I am using incron to monitor one of my file in /var/www/html directory.
output of incrontab -l
/var/www/html/test IN_ACCESS /home/intel/test.sh
This job is supposed to create a file in home directory, But when this job got executed (I opened the web address in browser), no file is created, following line is whon shown in /var/log/cron file
Jan 20 10:27:57 localhost incrond[26442]: (root) CMD (/home/intel/test.sh)
This clearly shows that event had occurred.
P.S: If I just run a /home/intel/test.sh in CLI its works fine and creates test file, following is my test.sh file.
#!/bin/bash
touch fm00
Mostly this problem occurs due to script file permission and ownership of script files. The same problem was faced by me. I found that my scrip owner was not a super user e.g. root.
So, you have to set the permission and ownership of your scrip as super user. Find below.
First of all edit your crontab as super user.(in RHEL like below)
[abc#host] crontab -e
and save crontab :wq!
Now set permission for script
[abc#host] chmod +x script.sh
[abc#host] chown root:root script.sh
Now restart your crontab.(in RHEL like below)
[abc#host] /etc/init.d/crond restart
Related
I installed Debian 9 on my VPS. I installed LAMP on the server. I'm logged in as root, I created a new site "/var/www/example.com" and I see that the permissions are "root:root". The web page is displayed in the browser.
I created a cron.php file that writes the current time to the file. In crontab I have /usr/bin/php /var/www/example.com/cron.php. If I run this command through the terminal, everything works. However, Crontab returns an error because it does not have write permissions. However, Crontab runs as root. The directory has 777 permissions.
I tried to set /var/www as www-data:www-data and the same for crontab (crontab -u www-data -e). The result is the same, cron runs but does not write to the file.
EDIT:
I found that if the script contains: file_put_contents('output.txt', 'xxx'); the file created by cron is in root. If I set the full path, everything is fine: file_put_contents('/var/www/exmaple.com/output.txt', 'xxx'); Is there any way to modify this behavior?
You can create sample script like this:
#!/bin/bash
source ~/.bashrc #or use .bash_profile
/usr/bin/php /var/www/example.com/cron.php >>/path/to/output
and add it as cron record:
0 * * * * /path/to/script/sh
I have got a RasPi and I actually try to execute a shellscript to automount a folder at every Reboot.
Script Command is:
sudo mount -t cifs 'folderpath' 'pointtomount' -o username=xxx,password=xxx,sec=ntlm
It works perfect if I use it manually but via cronjob it responses "Mount Error(13): Permission denied" and the mount can't be executed.
Means cronjob executes the file at least.
My idea was to mount it manually and check if automount is disabled in /etc/fstab or /etc/mtab. As it's just a folder I only found it in mtab.
I can't write in it but nowhere's "noauto" in the options so probabbly everything is correct.
Not certain if it has sth. in common with crontab execute rights but ls -lha /usr/bin/crontab output is -rwxr-sr-x 1.
If anyone of you got any clues how to solve this problem, i'd appreciate help.
Thanks
EDIT1:
Okay after hours and hours it seems to be working in /home/pi/.config/lxsession/LXDE-pi/autostart.sh (type "sudo nano /home/pi/.config/lxsession/LXDE-pi/autostart.sh"). In that file I wrote "#/home/pi/scripttoexecute.sh". In my executescript I wrote "sudo mount -t cifs 'foldertomount' 'directorypath' -o credentials=/root/.smbcredentials,iocharset=utf8,file_mode=0777,dir_mode=0777,sec=ntlm". Obviously to use the smbcredentials file, write "sudo nano /root/.smbcredentials" and in there "username=xxx" and next line "password=xxx" and optional domain.
Thanks to all and I hope that this might save someone elses time.
Not sure if it has sth in common with apt-get upgrade and apt-get update before.
Couple things here, first off every user can have their own crontab. For example:
crontab -e # Edit crontab of current user
crontab -u root -e # Edit crontab of root user (might need sudo for this)
crontab -u www-data -e # Edit crontab of www-data user
Another thing is that if you don't use crontab -e to edit the file, and actually edit the /etc/crontab file directly (do something like vim /etc/crontab), you can actually specify the user you'd like to run the cron as:
* * * * * root mount -t cifs /path/to/folder /point/to/mount -o username=xxx,password=xxx,sec=ntlm
To run via root's crontab at reboot, type:
sudo crontab -e
And add this line:
#reboot mount -t cifs 'folderpath' 'pointtomount' -o username=xxx,password=xxx,sec=ntlm
But really, shouldn't you be adding your auto-mounts to /etc/fstab?
I am trying to archive my localhost's root folder with tar and want to automate it's execution on a daily basis with crontab. For this purpose, I created a 'backupfolder' in my personal folder. I am running on Ubuntu 12.04.
