I made a tool to estimate the execution time of cron (+ PyPI debut)

It's a Python tool that I made in a small hour for a little wilderness. Since it was a big deal, I registered for PyPI for the first time, so I will introduce it on Qiita. Few people may be using cron in 2017, but ...

What kind of tool

A tool that outputs text how the crontab set in crontab works within the specified time. You can easily check multiple programs on multiple servers by skewering.

Originally, it was necessary to check the status of cron in server maintenance, so I made it quickly.

Source code

It is below. (I'm happy when I get a star)

PyPI
Github

How to use

Installation

pip install cronquot

Execution method

Prepare the crontab data under the crontab directory as shown below, and place the file output by crontab -l.

$ cat crontab/batch.txt
*/30	*/10	11	*	*	/usr/local/bin/potato.sh
*/10	*/2	2	*	*	echo `date` >> /tmp/log.txt

If you execute it like the following, the result.csv file will be created and you can check it. You can specify the execution period with an argument. If there is no argument, it will be from 0:00 to 24:00 today.

Start with -sYYYYmmddHHMMSS
End is -eYYYYmmddHHMMSS

(venv)ShoheiMacBookPro:tmp shohei$ cronquot -s20170403100000 -e20170403120000
(venv)ShoheiMacBookPro:tmp shohei$ cat result.csv
date, hour, miniute, second, scrip, server
2017-04-03,10,10,00,echo `date` >> /tmp/log.txt,batch
2017-04-03,10,20,00,echo `date` >> /tmp/log.txt,batch
2017-04-03,10,30,00,/usr/local/bin/potato.sh,batch
2017-04-03,10,30,00,echo `date` >> /tmp/log.txt,batch
2017-04-03,10,40,00,echo `date` >> /tmp/log.txt,batch
2017-04-03,10,50,00,echo `date` >> /tmp/log.txt,batch
2017-04-03,11,00,00,/usr/local/bin/potato.sh,batch
2017-04-03,11,30,00,/usr/local/bin/potato.sh,batch
2017-04-03,12,00,00,/usr/local/bin/potato.sh,batch
2017-04-03,12,00,00,echo `date` >> /tmp/log.txt,batch

If you put multiple files in the crontab directory, they will be viewed together. You can also skewer the server. (You can also specify the directory with -d)

Caution

The cron delimiter can only be used with tabs. I didn't have any problems with tabs, so I haven't added any special features. If you need it, it would be helpful if you could put out a PR (maybe if you raise an issue)

Other

It's a tool I made for myself, so I'm sorry if there is a bug ... There are quite a few tools out there to see the execution results, but I wanted something that works quickly from the command, so I made it. After all, I felt that even a simple tool wouldn't be nerve-wracking when I made it with the intention of putting it on PyPI properly. I think I'll write about how to use PyPI soon.