Correspondent
Dave Morriss
: 225
perloid.nospam@nospam.autistici.org
Old Geek, lives in Scotland, writes scripts and stuff for amusement
- Mastodon: @perloid@mastodon.sdf.org https://mastodon.sdf.org/@perloid
156
hpr4082 :: No swans at Swanston
MrX and Dave Morriss bring you more chit-chat from Edinburgh
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hpr4027 :: Today I learnt (2023-12-18)
Three random things I discovered in the recent past
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hpr4002 :: Today I learnt - 2023-11-24
Some odds and ends I learnt today
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hpr3985 :: Bash snippet - be careful when feeding data to loops
A loop in a pipeline runs in a subshell
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hpr3954 :: Sedating HPR at the Steading
MrX and Dave Morriss have lunch and record another chat
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hpr3911 :: An overview of the 'ack' command
A Perl-based 'grep'-like tool that can search by file type
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hpr3879 :: HPR at Hillend
MrX and Dave Morriss have lunch and record a chat
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hpr3836 :: Using 'zoxide', an alternative to 'cd'
Dave has been using 'zoxide' for a little while and really likes it
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hpr3829 :: The Edinburgh cohort of HPR hosts stops Mumbling!
Dave Morriss and MrX talk about various technical topics
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hpr3788 :: Nitecore Tube torch
I have owned one of these for many years and find it very useful
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hpr3753 :: Some thoughts on "Numeronyms"
AKA alphanumeric acronyms, alphanumeric abbreviations, or numerical contractions
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hpr3722 :: Bash snippet - plurals in messages
How to use English singular and plural words in messages
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hpr3713 :: Bash snippet - short-circuit evaluation in Bash Boolean expressions
Found I could do this in Bash, so wanted to share!
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hpr3702 :: Easter Ogg
From Scotland, another chat between MrX and Dave Morriss
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hpr3621 :: Watching YouTube in 2022
A few of the channels that distracted me through COVID-19 and beyond
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hpr3616 :: Filling free Slots from the Reserve Queue
You can now submit shows to the Reserve Queue for when free slots are not filled on time.
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hpr3608 :: Battling with English - part 5
Confused homophones; misunderstanding words from other countries; Eggcorns
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hpr3601 :: Re: The Worst Car I Ever Had
In the 1980's, out of ignorance, I bought a real dud of a car
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hpr3594 :: Peely-wally in Edinburgh
MrX and Dave Morriss chatting about this and that
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hpr3575 :: An Edinburgh Blether
MrX and Dave Morriss catching up after nearly a year
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hpr3564 :: Removing EXIF data from an image
An image might reveal data you want to keep private
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hpr3551 :: Bash snippet - some possibly helpful hints
Using 'eval', 'mapfile' and environment variables
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hpr3525 :: Battling with English - part 4
Some confusion with English plurals; strange language changes
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hpr3504 :: James Webb Space Telescope
Andrew and Dave watch the launch of the JWST
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hpr3445 :: True critical thinking seems to be the key
A response to HPR 3414
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hpr3413 :: Bash snippet - using coproc with SQLite
Sending multiple queries to a running instance of sqlite3
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hpr3386 :: What's for dinner?
Some scripts and a database for randomly choosing which meal to cook
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hpr3376 :: Making books with Linux - part 2
Part 2 of a discussion about how two HPR hosts create books
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hpr3312 :: COVID Doldrums
MrX and Dave Morriss have a chat over Mumble in these trying times
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hpr3197 :: Pens, pencils, paper and ink - 3
Looking at another batch of writing equipment
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hpr3182 :: Yo-ho-ho, and a bottle of Cholecalciferol
From Scotland, two HPR hosts chew the fat
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hpr3172 :: A ramble with the Pentland Squires (part 2)
Second half of the chat between MrX and Dave Morriss
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hpr3167 :: A ramble with the Pentland Squires (part 1)
MrX and Dave Morriss chat from opposite sides of the Pentland Hills, Edinburgh
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hpr3161 :: How I manage podcast listening
Another reply to MrX's episode on how he listens to podcasts
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hpr3152 :: My Pocket Knives
I talk a little about some pocket knives I often carry
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hpr3092 :: Pens, pencils, paper and ink - 2
Looking at more writing equipment
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hpr3083 :: Mumbling while on lockdown
Two Edinburgh-based hosts have a chat from their respective houses
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hpr3076 :: Keep calm and Virion
A COVID-19 lockdown chat from Scotland
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hpr3071 :: Bash snippet - quotes inside quoted strings
How to add quotes to quoted strings in Bash
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hpr3063 :: Pens, pencils, paper and ink - 1
Looking at a few more of my writing implements
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hpr3039 :: Making a Raspberry Pi status display
A project making use of my Pi 3A+, an old monitor and MagicMirror2
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hpr3013 :: Bash Tips - 21
Environment variables
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hpr3004 :: Fixing simple audio problems with Audacity
Sharing a few experiences with Audacity that may be helpful to others
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hpr2972 :: The foot of the ski slope
MrX and Dave Morriss chat about nerdy things near a ski slope
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hpr2968 :: Life and Times of a Geek part 3
Part 3 of my personal story of experiences with computers
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hpr2905 :: Two HPR hosts living in the same region finally meet up!
Dave Morriss and MrX meet up and record a conversation
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hpr2877 :: Using Zenity with Pdmenu
Zenity is a rather cool program that will display GTK+ dialogs from a script
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hpr2852 :: Gnu Awk - Part 16
Winding up the Gnu Awk series
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hpr2824 :: Gnu Awk - Part 15
Redirection of input and output - part 2
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hpr2816 :: Gnu Awk - Part 14
Redirection of input and output - part 1
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hpr2756 :: Bash Tips - 20
Deleting arrays; positional and special parameters in Bash
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hpr2751 :: Battling with English - part 3
Misunderstandings about English grammar, spelling, punctuation, etc.
