Software :: Running A Shell Script From Cron ?

Jul 1, 2010

Im having some difficulties with running a shell script from cron which I am unable to resolve for almost 2 days now.

For testing purposes, im trying this with simple shell script with chmod 777

This script is located at /var
When I type /var/ it runs perfectly and prints asdasdasd
When I type /var/ > /home/log it writes asdasdasd to /home/log - works

The problem occurs whenever I add it as a cron job to var/spool/cron/crontab/root

There is: 11 10 * * * /var/ > /home/log - however, at 10:11 there is no file at /home/log

Cron as a service works, forexample, every day at 4 am it makes this backup sshpass -p xxxx rsync -avz -e ssh root@x.x.10.7:/data/backup/ /home/backups/isp_admin


doesnt makes the folder

Where is the catch?

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General :: Running Shell Scripts With Cron

Sep 24, 2009

I've been having a bit of trouble running a shell script with cron. A friend of mine does a community radio show and the station has a live stream but no podcasts, so I've set up a script to record the stream and encode it as an mp3 while I'm away using mplayer and lame -that's what I'm trying to do anyway.

Here's the script, but it doesn't seem to run- at least, I don't see any of the files it should be outputing, would they be in the cron.weekly directory (where I have the script) or in my home directory?

#This is a script to record 'The Unnamed Show'

#it will record the show from the live stream, then convert the output #to an MP3

#Finally, it will delete any files no longer required HOME=/home/byron/

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Programming :: Running Shell Script Using Cron Job

Jul 8, 2011

I am using Shell Script to run my Java program. I have written a Cron job to invoke Shell Script every day at 7pm. Cron job is running every day at 7pm ,but it is not invoking my shellscript and also I am not getting any error message. I am able to run same shell script from cmd propmt using bash, and also I am able to invoke the same script from mainframes Universal command job. Same ShellScript and Same cronjob is working fine in my Dev server. But in my QA server it is not working.

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Software :: Vixie-Cron Not Running /etc/cron.d/

Feb 9, 2011

Is my vixie-cron broken? i have "0-59 * * * * root /usr/sbin/logrotate /etc/logrotate.conf" but it is not running in /etc/cron.d.


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Programming :: Cron And Fsarchiver Reportedly Running Not Actually Running?

Jun 1, 2010

My root Vixie cron crontab is set to perform a system snapshot via fsarchiver: 0 0 * * * fsarchiver savefs -o -A /backups/p30_root.fsa /dev/sda2 /dev/sda3 The command itself works fine, generating about a 7G snapshot of my Suse server. I then wish to rsync this to a NAS I have located in another building: 0 3 * * * rsync -av -e ssh --delete /backups/ root{at address}:/DataVolume/os_backups/

(yes, I'm rsyncing as root. I absolutely loathe it, but I got thrown into an quasi-SA position with a ridiculous to-do list and no time to do it. I'm having to make things just work and then go back and try to improve them/learn how. I couldn't make it work in a non-root way quick enough, so for now I'm having to cron rsync jobs as root because of all the differing file permissions on this samba/MySql server. I set the NAS to only accepts ssh from the server IP, and we're behind a campus firewall... It's serious trial by fire.) The crontab also has rsync commands for the samba areas, our specialized chemistry software and affiliated MySQL databases............

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Ubuntu :: Scp From Shell Script Using Cron

Oct 12, 2010

I have a script that I would like to run using 'cron'. I want to use 'scp' to transfer files from one machine to another. I have set up the SSH keys on both machines. When I run the script from bash terminal, it works flawlessly. But when I schedule a 'cron' job to run the same script, 'scp' does not transfer the files.

'Return value' is 0 when the script is run from bash directly. But when it runs from 'cron', the 'Return value' is 1. That means, surely, that 'scp' is throwing an error. I don't know which error is being encountered. Could anybody let me know how to make it work?

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Ubuntu :: Shell Script Not Working In Cron

Jan 20, 2010

I'm creating a script all worked fine in the command line. But not work in the cron. Below you could see the script


So far I found when I use corn following part not working, nothing goes to the processedfiles file. ls -l /var/lct/mou2/processed | grep $TODAY | awk '{print " " $8}' > /home/trans/mou/processedfiles ls -l /var/lct/mou2/processed | grep $YESTERDAY | awk '{print " " $8}' >> /home/trans/mou/processedfiles This work perfect in command line. Corn job and command line use by the same user.

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Ubuntu :: Write A Shell Script To Add Job To Cron?

