crontab | Go/Golang crontab ticker | Cron Utils library

 by   mileusna Go Version: v1.1 License: MIT

kandi X-RAY | crontab Summary

kandi X-RAY | crontab Summary

crontab is a Go library typically used in Utilities, Cron Utils applications. crontab has no bugs, it has no vulnerabilities, it has a Permissive License and it has low support. You can download it from GitHub.

This package provides crontab tickers to golang apps, supporting crontab-like syntax like * * * * * or */2 * * * * etc.
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            kandi-support Support

              crontab has a low active ecosystem.
              It has 71 star(s) with 16 fork(s). There are 5 watchers for this library.
              OutlinedDot
              It had no major release in the last 12 months.
              There are 1 open issues and 4 have been closed. On average issues are closed in 26 days. There are 2 open pull requests and 0 closed requests.
              It has a neutral sentiment in the developer community.
              The latest version of crontab is v1.1

            kandi-Quality Quality

              crontab has no bugs reported.

            kandi-Security Security

              crontab has no vulnerabilities reported, and its dependent libraries have no vulnerabilities reported.

            kandi-License License

              crontab is licensed under the MIT License. This license is Permissive.
              Permissive licenses have the least restrictions, and you can use them in most projects.

            kandi-Reuse Reuse

              crontab releases are available to install and integrate.
              Installation instructions are not available. Examples and code snippets are available.

            Top functions reviewed by kandi - BETA

            kandi has reviewed crontab and discovered the below as its top functions. This is intended to give you an instant insight into crontab implemented functionality, and help decide if they suit your requirements.
            • parsePart parses a string into a map .
            • parseSchedule parses and returns a job object .
            • new creates a crontab
            • getTick returns a tick from the given time .
            • MustAddJob is like AddJob but panics .
            • New returns a crontab struct
            Get all kandi verified functions for this library.

            crontab Key Features

            No Key Features are available at this moment for crontab.

            crontab Examples and Code Snippets

            No Code Snippets are available at this moment for crontab.

            Community Discussions

            QUESTION

            How to speed up getting data for javascript array
            Asked 2021-Jun-14 at 20:25

            I want to get the creation date of 20000 files and store it in an array.
            Total time to complete is 35 minutes, quite a long time. (Image Processing Time)
            Is there a way to create the array with faster processing time?

            Is there any problem with the current logic to get an array of file creation dates like below?
            ① Array declaration: var arr = [];
            ② I used the code below to get the file creation date:

            ...

            ANSWER

            Answered 2021-Jun-10 at 03:45

            You're using fs.statSync which is a synchronous function, meaning that every time you call it, all code execution stops until that function finishes. Look into using fs.stat (the asynchronous version), mapping over your array of filepaths, and using Promise.all.

            Using the fs.stat (the asynchronous version) function, you can start the calls of many files at a time so that it overall happens faster (because multiple files can be loaded at once without having to wait for super slow ones)

            Here's an example of what I mean, that you can run in the browser:

            Source https://stackoverflow.com/questions/67913741

            QUESTION

            AttributeError: 'int' object has no attribute 'timetuple'
            Asked 2021-Jun-12 at 01:35

            Quick note: this error may be somewhat linked to this thread, but the use case and python version (the other one is still at v2) is different. Other similar threads don't regard specifically to python datetime.

            I have the following code:

            ...

            ANSWER

            Answered 2021-Jun-12 at 01:35

            This seems like a problem with the dependency that I'm using (UnixDateTimeField) as the error thrown out was pointed toward the package in my virtual environment.

            I resorted to store the time in an integer field:

            Source https://stackoverflow.com/questions/67944706

            QUESTION

            How to run php script on linux server every second?
            Asked 2021-Jun-11 at 15:00

            Im new to this so im a little confused. I have a PHP script that is in an infinite loop. It will never stop looping after i execute it once. And i need to run it on my linux server. I was thinking about using crontab,but apparently,it only can execute a script every minute. What i dont get is; If my PHP script is running in an infinite loop,do i need to only run it once and it would work fine,right? So do i just need to use crontab to run my script ONCE,and then to run on restart,and it would work?

            I wont post my script here because there is no need to. Just imagine something like

            ...

