Questions tagged [cron]
Cron is a time-based job scheduler in Unix-like computer operating systems. Cron enables users to schedule jobs (commands or shell scripts) to run periodically at certain times or dates.
1,946
questions
0
votes
0
answers
24
views
Add Trigger Events to a Schedule Queue in Linux
I have a MySQL table on a Ubuntu or CentOS machine which contains rows on when to start and stop a bunch of 1000 AWS / Azure servers.
Right now its implemented in such a way that a cron is running ...
- 327
0
votes
0
answers
52
views
solaris 10 cron job won't run but will run fine from command line
#!/bin/sh
#grab oldest file from queue
stuff=\`ls -1 /var/spool/lp/requests/localhost/ | /usr/bin/head -1\`
#pull printer name from lp requests (first line in file)
puff=\`cat $stuff | /usr/bin/...
- 1
0
votes
0
answers
17
views
Cron job is wokring fine but new cron logs are not adding in cron log file
i mistakely press wq! in cron log file located /var/log/cron now new logs are not updateing in cron log file i serach many thing like
remove cron file and touch /var/log/cron Steel not updateing
...
1
vote
1
answer
41
views
/etc/cron.d not running job [duplicate]
I need to run a script as a user to backup my database every night. I added the following cron job in /etc/cron.d/backup-mysql via ansible.
0 3 * * * backup_mysql /path/backup-mysql.sh
I can see the ...
- 321
0
votes
2
answers
66
views
How to run a python script in a specific directory automatically?
I have a python script that I wish to run at 5pm every Friday.
How can I achieve that ?
I understand I could do this through cron. However, as I have used relative file paths in the Python script and ...
0
votes
0
answers
15
views
Dillon's dcron SYNC and ASYNC
The specific question for cron using Dillon's minimalist cron version is:
How to create a cron job that runs every first Friday of the month, in ASYNC mode?
Dillon's cron attempts to mix synchronous ...
- 109
0
votes
1
answer
61
views
crontab job output not generating email
I have been running many cron jobs (on various operating systems, CentOS, for example) that normally run with no output. I usually keep an eye on my jobs by checking my email. I use the fact that ...
- 225
1
vote
1
answer
68
views
Cron executes while partly ignoring trigger
There's a problem with my crontab
I set
*/5 * * * * /home/money/relaunch.sh
in crontab -e
in relaunch.sh is
#!/bin/bash
/usr/bin/pgrep -l -x xyz || /home/money/a.sh && /home/money/xyz.sh
...
- 11
1
vote
1
answer
35
views
CentOS scheduled OOH restart of service
I would like to schedule a one-off OOH restart of a service using cron.
Can I just add something like:
/usr/sbin/service myservicenamehere restart
... in the crontab, to run once?
- 277
1
vote
1
answer
116
views
Redirecting stdout and stderr doesn't work with cron
I have the following cron task. Expected behavior is that every output (standard output and standard error output) of this task will be redirected to /dev/null. Unfortunately this doesn't work. Emails ...
- 239
0
votes
0
answers
22
views
Change default cron log location
I have apache server with $HOME is var/www/, I create a cron job and all logs get into that directory, how to change it to another folder? Is there any config file on apache to change that? Btw, I'm ...
- 101
0
votes
0
answers
23
views
why almalinux is hanging over night with auditlog
hey there is a hosting server
overnight my server hanged up and must to restart it in morning to get it back online and saw this error in my console (you can see the picture)
please help me
https://...
0
votes
0
answers
133
views
Cronjobs not running (Job execution of per-minute job scheduled delayed) [duplicate]
The cronjobs on an AlmaLinux 9 64bit system are not running.
I added 2 simple jobs to the crontab, which run fine from the command line:
[root@sendy ~]# crontab -e
* * * * * date > ~/cron....
- 1
0
votes
0
answers
141
views
logrotate works manually but not works automatically via cron on Ubuntu 18.04
I have a logrotate task to rotate my nginx logs. I have my config file in /etc/logrotate.d/nginx. When I run logrotate -f /etc/logrotate.d/nginx, it can rotate the logs correctly, which means my ...
- 111
0
votes
1
answer
74
views
Error when I execute crontab in linux
I'm executing a crontab where it call the script of python and the crontab are executing very well, but when I execute the crontab I need its will create other file in another directory, but that ...
- 103
0
votes
0
answers
97
views
cron / crontab : auto delete oldest backup files when new files get backed up, only if disk space is near capacity
I am using crontab (on Ubuntu Server 20.04) to automatically create daily backups of a text file and storing them on an external hard drive. I am using the following crontab to create my backups:
@...
