Fixing Docker 'permission denied' on docker.sock without sudo

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Running docker commands as a normal user can fail because the Docker socket at /var/run/docker.sock is owned by root and the docker group. The usual fix is to add the user to the docker group with usermod, though existing shells keep the old group list until the user logs out and back in or runs newgrp. If the docker group doesn't exist, it can be created and the daemon restarted so the socket picks up the group. Containers that mount the socket need the host's numeric group ID rather than the image's docker group name. The guide warns against chmod 666 on the socket, since docker group membership is effectively root-equivalent.

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Python check flags shifted columns and empty rows in PDF-extracted tables

PDF table extraction can look correct on screen yet fail downstream when merged cells shift columns, headers get read as data, or page breaks drop rows. The article presents a short pdfplumber-based script that runs right after extraction to check table structure. The check flags rows with inconsistent cell counts, fully empty rows, and headers that don't match an expected column list. It cannot detect well-formed values that are simply wrong, so the author suggests comparing totals against the source. For tables with merged headers, the author recommends explicit table_settings and running the check per header block.

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ProgrammingDEV Community ·

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ProgrammingDEV Community ·

Essay Argues AI Could Write Novels with Structures Beyond Human Cognition

An essay on DEV Community contends that the most interesting post-human literature would not simply be an AI-written novel but one whose structure no human mind could conceive. It notes that human readers and writers are limited in how many characters, plot threads, and themes they can track at once, while a novel could in principle involve thousands of interlinked characters and multidimensional plot constraints. The author distinguishes three senses of impossibility for such a structure: combinatorial, cognitive, and aesthetic. The piece says the first is already achievable with AI, while the others remain frontier and speculative goals. It also challenges the assumption that literature must center on human experience.

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Engineering a Site Model Pipeline Across Five Tools Hinges on Shared Control Points

The article argues that site modeling teams should evaluate the workflow between tools rather than their individual features. It stresses that every project must establish a fixed control point, with datum, coordinate system, and units defined, so separately produced models can be combined. GenAnywhere is described as producing terrain surfaces that keep their identity through edits, which allows grading studies to be versioned inputs. MicroStation is presented as the authoritative geometry store that enforces standards and records changes for auditability. The piece highlights concurrency as the main challenge for CityWeft, where multiple authors edit scenario layers simultaneously.

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