How to Find Standard Deviation in R?
Learn how to find standard deviation in R with sd(). Covers sample vs population SD, dplyr group stats, and examples. Try the code now.
SLES 15 — bash — multiple vulnerabilities (8 CVEs) — patch and remediation guide
🟠 High ⏱ 15–60 min Last verified: 3 October 2019 Affected versions: SLES 15 📖 ~4 min read • Source: SUSE advisory SUSE-SU-2014:1212-1 (see also SUSE bugzilla) Related CVEs: CVE-2014-6271 CVE-2014-6277 CVE-2014-6278 CVE-2014-7169 CVE-2014-7186 CVE-2014-7187 CVE-2016-9401 CVE-2014-2524 Upstream summary: GNU Bash through 4.3 processes trailing strings after function definitions in the values of environment […]
Command Design Pattern
Command Pattern is one of the Behavioral Design Pattern. Command design pattern is used to implement loose coupling in a request-response model. Command Pattern  In command pattern, the request is send to the invoker and invoker pass it to the encapsulated command object. Command object passes the request to the […]
How To Build Maps in Angular with Leaflet, Part 1: Generating Maps
Learn how to build dynamic and stylish maps in Angular using Leaflet.
Ubuntu 18.04 Time Sync Drift Causes TLS and Login Issues
🟡 Medium ⏱ 5–30 min Last verified: 2 October 2019 📖 ~1 min read Table of contents Symptom & Impact Environment & Reproduction Root Cause Analysis Quick Triage Step-by-Step Diagnosis Solution – Primary Fix Solution – Alternative Approaches Verification & Acceptance Criteria Rollback Plan Prevention & Hardening Related Errors & Cross-Refs References & Further […]
Excessive journal logs consume storage
🟡 Medium ⏱ 5–30 min Last verified: 2 October 2019 📖 ~1 min read Table of contents Symptom & Impact Environment & Reproduction Root Cause Analysis Quick Triage Step-by-Step Diagnosis Solution – Primary Fix Solution – Alternative Approaches Verification & Acceptance Criteria Rollback Plan Prevention & Hardening Related Errors & Cross-Refs References & Further […]
openSUSE Tumbleweed — netdata — multiple vulnerabilities (4 CVEs) — patch and remediation guide
🟡 Medium ⏱ 10–30 min Last verified: 25 May 2026 Affected versions: openSUSE Tumbleweed 📖 ~4 min read • Source: SUSE advisory openSUSE-SU-2021:0647-1 (see also SUSE bugzilla) Related CVEs: CVE-2018-18836 CVE-2018-18837 CVE-2018-18838 CVE-2018-18839 Upstream summary: An issue was discovered in Netdata 1.10.0. JSON injection exists via the api/v1/data tqx parameter because of web_client_api_request_v1_data in […]
How to Set Up GlusterFS on SLES 12
Introduction This tutorial covers How to Set Up GlusterFS on SLES 12 on SLES 12. SLES 12 (SUSE Linux Enterprise Server 16) is SUSE’s enterprise-grade Linux distribution. It uses the zypper package manager, AppArmor for mandatory access control, and systemctl for service management. Prerequisites Ensure your SLES 12 system is up to date: zypper refresh […]
Windows Server 2019 — WSUS synchronization fails with SSL trust chain errors — Fix & Prevention
🟡 Medium ⏱ 5–30 min Last verified: 2 October 2019 Affected versions: Windows Server 2019 📖 ~1 min read Table of contents Symptom & Impact Environment & Reproduction Root Cause Analysis Quick Triage Step-by-Step Diagnosis Solution — Primary Fix Solution — Alternative Approaches Verification & Acceptance Criteria Rollback Plan Prevention & Hardening Related Errors […]
Understanding Map and Set Objects in JavaScript
Introduced in ECMAScript 2015, Maps in JavaScript are ordered collections of key/value pairs, and Sets are collections of unique values. In this article, you will go over the Map and Set objects, what makes them similar or different to Objects and Arrays, the properties and methods available to them, and examples of some practical uses.
