General :: Crontab Does Not Run All Lines Of A Script, But Manually It Works Perfect?
May 23, 2011
I use crontab to execute a bash script every minute and the output is redirected to a log file.In that bash script there is a screen command to start a screen session.When I execute the script manually it works perfect, but with crontab, the screen command is not executed, but the echo's are. Because they are written in the log file...Here's my script:Script removed for violation of LQ Ruleso the script runs perfect when I do it manually, but not with cron...Here's my crontab (sudo crontab -e)
# m h dom mon dow command
*/1 * * * * sudo /home/laurent/Games/Cod4/StartCod4.sh | egrep 'running|started' >> /home/laurent/Games/Cod4/Serverlog.log
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May 26, 2010
One of my script don't execute itself using crontab although it works manually.
=> /var/log/cron
/var/log/cron show these 2 lignes at sheduled time
May 26 09:59:01 COMPUTER crond[26439]: (root) CMD (/usr/local/bin/script)
[code]....
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May 9, 2011
I have written a simple backup script, and added it to CronTab, but it doesnt execute at all. Here is my script: [URL]...And my CronTab entry: 0 */2 * * * root /home/server/Scripts/backup.sh
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Mar 11, 2011
I want to start out by saying that I've search for this problem but none of those solutions where of any relevance to me/didn't work.I have this bash script I want to run in crontab that will check my /dev/md0 for failed devices (I dont want sendmail or postfix for this). The script won't run if not run manually. Does anyone see a problem with the script or crontab? Is it even possible?
Here's /etc/crontab:
0 12 * * * /bin/sh /checkRAID.sh
I have also tried
[code]....
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Sep 20, 2010
Silly question here. My crontab looks like this:
Quote:
0 22 * * * /usr/sbin/logrotate /var/log/VRTSralus/VRTSralus.logrotate
#0-59/10 * * * * /root/memmon.sh >> /var/log/memmon.txt
0 8 * * 1 /root/SHC.sh
#0 21 * * * /root/scripts/ralus_restart.sh > /dev/null 2>&1
As you can see two of the lines are commented out. However, both commented out commands are still running. I get emails stating that the RALUS agent restarted (another mystery since it's supposed to go to dev null according to the line above), and I can see that the memmon script is also running daily. Am I missing a step? Some other place I should be looking? Commenting out lines in your crontab is pretty much a no-brainer, so I appear to have less than no brain as this is a mystery to me.
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Oct 14, 2010
How to break strings of command into multi-lines in crontab? e.g.
Code:
# the following is a very long a gruesome command to be run at 09:59 Monday to Friday.
59 09 * * 1-5 source $HOME/some-definitions; sh /usr/local/my/long/name/application/bin/hello $(date +\%Y\%m\%d) >>/var/log/my/long/name/application/log/hello.log
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Feb 8, 2010
Recently I installed Renoise demo and followed their install instructions from the Renoise 2.1 quickstart guide. It said if you get any errors to do the following:
Configuring Realtime Threads:
If you get a warning message when you start Renoise, read this section. To allow Renoise to create realtime threads, which are required for low latencies with ALSA or JACK, you have to
edit the /etc/security/limits.conf file. A realtime kernel does NOT help here, it does not set the required options automatically! To enable RT thread creation via PAM open the /etc/security/limits.conf file in a text editor as root (or sudo). Then somewhere near the end of the file add:
YOURUSERNAME - rtprio 99
YOURUSERNAME - nice -10
Replace YOURUSERNAME with your username. You can discover this with the 'whoami' command.
Alternatively you could also create a group named "Audio", add your user to that group, and use '@Audio'
instead of 'YOURUSERNAME'.
Save the file. Log Out. Login. At this point it should be working. To verify that it works, launch Renoise, select ALSA and make sure the 'Realtime threads' option is on. You will get a friendly warning like the one above. If RT creation failed. Try again.
Jack Configuration
If you don't have "Jack Control (JACK Audio Connection Kit)", we recommend that you install it.
Jack Control allows easy Audio/MIDI routing with an intuitive GUI. On Ubuntu:
$ sudo apt-get install jackd qjackctl
Now you can start it from [Applications] -> [Audio] -> [Jack Control].
Click the "Setup" button, and set following values:
Change the "Priority" value to 89. (If you use realtime kernel, also add check mark beside "Realtime")
Change the "Periods/buffer" value to 3 or more.
In addition, please configure latency and other settings according to the needs of your system. Now I don't have sound where and when I used to, for example: songbird no longer plays sound tho it plays the track and no sound in web browsers aswell, like ..... plays but no sound. It has to be something simple because audio for everything was fine until editing that one file and installing that audio jack program.
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Apr 27, 2010
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
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Oct 8, 2010
I have a PGP script that for whatever reason if I let linux's cron run it automatically, it sends out the final email with attachment with a blank file. If I come in and run in manually everything works fine and the file is populated in the file. So the only real difference is that i'm running it manually through cron, rather than letting cron run it at a set time.Below is a sumary of my script.
Code:
#! /bin/bash
#PGP Decryption Bash Script
[code]...
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Feb 8, 2010
Yes I have tried exporting my paths and variables aab still will not run my script. 'm sure I am doing something wrong.I have a shell script which runs a jar file. This is not working correctly. After reading around I have read this is commonly due to incorrect paths due to cron running via it's own shell instance and therefore does not have the same preferences setup as my profile does.here is what my script looks like today after several modifications:
Code:
#!/bin/bash --
. /root/.bash_profile
[code]...
