One thinks there’s only one problem, but then when one looks, here’s more than one. Here’s what needs to be done and what I have done before.
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sudo on raspbian
I have/had a problem; I suspect that my cron jobs were asking for permission to run which since they were batch programs is not the desired behaviour. I have done some googling, and think it maybe related to the sudoers file, i.e. additional command are needed. At the moment I have turned cron off and…
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Scripting on the raspberry pi
This post talks about scripting on raspbian. I have two problems, cron and privilege and running a java script …
Read moreInstalling ‘sar’ on Raspbian buster and Ubuntu 22.04 using systemd
The utility sar is part of the sysstat package. Note the double ‘s’. Most articles/documentation state that the jobs should be run using cron. On Raspbian buster and Ubuntu 22.04 this no longer works, the utilities work, but the historical database is not collected nor stored. These systems require that systemd run the collector.
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Linux Performance Monitoring
Today, sar, it seems is not part of the Debian distros, one needs to install the package sysstat.
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SSL on a Raspberry Pi
Installing an SSL certificate and enabling https was a faff, here are my notes. Now including postfix and dovecot…
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Raspbian on Virtual Box
I turned off my Raspberry Pi a couple of weeks ago, I was concerned about its energy draw. FFS. 😲 Also the projects I planned had stalled but like the No 11 bus, another one has come along, So I decided to install a Raspberry Pi in my virtual box instance. Here’s how …
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Event Monitoring
My recent problem with the Raspberry Pi is an event monitoring and notification problem. It’s one, that over my career, I have spent a lot of time considering, but today, I only have one server. I don’t think I need or want to afford something like Zabbix, which comes with a series of event monitors…
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Raspberry Pi and messages
I logged into find my disk too full to use. Why didn’t it tell me? Here are my notes.
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Raspberry Pi III
My third attempt to build a raspberry pi, it seemed easier to start a third page than refactor the last one. Here are my notes. I turned it off in August 22, and back on in Nov 2022. …
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Raspberry Pi and LVM
My NAS Box Fan has failed, I need to decide to repair or replace. One obvious answer is to use my “Pi” to serve out a pair of mirrored USB connected disks. How to do that on a PI? Here are my notes which I never implemented; basically I am using one of the cloud…
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Raspian & APT
This snip was originally created to document the arse-ache I had building my second Pi; it documented problems with Jesse & Stretch. The current release is Buster and so much of this content is deprecated. I amended this in Dec 2025 and in April 2020. I have moved deprecated content to the comments and updated…
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notify-send
Originally written in 2015, this post contains my notes on how to write messages to the screen. I started with ubuntu and then played with elementary and raspbian. WRT to raspian/raspberry pi OS, I had problems connecting it to the screen display, and at xmas 2025, I gave up and switched to zenity. notify-send may…
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My little mail server
What a pile of poo! I have access to four smtp servers and they all have limits on the distribution list size! (They are all about the same size of 100). Google will allow 2000 per list but only if you use one of their clients. Let’s try and bring up an SMTP server, connect…
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Virtual Box
This page has been live for a long time. Sun Microsystems bought Innotek the authors of Virtual Box, an opensource virtualisation product in 2008. It permits Windows/Linux/Solaris guests on the same operating system. I probably started this page slightly later, my first oracle blog on it was dated May 2008. It mainly describes any guest…
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