- 93
0
votes
1
answer
50
views
crontab job did not start on CentOS7 [duplicate]
here is the crontab for root on my CentOS7 :
# crontab -l
# Lines below here are managed by Salt, do not edit
# SALT_CRON_IDENTIFIER:CLEANCORE
0 * * * * /var/lib/scality/cleancore/clean_core.bash --...
- 297
0
votes
0
answers
35
views
Crontab I have tried cronitor airplane nothing helps
my crontabs do not run, sys log gives me this, Jan 6 08:30:02 joe-sbc-flt1 CRON[102851]: (joe) CMD (/home/joe/scripts/watchit.sh) I have no idea what it means or what is wrong, can anyone help?
0
votes
1
answer
102
views
Cron Jobs don't run all the time (just a part of the hour)
I work on a website who is using cron jobs for import and update products. The platform is Woocommerce.
The supplier offered the csv file, and a server requirements. I have them over the requested: ...
0
votes
0
answers
30
views
Cron Job Shell Backup file: Permission Failed
Ive been trying to create a Cron Job to Ultimatly back up the Data within my Public Html File
backup-JMORetail.sh Code
#!/bin/sh
NOW=$(date +'%Y.%m.%d')
tar cfz /home/jmoretai/Back-Ups_Local/...
1
vote
1
answer
213
views
What is the best directory to place your cron jobs?
We have a machine that executes cron jobs. We'd like to upload (via scp) cron job files to. Here is an example of a cron job file (test.cron):
* * * * * echo "test" > /tmp/test_cron
This ...
- 13
0
votes
1
answer
392
views
Cronjob "No space left on device" when logging error but there is space [duplicate]
I am trying to troubleshoot some cronjob problems I am having so I wanted to start logging them.
* * * * * wget https://www.example.com/dosomething.php >> /var/log/myjob.log 2>&1
When I ...
- 155
0
votes
1
answer
71
views
is my crontab syntax invalid?
simple question:
10 4 * * * rm -rf ~/code/rehlds/build/ && ~/code/rehlds/build.sh --compiler=gcc --jobs=4 > /dev/null 2>&1
I checked an there is no /build folder which indicates ...
- 1
0
votes
2
answers
112
views
How to make timeout(1) behave in cron like it behaves in interactive shell
Running this command in an interactive bash:
$ timeout 1 sleep 2; echo $?
124
returns 124 after 1 second, as expected and as documented in timeout(1).
However, if I run the same as a cron job, or if ...
- 101
-1
votes
2
answers
70
views
mailx Set Name of Attached File
I have a cron job, whose output I send to mailx:
# Monday morning at midnight; "mail" is symlink to "mailx"
00 00 * * mon python3 script-with-7500line-output.py | mailx -S 'from=...
- 104
0
votes
3
answers
174
views
Crontab not working as expected [duplicate]
Dears,
i configured script in crontab to run every 10 minutes and its not working at all. I dont see any entry in configured log path (/var/log/cron)
"*/10 * * * * example_script.sh"
...
- 11
0
votes
1
answer
374
views
CRON Job to delete files (not folders) with specific extensions within a folder and subfolders
I need a cron job that will delete all files with these extensions (.jpg, .jpeg, .png, .pdf) in a folder (including files in subfolders, but not the subfolders themselves) twice a day. I'm using ...
- 3
0
votes
0
answers
47
views
GAWK not running in crontab
I have the below script running successfully manually. But when it is executed in crontab (below), I dont see anything happening.
Script
#!/usr/bin/gawk -f
#!/bin/bash
PATH=/usr/local/bin:/usr/bin
#...
- 754
1
vote
0
answers
201
views
Cron not working after pam customization to check groups
I need help with a PAM configuration.
I've a Debian 11.5 machine with kerberos connected to an MS AD server.
I want to configure the machine in order to allow some AD user to login, filtering them by ...
0
votes
1
answer
66
views
What time is used when I set crontab @daily?
What time is used by crontab when I use the option @daily?
Where is this information stored on Debian/Gnome?
And how can I change this time value?
- 111
0
votes
1
answer
75
views
Alternative to incron in Photon OS
I'm setting up a server with Photon OS. I need to get a notification everytime a file is modified. I used incrontab in former Ubuntu Server setups, but this utility is not available in Photon OS ...
- 113
0
votes
1
answer
421
views
Using Crontab to run a shell script with SSH
I’m trying to use a cronjob to run a shell script on my EC2 instance, which SSH’s to a server to get a mongodump of a database and restore at a given specific time without me having to login.
I’ve ...
1
vote
1
answer
24
views
Crond Inactive Every Other Minute
I have a problem with crond (dated 13Feb21) on my Slackware 14.2 x86_64 (Linux version 5.12.10) server.
