Tag Archives: command line

Trace Route on MacOS via Spotlight Tutorial

A tool often used to diagnose DNS networking issues is a trace route. On a Windows command line that can be achieved by the command “tracert” and on macOS command line we can use “traceroute”. Today, though, we want to … Continue reading

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CentOS Exim Mail Server Sanity Check Testing Tutorial

To send an email often relies on a Mail Server and accompanying software and hardware and networking to support just such a Mail Server. Here at our Linux web server (CentOS) here at RJM Programming we oversee an Exim Mail … Continue reading

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Troubleshooting MySql Query Error Tutorial

Please see the parallels with the previous Troubleshooting Landing Page Crontab Curl Tutorial as we review a “same fix” “different symptom” regarding diskspace on our RJM Programming domain Apache/PHP/MySql web server … Let’s go over the symptoms found with our … Continue reading

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Troubleshooting CentOS Web Server Logfile Diskspace Issue Tutorial

When it comes to categorizing the nature of major issues maintaining our RJM Programming domain’s CentOS Linux web server it’s easy to tell you what is top of the list … diskspace … both concerning … inode limits (a Linux/Unix/macOS … Continue reading

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Windows File Server and File Sharing Inaccessible Troubleshooting Tutorial

Businesses and schools around the world benefitted from the invention of the networking idea of a file server as we discussed with the previous Windows File Server and File Sharing Primer Tutorial, and we’ll let Wikipedia explain below … The … Continue reading

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PHP Passthru Output Buffering Verb Tutorial

Yesterday’s PHP Passthru Output Buffering Security Tutorial set up a framework for our tightened “defence” of our “Passthru” (PHP) web application woooooooorrrrrrrrlllllld view, but there is scope, still, to improve the “offence”, a move which affects “defence” as well (wouldn’t … Continue reading

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PHP Passthru Output Buffering Security Tutorial

Serverside web applications (such as this current PHP one), more so than purely clientside web applications, are a bit like a lot of sports … there is the “offence” functionality side that provides a product or service to the user … Continue reading

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PHP Passthru Output Buffering Primer Tutorial

The PHP passthru command … Execute an external program and display raw output … is a good way for your underlying command line be expressed within a PHP web application executed in a web browser. But that “raw” above is … Continue reading

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