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Jul 16, 2010
I want to write the date & time and a text string to a file from crontab.The following line works fine in the CL:echo $(/bin/date +"%F %T")" Some text" >> /home/me/foo.txtI installed in crontab and no text appears in the file that it is redirected to.The crontab entry looks like:* * * * * echo $(/bin/date +"%F %T")" Some text" >> /home/me/foo.txtTried a version to just write to stdout....* * * * * echo $(/bin/date +"%F %T")" Some text"No date, time or text appears at the command line
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Feb 19, 2011
Having an odd problem running a mysqldump via crontab. I have the script running on other servers and they work fine, so not sure how to actually troubleshoot, but the script looks like the following;
If I run it as a cronjob as root, it finishes in a second and a 20k file is there. If I run it from the command line as root it does the backup (takes a few minutes) but does complete the backup and can be unzipped and read successfully.
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Jun 23, 2011
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
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Jul 3, 2010
As root, I use crontab to run mirrordir to backup directories. Everything gets copied over properly, but owner information isn't preserved and root is the owner of all the backed up files. I can deal with that, but crontab reports tons and tons of chown/chgrp errors for mirrordir every time I do back ups--which is every day--and the multiple emails to root of thousands of chown/chgrp errors is very annoying. The error is "Operation not permitted," but that doesn't make sense to me because the job runs as root (right?) and clearly the job is permitted to create the backup files, so why would it fail to chown and chgrp?
I've had the exact same setup on another server for years, and crontab has always run mirrordir without error. Any suggestions how to clear the errors on my new server?
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May 20, 2010
When in XUBUNTU i click the picture of the 2 pcs indicating a network and choose "connect to hidden wireless network", put in the information.All this works nicely. When i reboot it's saved my config so i choose it to connect again but the "connect" button is disabled so i have to config it all over again and then it works. How do i get it to just connect to the network on login?
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Dec 13, 2008
I know this has been covered in many threads before, but I'm stuck not finding my exact situation or an answer. I'm a newbie using a Debian Linux machine as the client and Windows XP machine as the server. I have successfully mounted the XP Network drive on the Linux machine using commands from the root terminal:
mount -t smbfs -o username="Windows Username",password=windowspassword //XPcomputername/folder /mountpoint/
However when I put the command in the ect/fstab file as suggested in several posts, I don't get any result on boot up. I.e. I can't get the network drive to mount on start up, I always have to manually mount it from the root terminal.
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Dec 28, 2010
Just installed the new google earth. I had some errors trying to get it to start but I got that fixed. But when it opens all works but the text is really weird and just in strait lines!! What is this? And how can I fix it?If the image does not show up just go to
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Aug 4, 2010
How can i be perfect in Linux networking configuration?
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Apr 6, 2011
Anyone who has been in the world of Linux for more than a minute knows there is a good deal of choice when it comes to package manager. What is your package manager of choice and why? Why do you prefer to use RPM/dpkg/apt-get/yum/pacman/emerge/<insert random package manager here> over others out there?
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Aug 3, 2010
I had some trouble with the netinst CD and I had to install lenny with the 6DVDs instead. My internet connection only works after I edit the interfaces and resolv.conf files manually. So my question is: can I do that from the netinst CD before it actually needs the connection to install everything? (otherwise I'll just need to use the DVDs.
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Mar 4, 2011
For those of you who have no idea, the original plan for Ubuntu 11.04 was to have only one beta release, but that has changed and there is now a Beta 1 and Beta 2. The Beta 1 has been scheduled for the time the original Beta was scheduled for, and Beta 2 has been scheduled for 20110414. For those of you who have seen my profile, that falls on the day I turn 18! (Just wanted to add my 2� here). However, I plan to be humble about it. Guys (and girls), what would you do if a Linux distro version (alpha, beta, or final) was released on your birthday?
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Jan 26, 2010
I've come across an unusual requirement for a service in my Ubuntu system.Simply put, I need to find a way to search for all instances of a term in a file, delete lines containing containing that term, and delete four lines below each instance of that term. ither that, or copy the entirety of a file to a new file and skip over all lines containing the term plus four below it.This sounds kinda weird, I know. Without going too far into detail, I either have to change the logfile format for a server I'm running which is a huge pain in the butt, or I can just run a script to edit an HTML report generated from said logs. (Said report is really just for managers to peruse, and I like my log format, so I'm pursuing option 2.)
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Feb 25, 2010
To start, I'm writing a script to check a file's date via FTP. Here's the portion that I'm having problems with:
Code:
function checkRemote
{
[code]...
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May 29, 2011
What is the difference between the crontab located in /etc/crontab and the crontab that can be edited using crontab -e?
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Aug 26, 2010
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)
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Apr 9, 2011
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
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Apr 22, 2011
I have been experiencing a problem where the screen loads and after initial first few lines breaks up into multiple repetitions of lines. Reloading helps but has to be repeated when pageing down. Mail is no problem; it is supplied by my network provider. OS is openSUSE 11.2 which I update when advised. Below is a sample from the error console:
[Code]...
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May 31, 2011
I've just installed Kubuntu 11.04, switched on wobbly windows effect. It runs very smooth on my Nvidia GeForce 7600 GS with dual screen twinview turned on. However, I get these lines when I drag/move the window upwards - see screenshot:
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Nov 24, 2009
How do you remove parts of strings using python? Such as, if I have something like:
Code:
erme1 sdifskenklsd
erme2 sdfjksliel
[code]....
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Oct 26, 2009
I have this massive table file with some data in it and I want to replace some lines that are wrong with the correct ones that are in another table file of the same format. The wrong lines are not all together in a block but randomly distributed so I need to make a loop checking if the line is in the other file and if it is, replace it. I want to try and do it with sed or awk but I don't really know how to....
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