Sandbox99 Chronicles

From My Sandbox to Yours — Practical IT Insights.

Understanding POSIX/Linux/macOS Environment Variables

by Jose Mendez | Published Aug 3, 2025 | Last updated on Aug 3, 2025 at 7:24AM | DevOps, IT Fundamentals

Introduction Environment variables are a foundational concept in POSIX-compliant operating systems such as Linux and macOS. Despite their simplicity, they play a critical role in system behavior, script execution, application configuration, and—most...

SMTP for Script Notifications: A Comparison of Self-Hosted and Online Services

by Jose Mendez | Published Aug 2, 2025 | Last updated on Aug 2, 2025 at 1:12PM | DevOps, Python Scripting

Email Notifications for Your Scripts Ever wondered if that long-running cron job actually finished? Or if your nightly backup script encountered an unexpected error? As IT professionals, we can't afford to be in the dark. We need our automated systems to communicate...

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Sandbox99 Chronicles

From My Sandbox to Yours — Practical IT Insights.

Understanding POSIX/Linux/macOS Environment Variables

SMTP for Script Notifications: A Comparison of Self-Hosted and Online Services

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