Apr 1, 2011

I write a shell script below to add a job to cron.

touch date.cron
echo '*/3 * * * * /usr/sbin/ntpdate' >date.cron


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Fedora :: How Will More Than One Shell Script Cron - Weekly Work

Nov 23, 2010

What would happen if I place more than one shell script in the cron.weekly directory. would they run at the same time?

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Ubuntu :: Cron Runs Shell Script - But Only First Line Of It?

May 18, 2010

I have a cron job that runs a shell script. But it only runs the first line of that shell script and not the rest of the file. I'm a little stumped as to why. If I run the shell script manually, it runs and executes every single line as it should. I think I must need some additional syntax to make this run correctly?

Here is the crontab ...

root@kchlinux:~/macs# crontab -l
# m h dom mon dow command


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Ubuntu :: Timestamp Format - Shell Versus Cron Job

Jun 16, 2010

Setup: 10.04 server with "bash" as /bin/sh
When I run "ls -l" in a shell I get the following format:

-rw-r----- 1 syslog adm 0 2010-06-13 06:53 /var/log/user.log
Whereas if "ls -l" executes from a cron job the format is:

-rw-r----- 1 syslog adm 0 Jun 13 06:53 /var/log/user.log
Notice the different time format. Now I could fix this by changing the cron job to

ls -l --time-style=+%Y-%m-%d %H:%M ...
but I'm interested in knowing why this behavior occurs. What's different between the cron job and the shell?

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Ubuntu Servers :: Getting My Shell Script To Run On Cron.daily?

Sep 30, 2010

My backup script works fine after some effort to get it where I wanted it. So the script is fine when I run it.

sudo bash

now I have a sym-link to /etc/cron.daily but I do not see any new backups

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Ubuntu :: Creating Shell Script From Source Code For Cron?

Jan 31, 2010

This is regarding the KDE application Basket:

I want to create a shell script that I can run as a cron job to do automated backups. how to proceed. I have the source code and have pulled out the backup source files. Here is the link for the source code. The download is at the bottom of this page. The backup files can be found in the src folder listed as backup.cpp and backup.h [URL]

If someone can do this, I believe it will make a nice addition to the Basket application for all.

Also I am not running Kubuntu I am running Karmic 9.10 64 bit

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Ubuntu :: Script Fails In Cron But Runs Fine In Regular Shell?

Jul 11, 2011

I have an Ubuntu server running Couch Potato, Sick Beard and Sabnzbdplus. Everything "works" pretty well in a sense that CP and SB push the NZB's to Sabnzbdplus, but Sab crashes regularly (haven't found the solution or the cause for this problem, so if you have some advice regarding that, it's welcome).To counter this problem (Sab crashing) I have a script written which checks if Sab is runnning and if it isn't start it:

bart@Pyro:~$ cat


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OpenSUSE :: Cron Job Not Running Because Of Pam?

Oct 22, 2010

I am still an openSUSE noob and have been struggeling to get cron jobs running for the past couple of hours...without having success Hopefully a more experienced user can give me a hand As root I used crontab to setup some cron jobs:

crontab -u api-cebian -e
The resulting cronjob looks like this:


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Ubuntu :: Second Cron Job Isn't Running?

Jan 6, 2010

why my second cron job isn't running? The first one runs fine but the second one does not run at all. If I manually run the script using ./ then it does what it is supposed to but will not run from cron. It should run every weekday at 9:45am, it looks good to me but clearly I am doing something wrong.

# m h dom mon dow command
#This will backup my hosted websites.
0 2 * * * /home/bob/scripts/
#This will run check and upload it's contents to the net.
45 9 * * 1,2,3,4,5 /home/bob/scripts/

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Ubuntu :: Cron Job Is Not Running?

Oct 25, 2010

Cron refuses to work for a newbie.I am trying to setup a cron job to backup a folder in my home directory ('/home/scratch') to a folder ('home/internet_backup') that is mounted (using nfs) to a network folder.the folder ('home/internet_backup') is mounted correctly to the network folder upon system startup, so this part works.

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Ubuntu :: Cron Job Running But Nothing Happens?

Nov 5, 2010

I am making a webpage which is to be automatically generated every minute. I've created a cron job in crontab like this:

0-59 * * * * /usr/bin/php /var/www/site/updatestatistics.php > /dev/null

When I refresh the page 'updatestatistics.php' in my webbrowser it does generate a new page ('statistics.html', which is included in 'statistics.php'). But when I let this cron job do the job, nothing happens. I looked into the log file, it shows this:

(root) CMD (/usr/bin/php /var/www/site/updatestatistics.php > /dev/null)

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Ubuntu :: Cron Not Running On 9.10?

