SQL, Shell & Data Science

SQL, Bash/PowerShell, and scientific computing languages for analysis and ops.

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dev.to > arnostorg > powershell-set-content-write-text-to-files-fast-1dh4

PowerShell Set-Content: Write Text to Files Fast

48+ min ago   (256+ words) The PowerShell Set-Content cmdlet writes text into a file. It is the clear, readable way to create a new file or replace what is already there — cleaner than juggling > redirects when you want intentional writes in scripts. For the official…...


dev.to > arnostorg > powershell-add-content-append-text-to-files-fast-dag

PowerShell Add-Content: Append Text to Files Fast

48+ min ago   (236+ words) The PowerShell Add-Content cmdlet appends text to a file. Use it when you want to keep existing lines and add more — the opposite of Set-Content, which replaces the whole file. For the official reference, see Microsoft Learn’s Add-Content. Want to…...


dev.to > arnostorg > powershell-clear-content-empty-files-without-deleting-them-3e6p

PowerShell Clear-Content: Empty Files Without Deleting Them

48+ min ago   (327+ words) The PowerShell Clear-Content cmdlet empties a file’s contents but keeps the file itself. The path stays; the bytes go. That is the opposite of deleting the file, and different from rewriting it with new text. For the official reference, see…...


dev.to > arnostorg > powershell-measure-object-count-lines-and-sum-folder-sizes-in-one-line-2b8k

PowerShell Measure-Object: Count Lines and Sum Folder Sizes in One Line

48+ min ago   (356+ words) The PowerShell Measure-Object cmdlet turns a pile of output into a number. How many lines are in this log? How much disk does this folder eat? What's the average order total in this CSV? Instead of opening Excel or writing…...


dev.to > arnostorg > powershell-test-path-check-a-path-exists-before-you-act-3fn3

PowerShell Test-Path: Check a Path Exists Before You Act

48+ min ago   (270+ words) The PowerShell Test-Path cmdlet answers one question: does this path exist? Use it before you read, write, delete, or create — so your script fails early with a clear message instead of throwing midway through a longer job. For the official…...


dev.to > arnostorg > powershell-select-string-find-text-in-files-fast-3ll2

PowerShell Select-String: Find Text in Files Fast

49+ min ago   (345+ words) The PowerShell Select-String cmdlet finds text inside files — the same job grep does on Linux/macOS and findstr does in classic CMD. When you are hunting for an error code in logs, checking whether a config key exists, or scanning…...


medium.com > system-design-architecture-deep-dives > uuid-vs-ulid-vs-snowflake-id-which-to-use-in-spring-boot-4-measured-on-postgres-18-6f0004bd6313

UUIDv4 vs UUIDv7 vs ULID vs Snowflake in Spring Boot 4: Which ID to Use, Measured on Postgres 18

1+ hour, 8+ min ago   (147+ words) All four are unique enough. They differ in where their bits come from, and each source sends a bill later: 59% more WAL, an index two-thirds full, a JavaScript client that rounds your IDs. Here are four IDs for the same…...


dev.to > jsmanifest > nodejs-24-built-in-sqlite-replacing-better-sqlite3-in-scripts-and-edge-workers-without-a-native-2pj3

Node.js 24 Built-In SQLite: Replacing better-sqlite3 in Scripts and Edge Workers Without a Native Module

2+ hour, 6+ min ago   (1235+ words) This article was written with the assistance of AI, under human supervision and review. Most SQLite integration problems in Node.js stem from the gap between needing a simple embedded database and the friction of compiling native modules. Teams reach…...


dev.to > support24htrack > your-tracking-integration-needs-a-date-sanity-check-1n3b

Your tracking integration needs a date sanity check

3+ hour, 48+ min ago   (667+ words) Every tracking integration I have seen trusts one thing it should not: that the newest event attached to a tracking number describes the shipment you are looking at. Most of the time it does. Then a support ticket arrives saying…...


dev.to > chenyuan20509 > sqlite-wal-does-not-mean-unlimited-writers-a-practical-python-playbook-2lkn

SQLite WAL Does Not Mean Unlimited Writers: A Practical Python Playbook

4+ hour, 1+ min ago   (1303+ words) A small service can run happily on SQLite for months, then begin throwing database is locked as soon as two background workers start processing jobs. Switching to Write-Ahead Logging (WAL) often improves the situation, but it does not turn SQLite…...