Author Archives: mark

About mark

At work, been working on Tandems for around 30yrs (programming + sysadmin), plus AIX and Solaris sysadmin also thrown in during the last 20yrs; also about 5yrs on MVS (mainly operations and automation but also smp/e work). At home I have been using linux for decades. Programming background is commercially in TAL/COBOL/SCOBOL/C(Tandem); 370 assembler(MVS); C, perl and shell scripting in *nix; and Microsoft Macro Assembler(windows).

Is there a future for Docker ?

With Fedora no longer supporting Docker out-of-the-box (kernel changes are needed https://fedoraproject.org/wiki/Common_F31_bugs#Other_software_issues) and RHEL8 no longer supporting Docker (https://access.redhat.com/documentation/en-us/red_hat_enterprise_linux/8/html-single/building_running_and_managing_containers/index) one may wonder if Docker itself has a future. The reason RedHat give (in the link above) is that they wish … Continue reading

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An update on a couple of old posts

As you may recall I have posted earlier on installing snort as an intrusion detection system (IDS). And also an earlier post on dynamically adding firewall blacklist rules based upon traffic hitting my website based upon apache rewrite rules to … Continue reading

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Obtaining ethernet interface statistics under linux

The power surges and power outages hitting titahi bay in the last week adversely affected my main desktops ethernet card, all network connectivity died and th ethernet port status light became red instead of green. Swapped out the network switch … Continue reading

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An update on my conversion from Fedora30 to CentOS7; Bugzilla

As mentioned in my earlier post on

Posted in Unix | Comments Off on An update on my conversion from Fedora30 to CentOS7; Bugzilla

Off on a tangent again, WebAssembly

WebAssembly is now has official specifications published by W3C. Highlighted by this article on the register site. WebAssembly is a standard developed by the W3C WebAssembly Working Group. Today all modern browsers (Chrome, Firefox, Safari, Edge, mobile browsers) and Node.js … Continue reading

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An alternative to git, fossil a quick review

First a disclaimer, after reviewing fossil I will be remaining with git as my source control system. From a command line perspective it provides no benefits to me over git and while it can sync changes made in fossil to … Continue reading

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Using “screen” on Linux

The screen utility is available on most Linux systems, including Fedora, CentOS and RedHat. The history of screen is that it was an essential tool in the old days of dial-up access to servers, terminal sessions running under screen could … Continue reading

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Hackers, PCs of infected users, or researchers ?

There is an annoying amount of rubbish traffic to my website and below is a selected (grep’ed) portion of it. The documentation URL logged describes the masscan tool as similar to nmap, its purpose is to find open ports on … Continue reading

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Globally changing URLs in WordPress posts

Over the decades my WordPress site has had a few different URLs, and I thought I had managed to keep them all up to date as I changed sites. Using owasp-zap (under Kali) to test my site it did manage … Continue reading

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Converting a Fedora30 webserver to CentOS7

There are two supported versions of CentOS in the wild now. Note that I exclude CentOS6 as that is pretty much end of support now. So we have only versions 7 and 8 to play with. Version 7 is EOL … Continue reading

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