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#FreeSoftwareAdvent

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    Today in #FreeSoftwareAdvent, it's pf(4)Having lived through several iterations of firewall management tools on Linux (and FreeBSD offers both IPFW, IPFilter, and pf in the base system), I've come appreciate the simplicity and declarative nature of pf.conf for my firewall management.The only downside is the quirky syntax of pfctl(8) but I do like being able to run my rules through it to sanity-check them from vi/ed with:w !pfctl -nvf -before installing them.
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    Today in #FreeSoftwareAdvent, I want to appreciate OfflineIMAP/mbsync. Both have served me well for bringing a remote IMAP mailbox locally and keeping it in sync across multiple machines, allowing me to mow through mail even when offline, and then have reasonable confidence that everything will just sync back up when I go online again.
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    Today's #FreeSoftwareAdvent entry: ledger(1) & hledger(1)I primarily use ledger use for my #plaintextaccounting purposes¹ but try to mostly keep my data-files in a form that hledger can process them too.Getting started involved a crash-course in accounting terms, but the use of positive/negative numbers (rather than "debits" and "credits" which always bugged me; though both have ways of specifying that output should be in credit/debit format) eased the transition.While it started a little tedious, a few helper-scripts and shell-functions simplified adding new common entries and gave me lazy access to common reports.I still struggle a little bit with closing the books (I though I'd figured it out, and documented it², but had some hiccups so I'll need to revisit my documentation in January)But it's been incredibly helpful to see and track our household net worth, spot trends, keep tabs on gift-card balances that would otherwise get forgotten, track invoices sent to clients, and it simplifies balancing the checkbook monthly.⸻¹ http://plaintextaccounting.org/² https://blog.thechases.com/posts/closing-out-the-books-in-ledger/
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    Kicking off #FreeSoftwareAdvent (thanks, @neil), I'll open with remind(1)While it took several articles and a couple attempts before I switched over to using it, once you taste the power of what it can do, it's hard to go back to less-capable calendaring tools.While the classic "garbage day is on Thursday unless there was a holiday earlier in the week, in which case it moves back to Friday" scenario is a nice little demo of its power, one of the best examples from my daily use is the kids' school calendars:• the teen has an A/B schedule which doesn't mesh nicely with calendar days, week-days, etc• similarly, our elementary-age kiddo has a 4-day cycle schedule for her "specials" classBut remind's nonomitted() function makes quick work of both of those, taking into consideration weekends, the school holidays, and using PUSH/POP directives for high-school testing days that impact his A/B schedule but not her 4-day cycle. I've never encountered another calendar that handled all the edge-cases with so little effort.It's a little rocky interchanging with other calendars (you have to use rem2ics to create .ics files to share, and pulling in others' iCal is non-trivial and doesn't seem to maintain the fidelity of remote events).But otherwise, this runs a great deal of my life schedule.