Basically, yes. You can configure most cron programs to mail task output to you (it’s usually done by setting the MAILTO variable in the crontab, provided sendmail is available on your system).
I use that to do things like:
0 9 11 10 * echo 'lunch with John Doe at 12:20'
It sends me a mail, and I can see the upcoming events with crontab -l. If it’s not a recurring event, I then delete the rule.
My favorite cost cutting tip is to avoid big webapps running on docker, and instead do with small UNIX utilities (cron instead of a calendar, text files instead of note taking app, rsync instead of a filehosting dropbox-like app, simple static webserver for file sharing, etc). This allows me to run my server on a simple Raspberry Pi, with less than 500mb of used RAM in average, and mininal energy consumption. So, total cost of the setup:
With that, I run all services I need on a single machine, and I have a backup plan for recovery of both hardware and software.
Getting used to a UNIX shell and to UNIX philosophy can take some time, but it’s very rewarding in making everything more simple (thus more efficient).
At the very least, it means the CEO doesn’t understand the domain. It may be because he sees this part of the business as secondary and less important, or because it was developed so fast he didn’t have time to grasp the concepts, probably he was not a driving force in that effort. I certainly hope the tech side is more aware. Without more proof of CEO implication, I certainly would not bet on that horse to survive in the distant future, though.
“Git hosting” would be more appropriate. Unless that by frontend, you mean specifically web frontend, but that would be weird, because forges also provide the web backend part.
Sourceforge was the biggest FOSS host in the 2000s, before GitHub (mainly because there was not much centralization to begin with). That train is long gone. :) Sure, the name and website Sourceforge still exist. Myspace, Digg and Yahoo do too. They are basically web ghosts, only an echo of what they once were.
Actually, I do use git bare repos for CD too. :) The ROOT/hooks/post-update executable can be anything, which allows to go wild : on my laptop, a push to a bare repos triggers deploy to all the machines needing it (on local or remote networks), by pushing through ssh to other bare repos hosted there, which builds and installs locally, given they all have their own post-update scripts ; all of that thanks to a git push and scripts at the proper paths. I don’t think any forge could do it more conveniently.
For me the main interest of forges is to publish my code and get it discovered (before GitHub, getting people to find your repos hosted on your blog’s server was a nightmare). Even for the collaboration, I could do with emails. That being said, most people aren’t on top of their inbox, in which mails from family are mixed with work mails and commercial spam in one giant pile of unread items, so it’s a good thing for them we have those issue trackers.
^^
Oh, my apologies, Sourceforge! Say hi to Myspace for me!
That’s the name we use to designate software like GitHub, GitLab and similar, which provide repositories hosting and tooling like issue trackers. It’s supposed to be named like that because of SourceForge, the oldest of such tools, although I didn’t hear the term “forge” before the last 5 years or so, long after SourceForge demise, so I imagine there is a bit of nostalgia in this name (not sure who is nostalgic of SourceForge, though 😂). The wikipedia page : https://en.wikipedia.org/wiki/Forge_(software)
The worst part is that this is a direct quote from Harness’ CEO, not from TechCrunch author. :) Maybe they have a great product, I don’t know, but it certainly feels like an amateurish launch. :D
There hasn’t been a new Git repo launch in almost a decade
Am I the only person annoyed they seem to mistake repositories for forges? It’s already annoying when casual users say “git” for “GitHub”, but those guys actually want to build a forge, explaining they’re going to do better than anyone else. Maybe start by properly using the terms?
The good news is that with ircv3 being worked on, it may soon(ish) be quite dusted. :) It adds features like reply threads, history from when you weren’t connected, message editing and deletion, and more!
Take back the control on your data, that’s the whole point… :) Where are you regularly saving data? Those are the prime candidates. Look at self-hosted alternatives for those services. I know big webapps hosted in docker containers managed by kubernetes is all the rage around here, but you can often find Unix style equivalent for such services, the main advantage of putting it on a server being to be able to access it from multiple devices. But you do you, if you prefer hosting big webapps, that’s fine too. :)
I organize my crontab by having group of tasks (the programs, the holidays, the housecleaning, etc). And of those groups, the events (the non recurring tasks) come last. So I just list the crontab (crontab -l) and the list of things to come print to the screen, that block being at the end of the file. It’s hard to do better than a text file to list things. :)
I don’t know if there is a program that lists like “what is coming this month” if you really want to filter out the rest, but it should be easy enough to write, given the format of cron rules:
crontab -l | grep '*' | awk '{print $4 "," $3 "," $2 "," $1 " " $0 }' | sort -n | grep -E "^$(date '+%-m')"
crontab -l : list the crontabgrep '*' : keeps only rules (removing blank lines and comments)awk […] : print the whole line ($0), prepend by the 4th field (the month), the 3rd (the day), the 2nd (the hour) and the 1st (the minutes)sort -n : sort everything numerically, so that all tasks are now in their execution date order (I made awk seperate the fields with a , character so it keeps sorting numerically past the first number)date '+%-m : prints the current month, not zero padded (thanks to the ‘-’)grep -E '^date' : keep only lines which starts with the current month numberYou put that in a script (like ~/bin/upcoming_events) and you’re done. And then, you can call it from cron every monday get what’s coming next mailed to you. :)
This could but refined further to display dates in a more friendly format. But as usual, Unix is your friend. :)
I’m going to pass for the crazy person around, but so be it : cron.
