docker logs container
docker logs --tail 100 container
docker logs -f container
dejurin
/ server-snapshot.sh
Created
September 25, 2025 18:47
Small, dependency-light Linux server snapshot tool for quick health checks. Prints host info, time, load, CPU/memory/disk, basic I/O & network stats, TCP summary, top processes, and (optionally) Docker usage. Safe to run as non-root; gracefully degrades when tools are missing.
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| #!/usr/bin/env bash | |
| # server-snapshot.sh | |
| # Purpose: Print a concise, human-readable snapshot of a Linux server state. | |
| # Safe defaults: exits on errors/undefined vars; degrades when optional tools are missing. | |
| # Intended usage: run manually or via cron; pipe to file for later inspection. | |
| set -euo pipefail | |
| # Ensure predictable output regardless of system locale | |
| export LC_ALL=C |
dejurin
/ update_cloudflare_ips.py
Created
September 11, 2025 08:07
Python Script for Updating Cloudflare IPs in Nginx Configuration
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| import requests | |
| import os | |
| def fetch_cloudflare_ips(): | |
| url = "https://www.cloudflare.com/ips-v4/" | |
| response = requests.get(url) | |
| if response.status_code == 200: | |
| return response.text.strip().split("\n") | |
| else: | |
| raise Exception(f"Failed to fetch Cloudflare IPs: {response.status_code}") |
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| // Variant type for clarity | |
| type TZVariant = { | |
| name: string; // Human-readable timezone name | |
| iana: string[]; // One or more IANA zones (first is canonical) | |
| note?: string; // Optional note (DST/legacy/unofficial/etc.) | |
| }; | |
| // Map: Abbreviation -> possible variants | |
| export const TZ_MAP_PART_A: Record<string, TZVariant[]> = { | |
| // Military letter zone. Note the inverted sign in Etc/GMT*: Etc/GMT-1 === UTC+1 |
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| // Early Hints | |
| app.Use(func(c *fiber.Ctx) error { | |
| if c.Method() != fiber.MethodGet || | |
| !strings.Contains(c.Get("Accept", ""), "text/html") { | |
| return c.Next() | |
| } | |
| for _, entry := range Manifest { | |
| switch ext := strings.ToLower(filepath.Ext(entry.File)); ext { | |
| case ".js": | |
| c.Append("Link", fmt.Sprintf("</%s>; rel=preload; as=script", entry.File)) |
dejurin
/ pretty-number.ts
Created
April 24, 2025 17:42
A lightweight, DRY wrapper for Intl.NumberFormat with built-in formatter caching and flexible options.
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| /** | |
| * Formatting options for prettyNumber. | |
| * Extends all standard Intl.NumberFormatOptions and adds an optional locale override. | |
| */ | |
| export interface PrettyNumberOptions extends Intl.NumberFormatOptions { | |
| /** BCP 47 language tag, e.g. 'en-US', 'ru-RU'. Defaults to 'en-US'. */ | |
| locale?: string; | |
| } | |
| /** Cache key → Intl.NumberFormat instance */ |
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| #!/usr/bin/env python3 | |
| import re | |
| import csv | |
| import unicodedata2 | |
| import urllib.request | |
| EMOJI_TEST_URL = 'https://unicode.org/Public/emoji/latest/emoji-test.txt' | |
| MIN_CHAR = 0x20 | |
| MAX_CHAR = 0x100000 | |
| OUTPUT_CSV = 'unicode.csv' |
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| @utility scrollbar-hide { | |
| -ms-overflow-style: none; | |
| scrollbar-width: none; | |
| &::-webkit-scrollbar { | |
| display: none; | |
| } | |
| } |
dejurin
/ jsdelivr.ts
Created
April 17, 2025 11:34
Convert various source URLs (GitHub, npm, unpkg, WordPress) to jsDelivr CDN URLs.
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| /** | |
| * Convert various source URLs (GitHub, npm, unpkg, WordPress) to jsDelivr CDN URLs. | |
| * @param sourceUrl — the original file URL | |
| * @returns jsDelivr URL or null if the format is not recognized | |
| */ | |
| export function toJsDelivr(sourceUrl: string): string | null { | |
| const url = new URL(sourceUrl); | |
| const { hostname, pathname, searchParams } = url; | |
| // GitHub: handle both github.com/blob/... and raw.githubusercontent.com |
dejurin
/ use-on-click-outside.ts
Created
April 14, 2025 19:18
Custom hook that calls handler when a click is detected outside of the given ref element
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| import { useEffect } from "preact/hooks"; | |
| // Custom hook that calls handler when a click is detected outside of the given ref element | |
| const useOnClickOutside = ( | |
| ref: { current: HTMLElement | null }, | |
| handler: (event: MouseEvent | TouchEvent) => void | |
| ) => { | |
| useEffect(() => { | |
| // Listener that calls handler if click is outside of ref element | |
| const listener = (event: MouseEvent | TouchEvent) => { |
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