't get the stdout/stderr output from them as mail (or anywhere else I have found). At least one of them is running (because I can see that it has added a file to the disk).
The peculiar thing is that I do get the output from /etc/cron.daily/0logwatch (part of the logwatch package) as an email each day.
The MAILTO line in /etc/crontab is "MAILTO=root" (unchanged from default). Same for /etc/anacrontab.
I do have an alias at the end of /etc/aliases which redirects root's mail to my own account, but this alias works fine for mail I send manually. (It also appears to work fine for the output from the file /etc/cron.daily/0logwatch.)
I put in my cron entries to run my backup script which rsyncs my data to my 2nd drive, however on a hunch I checked my backup drive which mounts automatically via fstab and I realize it had not ran in a while. I checked cron and there were no entries for it. I got to wondering if I should ever be worried about a cron update coming down and over-writing my existing cron file with the backup entries in it to run.
If I uncheck and recheck "Enable Networking" in the Network Manager Applet 0.7.996 I would expect the wired network to disconnect (which it does) and reconnect (which it does NOT). So I tried sudo ifdown eth0 and got
Quote:
Ignoring unknown interface eth0=eth0.
ifconfig tells me
Quote:
eth0 Link encap:Ethernet HWaddr 00:25:64:e8:18:2c inet addr:192.168.0.112 Bcast:192.168.0.255 Mask:255.255.255.0 inet6 addr: fe80::225:64ff:fee8:182c/64 Scope:Link UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
[code]....
so I am at a loss. How do I stop and restart the network interface short of rebooting the machine?
If I configure a crontab like below.12 3 12 4 4 cat /etc/passwd I know that the cat command will get executed at the configured time. But where will the output of that command go?If it is something like below, then out put will be routed to /tmp/file1.12 3 12 4 4 cat /etc/passwd > /tmp/file1
I know crontab -e sets a cronjob in /var/spool/cron but how do I set a cronjob to run from /etc/crontab? Is there a command used for this or would I have to manually edit a certain file?
