https://ukue.com/tags/command-line/ Recent content in Command Line on ukue.com Hugo en-us Tue, 06 Oct 2026 00:00:00 +0000 https://ukue.com/checking-300-websites-every-night-with-ukue-cron-and-a-shell-script/ Tue, 06 Oct 2026 00:00:00 +0000 https://ukue.com/checking-300-websites-every-night-with-ukue-cron-and-a-shell-script/ <p>Say a two-person web agency looks after 300 client websites. Each morning they want to know which sites were down overnight and which TLS certificates are close to expiring, before a client calls about it. Monitoring services do this for a monthly fee per site. The agency already has a Linux server, a text file of domains and a shell script that checks one site, and would rather not add anything bigger than that.</p> https://ukue.com/photo-upload-thumbnails-with-ukue-previews-first-print-sizes-when-the-cpu-is-free/ Tue, 06 Oct 2026 00:00:00 +0000 https://ukue.com/photo-upload-thumbnails-with-ukue-previews-first-print-sizes-when-the-cpu-is-free/ <p>Take a portfolio site where photographers upload full-size JPEGs after a shoot, a few hundred at a time and 20 or 30 megabytes each. Every photo needs three resized copies: a 400-pixel thumbnail for the gallery grid, a 1600-pixel version for the lightbox, and a 3000-pixel file for print orders. Resizing a big JPEG takes real CPU time, and doing it inside the upload request turns a 300-photo upload into a long wait behind a progress bar that seems stuck.</p>