By Greg Nowak , 12 August, 2026 Cloudflare Changed DoH JSON. What Else Is Parsing DNS as Text? Cloudflare’s DoH JSON change exposes brittle DNS parsing. Find affected scripts, test both formats, and choose a safer integration contract. Tags Cloudflare DNS API integration bash python
By Greg Nowak , 10 February, 2022 Delete Files and Folders Older Than X days find /[FOLDER_NAME]/* -mtime +[OLDER_THAN_DAYS] -exec rm -rf {} \; Example deletes all files and folders in tmp folder that are older than 180 days: find /tmp/* -mtime +180 -exec rm -rf {} \; Tags bash Script Linux
By Greg Nowak , 4 June, 2020 Converting PNG to SVG In a lot of cases it is useful to convert bitmaps like jpg, png to vector graphics like SVG or AI. Inkscape -> Path -> Trace Bitmap BASH convert file.png file.pnm potrace file.pnm -s -o file.svg Tags bash Script graphics