I have a script that crond runs every minute that accesses an external device for current data ...
- 11
1
vote
1
answer
382
views
CRON not sending output to email, but writing output /var/log/cron
I have a Rocky 8.5 server. Initial settings in Cron as follows (same as our other servers, which work fine forwarding cron output emails)
HOSTNAME=xxxx
CVS_RSH=ssh
MAILTO=yyyy@zzzz
35 * * * * /usr/...
- 133
0
votes
0
answers
72
views
banning IPs from file in Fail2ban
I've installed fail2ban and it's working fine in banning IPs that try to access ssh with invalid username/password even if they tried once.
Now I'm receiving key exchange attacks that fail2ban doesn't ...
- 3
0
votes
0
answers
308
views
php artisan schedule:run running twice by root and ubuntu user?
we are having a problem that kernel commands running twice. I checked if the schedule runs the command and if it exists more than once.
I check with this command
ps aux | grep "artisan schedule:...
- 101
0
votes
0
answers
65
views
Debian 10: user cron does not runl; cron[xxx]: Permission denied
all.
Weird errors when trying to run cron on a Deb10 instance. Root is the only user that succeeds in cron. I've tested a simple called to logger and a script that sends an email. No errors running ...
- 167
0
votes
0
answers
72
views
Use EasyCron to make cURL request with cronjob
I want to make a cURL request every 12 hours and trigger the request with a cronjob.
Unfortunately I'm a total newbie in cURL and cronjobs.
This is the request I want to make:
curl --location --...
- 135
0
votes
1
answer
25
views
Move Services From Servers in Aws
Could anyone advise the best method(s) to move service from one EC2 instance to another? For example Test-dev we want to spin up and replace with TEST (server) but we want to get CRON services and ...
- 71
0
votes
2
answers
92
views
How do i run a cronjob every 100 days
What would a crontab syntax look like for a command to run every 100 days?
I need to run a reboot every 100 days
- 103
1
vote
1
answer
349
views
start-stop-daemon: command not found . This error only occurs at boot time in a cron job
I have scheduled an @reboot cron job to start a service in /etc/init.d
After boot, service is not started when I reach shell command line. The contents of /var/log/cron show the following,
2022-09-...
2
votes
1
answer
193
views
How to change the default email address for the non-root user in postfix?
I have a user called admin (not root) and have setup everything under that user's account.
I have also crontab that is meant to run a bash script at a certain time in the day.
For some reason the ...
- 1,485
-1
votes
2
answers
76
views
Crontab query - won't execute program [duplicate]
Noob question.
I have an executable file saved here:
/home/pi/auroramon-1.07/src/auroramon
When I enter /home/pi/auroramon-1.07/src/auroramon in the command line the program runs.
I created a crontab ...
- 1
1
vote
1
answer
43
views
What is supposed to happen to running cron processes after modifying them with crontab -e?
So here's the situation:
I start a program @reboot with Cron (OS is Debian 11).
This program keeps performing tasks unless it encounters an illegal state.
I change the CLI variables for this program ...
- 115
0
votes
3
answers
1k
views
Crontab not found in docker image
I have a docker image set up by another person, and it doesn't seem to have cron installed. When I tried to run crontab -l (be it as a root or non-root user), it says command not found. But I do see /...
- 211
0
votes
0
answers
22
views
gio operation not supported in a cron task [duplicate]
I have a task (script) that I added via crontab -e (Ubuntu 20.04). The task uses gio to copy a file in /tmp (that was created a line before in the script) to Google Drive. Running the gio command in a ...
- 1,077
1
vote
1
answer
37
views
Hosting resource intensive PHP cron jobs
My website is currently running on a VPS. To make the site work, I have a number of resource intensive cron jobs - and when they are running, my site stop responding/becomes incredible slow.
I'm ...
- 11
1
vote
1
answer
392
views
How to monitor scripts executed via cron and perform action on elapsed times?
I run numerous scripts via CRON throughout the day, and as they rely on third-party providers which sometimes are slow, I currently run them like so timeout 60m bash /script.sh and that's worked great ...
- 11
0
votes
2
answers
78
views
Duplicity Macos crontab (python errors )
I am having errors while running duplicity in macOS (crontab)
The duplicity command is as follows (works in Command-line)
/usr/local/bin/duplicity /Users/myname/go file:///Volumes/EVO840\ -\ IMPORTANT/...
- 173
-1
votes
2
answers
1k
views
Cron job to backup the MySQL database produces empty dump files with no errors logged that I can find
My site is controlled via cpanel. I want to automate the backup of my databases and then automate their download to my development machine. The first step was to set up the cron jobs as follows
0 3 ...
- 302