Notes on various subjects, mostly regarding IT technology and security.
Visit notes.volution.ro → RSS feedOn Hacker News Mar 2022 – Jun 2025
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In support of software packages that come in the form of a single binary executable (statically linked or portable), that one can just copy anywhere in `${PATH}` and execute, without needing `sudo`, or downloading half the distribution's packages as dependencies.
About the fatal perils and traps of many modern tools that handle "shell commands" as passed through `system(3)` or `sh -c`. Or, how by the end of 2020, we still haven't given up on shell's equivalent "SQL building", or how shell's equivalent "SQL injection" still thrives in our engineering world... Plus a `glibc`…
About the many types of hash functions, their use-cases, dos and don'ts, with suggestions for currently accepted algorithms.