Topic
#linux
3 posts
- A symlink is just a path, and that explains everything Why upgrading Python leaves two versions behind, why your venv breaks, why ln -sfn is safe on Linux but not on a Mac, and twelve more things a symlink can do to you. Every claim comes with output you can reproduce. 7 min read #systems#linux#filesystems
- Our computers don't really know what time it is A trip down the rabbit hole of quartz crystals, cesium atoms, GPS, NTP, and PTP, after chrony told me my clock was running slow. 2 min read #systems#time#ntp
- Most modern mail tooling is two binaries with a UI on top Configuring a multi-tenant mail server from scratch with Postfix and Dovecot, now handling 200k+ emails a day. 2 min read #postfix#smtp#imap