How Windows Helpdesk Skills Translate to Linux CLI User and Permission Management

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IT professionals moving from Windows Active Directory to Linux systems administration must learn equivalent command-line tools for managing file permissions and ownership. In Linux, access control is represented by a permission string covering three scopes — Owner, Group, and Others — visible when running the ls -l command. The chmod command replicates Windows ACL modifications, using numeric octal values to assign read, write, and execute rights to each scope. The chown command handles ownership transfers, useful during onboarding or cross-department transitions, much like reassigning AD object ownership. Practicing these commands in cloud-hosted sandbox environments is recommended to build hands-on familiarity without risk to live systems.

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US Supreme Court Just Blew Up EU-US Data Transfers

Article URL: https://noyb.eu/en/us-supreme-court-just-blew-eu-us-data-transfers Comments URL: https://news.ycombinator.com/item?id=48728740 Points: 4 # Comments: 0

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ProgrammingDEV Community ·

Five design rules that keep AI agents running reliably despite constant interruptions

Building long-running AI agents requires solving a core challenge: preserving meaningful state across frequent interruptions, reboots, or scheduled restarts that wipe working memory. The author recommends maintaining a single source-of-truth file, updated after every step, written as if the next reader has total amnesia. Before taking any action, the agent should re-verify real-world conditions rather than rely on remembered assumptions, since stale beliefs can corrupt ongoing work. Every action must also be designed to be safely repeatable, so an interruption mid-task results in a harmless retry rather than a broken state. Finally, work should be chunked into units small enough to complete within a single run, with outcomes persisted at each boundary so that being killed between steps carries no cost.

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ProgrammingDEV Community ·

NetZero Tool Auto-Generates Kubernetes Network Policies Using Go and eBPF

A developer has open-sourced NetZero, a zero-configuration tool written in Go and C that automates the creation of Kubernetes NetworkPolicy files for zero-trust environments. The tool addresses a common pain point where manually writing network policies often leads to missed dependencies and production outages. NetZero uses eBPF to hook into the Linux kernel at the socket-connection level, capturing outbound traffic metadata such as PID, destination IP, and port with minimal overhead. A Go-based user-space layer then enriches this raw data by querying the host's /proc filesystem and performing reverse DNS lookups to map IPs to stable domain names. After a test run completes, the tool aggregates the observed traffic and exports a ready-to-use Kubernetes YAML manifest reflecting actual runtime behavior.

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ProgrammingDEV Community ·

5 Python list behaviors that trip up developers in coding interviews

Python lists are among the first data structures developers learn, yet they remain a common source of errors in technical interviews and real-world coding. Key pitfalls include shallow copies sharing references to inner objects, the multiplication operator creating duplicate references rather than independent lists, and list.sort() returning None instead of a sorted list. Modifying a list while iterating over it can also cause elements to be silently skipped due to index shifting. Safer alternatives such as copy.deepcopy(), list comprehensions, and the built-in sorted() function help avoid these subtle bugs.

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