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How to use the string find() in C++ — step-by-step Programming tutorial on Progressive Robot

How to use the string find() in C++

URL: https://www.progressiverobot.com/string-find-c-plus-plus/ In this article, we'll take a look at how we can use String find() in C++. If we want to check whether a string contains another string, the std::string.find() method is very useful. Let's understand how we can use this method, with some examples! Syntax of String find() in C++ This method belongs […]

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Java Multithreading Concurrency Interview Questions and Answers — step-by-step Programming tutorial on Progressive Robot

Java Multithreading Concurrency Interview Questions and Answers

URL: https://www.progressiverobot.com/java-multithreading-concurrency-interview-questions-answers/ Today we will go through Java Multithreading Interview Questions and Answers. We will also look into Concurrency interview questions and answers because both multithreading and concurrency go hand in hand. Thread is one of the popular topics in java interview questions. Here I am listing down most of the important java multithreading interview […]

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How to Install Rust and Compile System Tools on RHEL 7 — step-by-step RHEL 7 tutorial on Progressive Robot

How to Install Rust and Compile System Tools on RHEL 7

How to Install Rust and Compile System Tools on RHEL 7 Rust is a systems programming language that offers memory safety without a garbage collector, making it an ideal choice for building high-performance command-line utilities, daemons, and system-level tools. On RHEL 7, the system compiler and C runtime are older, but Rust’s installer rustup sidesteps […]

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Oracle Linux 8 — virt:ol — vulnerability — patch and remediation guide — diagnosis and fix on Oracle Linux 8

Oracle Linux 8 — virt:ol — vulnerability — patch and remediation guide (ELSA-2020-2774)

🟠 High   ⏱ 15–60 min  Last verified: 22 April 2020 Affected versions: Oracle Linux 8 📖 ~4 min read  •  Source: ELSA advisory ELSA-2020-2774 Related CVEs: CVE-2019-20382 CVE-2020-8608 Table of contents Symptom & Impact Environment & Reproduction Root Cause Analysis Quick Triage Step-by-Step Diagnosis Solution – Primary Fix Solution – Alternative Approaches Verification & […]

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openSUSE Tumbleweed — lftp — vulnerability — patch and remediation guide — diagnosis and fix on openSUSE Tumbleweed

openSUSE Tumbleweed — lftp — vulnerability — 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-2019:1059-1 (see also SUSE bugzilla) Related CVEs: CVE-2018-10916 Upstream summary: It has been discovered that lftp up to and including version 4.8.3 does not properly sanitize remote file names, leading to a […]

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How To Optimize Apache Web Server Performance — step-by-step Linux tutorial on Progressive Robot

How To Optimize Apache Web Server Performance

Apache is an amazingly powerful and capable web server. In order to make initial setup as easy as possible, it comes with numerous modules pre-installed. This makes it a great choice for new projects when you need to quickly be productive, but as your site grows you may start to bump into performance problems. This tutorial will cover a few things you should do to optimize performance if you’re running Apache with your Django app.

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Oracle Linux 8 — python-lxml — vulnerability — patch and remediation guide — diagnosis and fix on Oracle Linux 8

Oracle Linux 8 — python-lxml — vulnerability — patch and remediation guide (ELSA-2021-1898)

🟡 Medium   ⏱ 10–30 min  Last verified: 22 April 2020 Affected versions: Oracle Linux 8 📖 ~4 min read  •  Source: ELSA advisory ELSA-2021-1898 Related CVEs: CVE-2020-27783 Table of contents Symptom & Impact Environment & Reproduction Root Cause Analysis Quick Triage Step-by-Step Diagnosis Solution – Primary Fix Solution – Alternative Approaches Verification & Acceptance […]

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Android External Storage - Read, Write, Save File — step-by-step DevOps tutorial on Progressive Robot

Android External Storage – Read, Write, Save File

Android external storage can be used to write and save data, read configuration files etc. This article is continuation of the [Android Internal Storage](/community/tutorials/android-internal-storage-example-tutorial) tutorial in the series of tutorials on structured data storage in android. Android External Storage External storage such as SD card can also store application data, there's no security enforced upon […]

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Common Problems 113600

Windows Server 2012 R2 — RID master pool exhaustion approaching: new objects refused soon — Fix & Prevention

🟠 High   ⏱ 5–30 min  Last verified: 21 April 2020 Affected versions: Windows Server 2012 R2 📖 ~2 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 […]

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