Apr 3, 2011

After saving a few sample scripts in crontab, I discovered that cron is not running properly on my Ubuntu 9.10 (32 bit), after a recent reinstallation. Please note that the files "/var/log/cron" and "/etc/defaults/rc.conf" are empty in my system.

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Server :: Cron Is Not Running ?

Jan 31, 2010

I want to make a cron job for my webserver, only it seems not to work...

I have now the followig to test (every 16th minute of the hour, write test to a file), but it doesn't show up. When I write out the cron, it is done to the file: /tmp/crontab.QXsBIO/crontab . How to make cron work? It must be very easy, but I have real troubles getting it fired up.

My Linux version is debian lenny and the cron file looks like (crontab -e):

(with trailing empty line at the end)

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Server :: Cron Not Running

Jun 15, 2011

Cron on one of my boxes isn't running and I failed to determine why.

Here are what I have found so far:


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CentOS 5 :: Cron Job Is Not Running

Jan 7, 2010

I have created a conjob via ssh by going to crontab -e and adding my scripts like 05 10 * * * /scripts/ file has 755 permissions and if I run the script manualy it works fine. I have checked the cron log and it does not show up as running at all.

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General :: Cron: Run A Process But Only If It Isn't Running?

Feb 10, 2011

Is there a way for me to tell cron to run an app BUT not run it if a process exist already?

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Ubuntu :: Cron Job Not Running - How To Make It Run

Mar 3, 2010

I have a cron job set up to backup my ~/ directory everyday at 10:00. But the cron job is not running. here is my confile that I loaded into crontab...


#backup everyday @ 10:00 AM and 10:30 AM
00 10 * * * /home/dave/bin/
30 10 * * * /home/dave/bin/


the *.sh are executable. I logged out and logged back in since I put the cronfile in crontab. The commands that I use in the *.sh files work fine when I run them manually.

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Ubuntu :: 9.10 - How To Know If Cron Running Program

Mar 25, 2010

I seem to be having a problem with cron. I have a python program that checks a specific directory for pending email scripts written in python.

import os
emaildir = os.environ['HOME']+"/email/"
filelist = os.listdir(emaildir)
for pyfile in filelist:
if pyfile.find(".py") > -1:

This code has been tested and works fine. The problem is that I need cron to run this code every 5 minutes but i can't tell if it is running: Here is my cron code:
5 * * * * /home/username/custom/ >>/home/username/custom/email.log 2>&1

I activated the log (I think) but all i get is /var/log/cron.log and that only logs when I activate/deactivate or edit the cron file. is there anything else i need to set for this to work? I am running Ubuntu 9.10.

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Ubuntu :: Running Script From Cron?

Mar 1, 2011

I still can't figure out why my cron job isn't working. I'm sure I'm missing something obvious, but it's got me beat

I know cron is executing my script (I had it echo some lines to a file at points within the script, and that text showed up, but none of the files/folders are being copied or removed)

crontab looks like this:

#m h dom mon dow command
*/20 * * * * /scripts/scriptname


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Ubuntu :: Cron Jobs Not Running?

Jun 2, 2011

I have a cron job that executes fine in opensuse 11.4. It is located in

jpablo /srv/django-apps/smcommand/scripts/

It is correct, I want it to execute every minute. Now, I copied the same script to ubuntu maverick, and it doesn't run. Perhaps there's some ubuntu peculiarity that I'm not aware of?

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Ubuntu :: Running Cron As Root?

Jun 25, 2011

I have an external usb hard drive that spins down every 10 min. The commands in 'hdparm' do nothing to override the internal settings. So, I wrote a script to touch a file every 5 minutes, and it will run as root because of the mount command, and I want it to run for every user. The script is executable, owned by root, and root is the group, with 755 permissions. in /usr/sbin:

# Script to keep external drive from spinning down
diskmounted=$(mount | grep Backup | wc -c)


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General :: Cron Job Not Running / Possible Reasons For This?

Oct 15, 2009

I have 3 cronjobs set up on my Unix server . Out of which 2 cron jobs run the same script but at different times and the other one runs another script.
So in the 2 jobs which are set to run for eg , One runs on Sunday at 8AM and the other runs monday to friday at 6 AM . How ever the Sunday cronjob works (runs through the crontab) but the Cron job set for Monday to Friday is not working. However manually if i run this script it workd perfectly.

Please let me know what could be the possible reasons for this?

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General :: Running Scripts With Cron

Jul 21, 2010

I have a script in /root/ .how can i run this script with cron? "how to give path to script?"

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