            ANSWER

            Answered 2021-Jun-11 at 15:00

            I think you could just set up a bash script that executes your PHP, which would have no for loop as in your code, but simply be the echo:

            Source https://stackoverflow.com/questions/67937148

            QUESTION

            How to run my Python script with Anaconda environment in crontab?
            Asked 2021-Jun-09 at 10:37
            • I want to scedual a task with crontab to run a python file in a specific anaconda environment every day at a certain time.
            • I also have a python script to do so.
            • The pythons script runs if I jsut execute it with python h.py in the anaconda evoronment in terminal. h.py is in the home directory
            • I am usaing Ubuntu 20.04, and i havent refreshed on intalled any new cron or crontab
            • I have tried the following commands to get it work but they just do Nothing (the result should be a folder and it is learly not has been created)
            ...

            ANSWER

            Answered 2021-Jun-09 at 10:37

            If the Python file only need python (not other library)

            Source https://stackoverflow.com/questions/67752093

            QUESTION

            Reason for separate Volume Container
            Asked 2021-Jun-09 at 10:30

            I've found following docker composition:

            ...

            ANSWER

            Answered 2021-Jun-09 at 10:30

            On modern Docker I'd never use this pattern, and in particular I'd avoid volumes_from:.

            volumes_from: has the two problems of not being clear of what exactly it's mounting and not having any control over where it gets mounted. If the image for your backup had a VOLUME declaration in its Dockerfile, for example, that volume would get mounted in your cron container at the exact same path as in the backup container, even though it's not listed in this docker-compose.yml anywhere. That can lead to surprising outcomes.

            Docker didn't always have named volumes. Before there were named volumes, the way to get persistent sharable storage was to create a data volume container that created an anonymous volume, and then run other containers with docker run --volumes-from ... to attach that storage. Now that named volumes exist, there's not a need to do that any more.

            Source https://stackoverflow.com/questions/67898889

            QUESTION

            How to avoid "module not found" error while calling scrapy project from crontab?
            Asked 2021-Jun-07 at 15:35

            I am currently building a small test project to learn how to use crontab on Linux (Ubuntu 20.04.2 LTS).

            My crontab file looks like this:

            * * * * * sh /home/path_to .../crontab_start_spider.sh >> /home/path_to .../log_python_test.log 2>&1

            What I want crontab to do, is to use the shell file below to start a scrapy project. The output is stored in the file log_python_test.log.

            My shell file (numbers are only for reference in this question):

            ...

            ANSWER

            Answered 2021-Jun-07 at 15:35

            I found a solution to my problem. In fact, just as I suspected, there was a missing directory to my PYTHONPATH. It was the directory that contained the gtts package.

            Solution: If you have the same problem,

            1. Find the package

            I looked at that post

            1. Add it to sys.path (which will also add it to PYTHONPATH)

            Add this code at the top of your script (in my case, the pipelines.py):

            Source https://stackoverflow.com/questions/67841062

            QUESTION

            Wifi-connect works in bash but not in crontab
            Asked 2021-Jun-07 at 07:18

            I use wifi-connect to configure my Raspberry Pi in unknown WLAN Networks.

            wifi-connect works when I execute it via command line once the system booted, but when I put it into sudo crontab -e, it won't work. The cron logs show no errors. The autostart of my own scripts works.

            My crontab: @reboot /usr/local/sbin/wifi-connect

            Does someone have a hint for me why this does not work?

            ...

            ANSWER

            Answered 2021-Jun-07 at 07:18

            Usually this kind of issues (when things works in a terminal but not in crontab), since there is nothing tricky in the crontab entry (you are just calling a executable with no arguments) are due to timing issue. Likely the crontab entry get executed before the network stack is ready. To do a quick test add a delay to that execution prepending sleep 60; to your command, this will delay the execution of 1 minute, which should be enough. Anyway this is not a reliable solution, you will have to user a script o a service which actually check for the network stack.

