I want to run a cron job every 1st day of each month, I am using the PHP 7.4 remi package.
But whenever I try to do this:
* * 1 * * php /path/to/php/script
Nothing is working.
My PHP script is the following:
<?php
// Connect to DB
$conn = new PDO("sqlsrv:Server=IP;Database=DB", "user", "pass");
// Reset Tries
$reset = $conn->prepare("UPDATE trying_count SET Tries = 0");
$reset->execute();
?>
Do I need to install the PHP-CLI or something else?
Related
I have a job with Nodejs that I want to do it each 30 minutes to scan the Database and Update Products Data in An Ecommerce API with my Nodejs Program, note that the Nodejs Program is serving an REST API (Backend) for a react js web application
So I searched for that and I found that I can do that with Nodejs Cron Library like "node-schedule" but I know that will be more interesting to do it with Linux Cron
var j = schedule.scheduleJob('42 * * * *', function(){
console.log('The answer to life, the universe, and everything!');
});
Is there any library that can let me add Cron jobs to Linux using Nodejs Or would I do it with "fs" only? so I will open the cron job file and add my command?
The command crontab which is part of Vixie Cron allows you to create, edit and delete per-user cron entries.
Or if you are running as the root user, which you should not be doing, you can drop cron files into /etc/cron.d
This is not always supported, and if you're running in a Docker type container environment it is doubtful that you have any cron at all. In that environment you'd want your running Nodejs to handle scheduled jobs for you. Or use some other kind of distributed scheduled work system.
You can put your cron job to a nodejs script. Then adding to the crontab can be done with cronbee module, via API:
import { cronbee } from 'cronbee'
await cronbee.ensure({
taskName: 'do smth',
taskRun: `node my-script`,
cron: '42 * * * *'
})
or you can ensure the cron job via CLI, if the module is installed globally or from npm scripts:
$ cronbee ensure mytasks.json
Following these instructions I got R-Studio Server running on a Google Compute Instance: http://code.markedmondson.me/launch-rstudio-server-google-cloud-in-two-lines-r/
When I open a terminal from this RStudio-Server I note that man, ps, vi, cron are all absent.
bash: ps: command not found
My goal is to have a simple cron job periodically run an R-Script.
I manually installed cron with:
sudo apt-get update
sudo apt-get install cron
Still, I can't get cron to run this test:
cmd <- cron_rscript("/home/law9723/now_to_file.R")
cron_add(cmd, frequency = "*/1 * * * *", id = "now_to_file", description = "Write now to file every minute")
-Clearly Confused
I got things to work eventually by using these very helpful instructions: https://yuhuisdatascienceblog.blogspot.ca/2017/07/setting-up-r-studio-server-on-google.html
Using absolute path names with everything associated with cron is sage advice.
I think when I created a vm with this command the sandbox that Rstudio-server lives in is very minimal. Hence, no vi, man, cron, ps...
gce_vm(template = "rstudio",
name = "my-rstudio",
username = "mark", password = "mark1234",
predefined_type = "n1-highmem-2")
I have had success using the rstudio addin. A reference is
http://www.bnosac.be/index.php/blog/51-new-rstudio-add-in-to-schedule-r-scripts.
I am also under the impression that you have to start cron with
sudo cron start
As in https://cran.r-project.org/web/packages/cronR/README.html.
I install the packages shinyFiles, miniUI and cronR when I first get into the Rstudio on GCE after using googleComputeEngineR locally like you. Then "Schedule R scripts on Linux/Unix" will appear in the add-in list.
I have been trying to figure out how to use crontabs on my mac OS X I have a node script written that I would like to be able to execute in a scheduled manner. Here is the line I am using in my crontab file.
30 * * * * /usr/local/bin/node /Users/pmanca/Google Drive/JavaScript/code/Peter/marketing-tests/testBackup.js
It doesn't appear to be executing though. Can anyone see what I am doing wrong? Also is there another way on a mac or linux server to accomplish what I'm looking for? Also can you use the same line for a crontab job in linux as well(besides the file paths needing to change)?
You can use one of the two npm packages, cron or agenda
Both work on linux and OS X. Cron is best if your tasks are lightweight and you don't need your jobs to be persisted into db. Agenda uses mongodb for persistence.
You can configure a job in cron as:
var CronJob = require('cron').CronJob;
var job = new CronJob({
cronTime: '00 */30 * * * *',
onTick: function() {
/*
* Runs every 30 minutes, every hour, every day, all week
*/
},
start: false,
timeZone: 'America/Los_Angeles'
});
job.start();
To run in background on server you can run it with forever
Remember cron has an additional 6th place to the left for seconds. Otherwise the syntax is same.
By default cron process doesn't have the required permission to access the disk in macos. So, you should allow full access disk to cron process. For this one, add /usr/sbin/cron to your allowed full disk access process under Security & Privacy. Further information can be seen in How to Fix Cron Permission Issues in MacOS Catalina & Mojave
I'm trying to run a ruby script that I can run just fine using Ruby from my home directory, but that fails using cron. The beginning of the script autocheck.rb looks like this:
require 'rubygems'
require 'mechanize'
require 'json'
require "active_record"
ActiveRecord::Base.establish_connection(
:adapter => "postgresql",
:encoding => "utf8",
:database => "depot_development",
:pool => "5",
:username => "depot",
:password => "fake_pwd")
The crontab looks like this:
*/15 08-17 * * 1-5 ruby /home/user/autocheck.rb
I checked the other entries here relating to cron and rvm (presuming that's the problem; I'm using rvm and ruby version 1.9.3) but I couldn't figure out the solution. Any help would be appreciated.
RVM has a command to setup schedules for you:
rvm cron command "*/15 08-17 * * 1-5" ruby /home/user/autocheck.rb
I'm trying to set up a node script to run as a cron job on Joyent. I can run arbitrary commands but node scripts to seem to execute. As an example:
# cron
# call a script every minute
# being specific about the location of node and the script to run
* * * * * /home/node/local/nodejs/bin/node /full/path/to/some-script.js
// node script at /full/path/to/some-script.js
var fs = require('fs');
fs.writeFile('/home/node/node-service/some-script.log', new Date.toString(), 'utf8');
What I expect to see after one minute is a file at /home/node/node-service/some-script.log with content like Mon Jan 21 2013 15:19:11 GMT-0600 but I see nothing. This is still the case even if the script is set to full read, write and execute permissions for all users and whether the crontab is set for the root or node users.
What am I missing?
Thanks
The fourth optional argument to writeFile is a callback to fire when the file system is done writing the file. You can use it to determine the error that is happening, as it's only argument is an error. Refer to the docs here.
It appears to be working now. I'm not sure what I changed that got it working. It may have been a permissions issue.