The execution of tar in the command line works fine without problems:
sudo tar -cvpzf backupfolder/localhost.tar.gz /var/www
However, when I schedule the command for a daily backup (let's say at 17.00) in sudo crontab -e, it is not executing, i.e. the backup does not update using the following command:
0 17 * * * sudo tar -cpzf backupfolder/localhost.tar.gz /var/www
I already tried the full path home/user/backupfolder/localhost.tar.gz without success.
var/log/syslog gives me the following output for the scheduled execution:
Feb 2 17:00:01 DESKTOP-PC CRON[12052]: (root) CMD (sudo tar -cpzfbackupfolder/localhost.tar.gz /var/www)
Feb 2 17:00:01 DESKTOP-PC CRON[12051]: (CRON) info (No MTA installed, discarding output)
/etc/crontab specifies the following path:
SHELL=/bin/sh
PATH=/usr/local/sbin:/usr/local/bin:/sbin:/bin:/usr/sbin:/usr/bin
I assume that crontab is not executing as this is a sudo command.
Is there a way how I can get this running? What is the recommended, safe way if I don't want to hardcode my root password?
Well, the command that works for you is
sudo tar -cvpzf backupfolder/localhost.tar.gz /var/www
Which means, you have to run the command with sudo access, and it will not work from within your crontab.
I would suggest adding the cron job to the root user's crontab.
Basically, do
sudo crontab -e
And add an entry there
0 17 * * * cd /home/user/backupfolder && tar -cpzf localhost.tar.gz /var/www
If that doesn't work, add the full path of tar (like /bin/tar).
Also, while debugging, set the cronjob to run every minute (* * * * *)
Basically the problem is the sudo command so we will allow sudo to run tar for the "user" without prompting for the password.
Add the following line in /etc/sudoers file.
user ALL=(ALL) NOPASSWD:/bin/tar
where user is the user installing the crontab.
I suspect a PATH problem, try to set some variables at the top of sudo crontab -e :
MAILTO=your_email#domain.tld # to get the output if there's errors
PATH=/usr/bin:/bin:/usr/local/bin:/usr/local/sbin:/sbin
You can write your command in a script like run.sh
#/bin/sh -l
tar -cvpzf backupfolder/localhost.tar.gz /var/www
then use the crontab to run the script.
IMPORTANT NOTE: the script's first line has the "-l" option.
Try it.
I am running a shell script(Script.sh) which, itself, is calling other shell scripts(
Script2.sh, Script3.sh ...etc). I logged in as a root user and have given execution permission to all the scripts. But on when I execute "ls -l" the scripts still dont have execution permissions displayed on file attributes column. "Script.sh" runs by following syntax:
root#freescale $ sh Script.sh
But this script is not able to execute other scripts(Script2.sh, Script3.sh) being called by it. Error is reported as "Permission denied"
I already gave execution permission by chmod command but then also neither the permissions are changing nor the scripts(Script2.sh, Script3.sh ..) are executing.
I hope this error is due to the reason that Script2.sh are called in Script3.sh as:
./Script2.sh
./Script3.sh
And if I write it as :
sh Script2.sh
It executes but doesn't able to execute other script which are called inside Script2.sh and reports same error as "Permission Denied"
Make sure that your partition is not mounted with the noexec flag (which - as the name suggests - prevents making any files executable)
Kindly make sure the permission and ownership for the script.sh file, also try
# chmod 755 script.sh
# chown root.root script.sh
Thanks.
I have set the cron tab for my site. But I have got message in my mailing id like this "Permission denied" for the script. Can anyone help me telling what may be the problem.
Thanks......
You get this error while setting the crontab? or from a script running from the cron?
If while setting the crontab, try this:
You type: crontab -e
You get: -bash: /usr/bin/crontab: Permission denied
Problem: Your user is not in the cron group.
Solution: As root, edit the /etc/group file, find the cron group and add
your user to that line (the usernames are comma-separated).
Then re-login as your user.
Verify: Run command "groups". You should see "cron" in there.
(from http://www.parseerror.com/argh/crontab-e-Permission-denied.txt)
friends if any one wants schedule crons from other user
just do this
root user:-
ls /usr/bin/crontab
chmod 4755 /usr/bin/crontab
echo PATH
vi /etc/crontab
SHELL=/bin/bash
PATH=/usr/java/jdk1.5.0_22/bin:/root/bin:/usr/java/jdk1.5.0_22/bin:/usr/lib/qt-3.3/bin:/usr/kerberos/sbin:/usr/kerberos/bin:/usr/local/sbin:/usr/local/bin:/sbin:/bin:/usr/sbin:/usr/bin:/usr/X11R6/bin
MAILTO=root
HOME=/
cd /etc/cron.d
create cron.allow file if not exist
vi cron.allow
root
other username
save and exist
su – username
/usr/bin/crontab -e
schedule here ……………….
I ran into this issue today and was baffled until I realized that the denied commands were SSH commands. I had forgotten that I was connecting with an SSH key that required a passphrase, so the real issue had nothing to do with cron in my case.
My solution was to create an additional key for this script with no passphrase (using ssh-keygen), install it on the remote server, and specify it in the script with the -i flag to the ssh commands.
ssh -i /path/to/id_rsa.no-passphrase user#remote command-to-run