            Source https://stackoverflow.com/questions/67860628

            QUESTION

            Crontab not sending Sendgrid emails from Python script on AWS Linux 2
            Asked 2021-Jun-05 at 20:29

            I have an AWS Amazon Linux 2 box. I am using a python script (Python 3.7) to send an email using Sendgrid as the SMTP service. I can send the email using $ python3 send_email.py but, when I use crontab ($ crontab -e then * * * * * python3 ~/apps/send_email.py), the error in the log file /var/log/cron is (CRON) EXEC FAILED (/usr/sbin/sendmail): No such file or directory. The crontab is working as expected (I've tested other cron commands and they work fine), but the email part is what's not working.

            Here's what I've tried to fix it:

            1. Run the command as a root crontab (ie $ sudo crontab -e)
            2. Run the the crontab as a user crontab (ie $crontab -e)), but with sudo python3 ... in the crontab command.
            3. Add the path directory at the top of the crontab file in case those directories couldn't be resolved
            4. Installed Postfix to install something in the /usr/bin/sendmail directory but, since I don't need it to run the Sendgrid-powered email using $ python3 send_email.py, I'm not sure why I would need it through cron. I could be totally wrong on this, though. With Postfix installed, it resolves the (CRON) EXEC FAILED (/usr/sbin/sendmail): No such file or directory error in the cron log - the log entry in that case is (ec2-user) CMD (python3 ~/apps/send_email.py) - but I don't receive an email. Probably because Postfix isn't configured for the SMTP I'm using (Sendgrid).
            5. (EDIT) I have configured Sendgrid to work with Postfix via the Sendgrid docs but it still won't send me an email although it looks like nothing is erroring out in the Postfix logs...
            ...

            ANSWER

            Answered 2021-Jun-05 at 20:28

            I was able to finally resolve this after much troubleshooting. Here's what worked.

            1. I kept the original setup the same: Sendgrid for SMTP using their python lib (no Postfix or smtplib), using user crontab (using $ crontab -e not $ sudo crontab -e), and using Python 3.7.
            2. Apparently the word 'email' in the python script name can cause interpreter issues so I renamed the file to remove the word 'email'. For example, send_noti.py instead of send_email.py
            3. I used absolute paths for every call to a file in the python script. I was reading, writing, and executing files in the user directory in my python script as well as sending an email. Those R,W,X commands started erroring out in cron but not when called from outside of cron for some reason, even after renaming the file. Using absolute paths for all references to files fixed that.
            4. I also used the absolute path for the python file in the crontab file. For example, * * * * * python3 /home/ec2-user/apps/send_noti.py instead of * * * * * python3 ~/apps/send_noti.py
            5. I removed the unnecessary items in the crontab file I had put in before such as redefining the PATH directory.

            I hope this helps someone because this took me about 3 weeks to troubleshoot and figure out.

            Source https://stackoverflow.com/questions/67795271

            QUESTION

            Django 2.2 cannot serialize default values once migration has been done
            Asked 2021-Jun-04 at 12:52

            I have a model which is refered to as a foreignkey with on_delete set to SET_DEFAULT. Because of that, I need to provide this model with a default item. I created a static method which does just that.

            ...

            ANSWER

            Answered 2021-May-31 at 10:23

            Django needs to serialize your models to make migration files for them. Hence it also needs to serialize most of the attributes you set on the model fields (default included). Currently you define a method and directly call that instead of providing the method as the default, also your method returns a tuple with ScheduleChoice and a boolean.

            Django can serialize booleans but not the model instance (for the migration) hence you get an error, not to mention the tuple would have caused an error anyway. You should not call the method and instead just pass the method as the default, also instead of returning the instance return only the pk, also ideally this method should simply be a function:

            Source https://stackoverflow.com/questions/67771130

            QUESTION

            Django-Celery No Periodic Outputs
            Asked 2021-Jun-04 at 09:08

            I am trying to use Celery to create periodic tasks in my application. However, I cannot see the outputs of the periodic task that I wrote.

            The backend is on a Windows-based redis-server. The server is up and running.

            project/celery.py

            ...

            ANSWER

            Answered 2021-Jun-04 at 09:08

            You need to start celery beat, because that him that will read the database and execute your task.

            install : https://github.com/celery/django-celery-beat

            so in CLI, you need to execute :

            Source https://stackoverflow.com/questions/67834249

            Community Discussions, Code Snippets contain sources that include Stack Exchange Network

            Vulnerabilities

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            You can download it from GitHub.

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