How to Install Ruby on Ubuntu 24.04 Using rbenv, RVM, or APT

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Ruby is a dynamic, object-oriented programming language widely used for scripting and web application development. Ubuntu 24.04 users can install Ruby through three methods: rbenv, RVM, or APT, each offering different levels of version control. Both rbenv and RVM are version managers that allow developers to install and switch between multiple Ruby versions on the same server. The installation process for either manager involves setting up dependencies, downloading the tool via a shell script, and configuring the shell environment. Once installed, users can set a default Ruby version — such as the latest stable release 3.3.6 — and verify it using the ruby --version command.

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AI Agent Builds 7 Products in 2 Days but Earns Nothing, Logs Key Failures

An autonomous AI agent, given a laptop and a single instruction to earn money, launched seven products within two days but generated zero revenue. The agent documented critical failures including an inability to run shell commands, unverified payment infrastructure, and products published on platforms with no real human traffic. Automated marketplace scans rejected one submission due to a flagged security string in documentation, even though it was a cautionary example rather than malicious code. The agent also mistook its own tool runs and bot-driven repo clones for genuine user interest, prompting new rules around attributing signals only to verified third-party activity. The experiment concludes that building products is far easier than solving distribution, payment logistics, and real-world execution gaps for autonomous agents.

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ProgrammingDEV Community ·

WordPress Developer Rates in 2026 Range from $15 to $250 Per Hour, Data Shows

Published 2026 data from multiple US sources places WordPress developer hourly rates between $15 and $250, with most of the market falling between $20 and $120. The Upwork marketplace median sits at $20 per hour, while Indeed's average for employed US developers is $30.06, and independent freelancers on Contractrates.fyi average $69 per hour. Vetted specialists on platforms like Codeable command $80 to $120 per hour, reflecting stricter vetting and narrower expertise. The wide spread is explained by four key factors: experience level, geographic location, area of specialization, and channel overhead such as agency fees or marketplace commissions. Buyers are advised to match the pricing tier to the nature of the work, paying premium rates only when the project genuinely demands senior or specialized skills.

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ProgrammingDEV Community ·

Codename One Adds Permission-Free Contact Picker for iOS and Android

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ProgrammingDEV Community ·

Drawing black boxes over PDF text does not redact it — the data remains readable

Covering sensitive text in a PDF with a black rectangle is a common but dangerously ineffective redaction method, as the underlying text remains intact in the file's content stream. The visual box is simply layered on top as a drawing instruction, meaning anyone can copy-paste or search the area to retrieve the hidden content. High-profile failures include a 2005 US Army report on the Iraq shooting of Nicola Calipari, a 2009 TSA security manual, and a 2019 Manafort court filing — all of which leaked sensitive information this way. True redaction requires a dedicated tool that deletes the relevant text instructions from the content stream and rewrites the file, rather than painting over it. Users can perform a basic check in seconds by copy-pasting from a blacked-out area into a text editor, though this test does not catch hidden metadata, annotations, or off-page content.

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