Cron can be easily configured to send mails (MAILTO variable when using standard cron), provided sendmail is available on the system. If a command called by cron outputs anything, it will send a mail with the content, which is useful by itself to warn when something goes wrong with a cron task, but also allows to do things like this:
0 9 28 9 * echo birthday John
It’s really easy to get used to the syntax, it’s just going from more precise to less precise, so it’s “minute, hour, day, month, *”. The last one can usually be ignored (it’s the day of the week, I must have used it twice in my life). So here, “0 9 28 9”, you read it backward and it gives : September, 28th, 9:00. Piece of cake when you get a bit of practice. And cron is everywhere, so no need to install anything. Although, since I run it on my laptop, I use fcron, which has a nice feature to run ASAP tasks which should have ran if the computer was not shut down. This way, I never miss an alert.
I use it for recurring notes (like birthday, paperwork, house cleaning tasks, holidays, etc), but also as reminders of specific dates when I expect a delivery, have a meeting, etc. For the most important messages, I make it use a script that will make a destkop notification (with notify-send) and have a voice read the message (with mimic). And of course, I also use it to actually launch programs. :)
Thanks for the link!
Interesting. I’ve been using ARM cores for low energy for so long that I haven’t bother to look if things were changing. :) How does it perform on the heat dissipation front? Because if it requires a fan, this should be included in the energy consumed.
I assume it’s a x86 CPU, being an intel processor? How does it manage to be as energy efficient as an ARM CPU? Or maybe it’s only when it’s idle?
I do have to say for the purpose of tinkering I love these bigger projects because you learn so much on the way. Now having read your answer I am even more exited to try it out :D
That’s awesome to hear! Welcome, and have fun! :)
I haven’t heard of most of your abbreviations/term till now
Oh, my apologies. Here is a definition list :
I guess slapping it on my local raspberry pi wouldn’t be enough no?
Oh no, that would be way not enough. :) Managing a mailserver is a sysadmin task by itself. While you don’t need to do much once it works (which often is a perk of sysadmin work, compensating for the fact that when it does not work, they may have to wake in the middle of the night to fix it), it’s notoriously difficult to get right : you have the configuration of the mailserver to get right first, so that you can send emails, but nobody else can and you don’t become a spam relay without knowing it. Then you have a lot of configuration to do to be able to retrieve your emails from your server, which uses other protocols that you must learn about. Then you have “optional” things that you must setup (SPF, DKIM and DMARC), which you won’t be able to send mails to gmail or outlook if you don’t set them up properly. And when you will have got all of that right, you will have enough experience to be hired as a sysadmin. :)
I can’t provide a good resource for learning it, I learned it 15 years ago when it was way more simple (before SPF and DKIM), and picked every addition as they appeared, but any course on how to manage a mail system will do. There is no difference in doing it for your self-hosted server and for a company (except maybe that for a company, they’ll make you handle users in a database, which you can forego for your own needs). I would recommend to learn how to use postfix first, then any imap server (courier-imap is a top runner), and when you’re comfortable with that, you can learn about SPF, then DKIM, then DMARC. But be aware before going through it that this is basically learning a new skill (sysadmin). You can find docker images that setup everything automatically for you, but I would recommend against that, because at some point, things will break and you will have no idea how to fix them. And if you try to fix them while not knowing well what you’re doing, that’s a good way to end up being a spam relay. Plus, those docker images are difficult to customize, which quite defeats the point of managing your own mail system to begin with.
Well I didn’t want google to read my mails
Sadly, it only works if no one in the recipients of the mail is on gmail (or if everyone use pgp, which I would tend to think is even more rare).
I host my own mailserver as well, and I would add as benefits:
username+something@host). That also makes routing/filtering mails way more easy, you just have to match the recipient address.
That’s the same thing. :) If you reduce computing load, you reduce the need for costly hardware and you reduce the need for energy, thus you reduce the amount of money needed to build and run your setup. There’s a saying in (software) engineering : “reducing energy consumption and increasing performances requires the same optimizations”. Make your code faster (by itself, not by buffing up hardware) and it consumes less energy. Make your application simpler, and it will run faster, and it will consume less energy. It’s not an absolute truth (it sometimes happen that you make your code faster and it consumes more energy), but it’s true most of the time.