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hpr2739 :: Bash Tips - 19
Arrays in Bash (part 4)
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hpr2736 :: Response to show 2720
Some suggestions on how to improve a Bash script
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hpr2729 :: Bash Tips - 18
Arrays in Bash (part 3)
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hpr2724 :: Using a DIN Rail to mount a Raspberry Pi
I created DIN rail fittings for attaching my RPi 3B+ and an SSD disk
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hpr2719 :: Bash Tips - 17
Arrays in Bash (part 2)
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hpr2709 :: Bash Tips - 16
Arrays in Bash (part 1)
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hpr2699 :: Bash Tips - 15
Some of the pitfalls when using loops in Bash
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hpr2689 :: Bash Tips - 14
More about loops - the 'for' loop, 'break' and 'continue'
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hpr2679 :: Extra ancillary Bash tips - 13
Making decisions in Bash (part 5)
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hpr2669 :: Additional ancillary Bash tips - 12
Making decisions in Bash (part 4)
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hpr2659 :: Further ancillary Bash tips - 11
Making decisions in Bash (part 3)
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hpr2649 :: More ancillary Bash tips - 10
Making decisions in Bash (part 2)
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hpr2639 :: Some ancillary Bash tips - 9
Making decisions in Bash (part 1)
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hpr2610 :: Gnu Awk - Part 12
Advanced use of arrays
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hpr2596 :: Battling with English - part 2
Misunderstandings about English grammar, spelling, punctuation, etc.
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hpr2581 :: My new 3D printer - impressions of the Creality Ender 3
I bought a Creality Ender 3 3D printer in June 2018. Here are my first impressions of it
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hpr2558 :: Battling with English - part 1
Misunderstandings about English grammar, spelling, punctuation, etc.
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hpr2544 :: How I prepared episode 2493: YouTube Subscriptions - update
In show 2493 I listed some of my YT subscriptions - here's how
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hpr2526 :: Gnu Awk - Part 10
More about arrays in Gnu Awk
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hpr2505 :: The power of GNU Readline - part 3
More useful key combinations
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hpr2496 :: Making a Raspberry Pi inventory
How to collect identifying information about RPi devices
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hpr2493 :: YouTube Subscriptions - update
Some of the YouTube channels I have subscribed to in the last year
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hpr2483 :: Useful Bash functions - part 4
A Bash function for parsing lists of numbers and ranges
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hpr2469 :: A flight itinerary in Bash
Working out dates and times in a Bash script
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hpr2453 :: The power of GNU Readline - part 2
Various ways of deleting and undeleting on the command line with GNU Readline
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hpr2448 :: Useful Bash functions - part 3
A few more possibly useful Bash functions are discussed
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hpr2443 :: pdmenu
I have been using this menu tool over the past year, and I really like it
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hpr2438 :: Gnu Awk - Part 8
More about loops
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hpr2397 :: The Urban Astronomer
An introduction to an astronomy podcast that you might like
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hpr2363 :: Cancelling my TV licence
I don't watch any TV so I don't need a licence, but cancelling it is unexpectedly difficult
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hpr2348 :: Vim Hints 005
Hints and Tips for Vim users - part 5
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hpr2339 :: Podcast list additions
Updates to my list of podcast feeds
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hpr2329 :: Building a Digital Clock Kit
I bought a self-build digital clock on eBay and document the building process
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hpr2317 :: Bash snippet - extglob and scp
How does scp manage extended glob patterns?
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hpr2302 :: Bash snippet - nullglob
After learning about the nullglob option I have started to use it
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hpr2297 :: More Magnatune Favourites
Andrew and Dave offer you some more tracks from Magnatune
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hpr2293 :: More supplementary Bash tips
Finishing off the subject of expansion in Bash (part 2)
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hpr2278 :: Some supplementary Bash tips
Finishing off the subject of expansion in Bash (part 1)
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hpr2270 :: Managing tags on HPR episodes - 3
Looking for the best way to store and manage tags in the HPR database, part 3
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hpr2260 :: Managing tags on HPR episodes - 2
Looking for the best way to store and manage tags in the HPR database, part 2
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hpr2255 :: The Good Ship HPR
HPR is a wonderful yet fragile project completely dependent on a steady flow of shows from hosts
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hpr2245 :: Managing tags on HPR episodes - 1
Looking for the best way to store and manage tags in the HPR database, part 1
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hpr2238 :: Gnu Awk - Part 6
Looking more deeply into Awk's regular expressions
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hpr2211 :: My podcast workflow
How I download, manage, listen to and delete podcasts
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hpr2202 :: Makers on YouTube
I am trying to learn to make various things and am watching YouTube to find information
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hpr2173 :: Driving a Blinkt! as an IoT device
I have a Raspberry Pi Zero with a Blinkt! 8-LED array I'm setting up as a notification device
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hpr2166 :: How to use a Slide Rule
By popular request, a description of how a slide rule works
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hpr2163 :: Gnu Awk - Part 4
Recapping the last episode and looking at variables in an Awk program
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hpr2135 :: Audio speedup script
I want to speed up some of my podcasts and truncate silence in them too so I wrote a script to do it
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hpr2129 :: Gnu Awk - Part 2
We examine how Awk works, records and fields, printing and program files
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hpr2116 :: Duffer Gardening
Prior to a Duffercast recording chalkahlom, inscius and I had a conversation about gardening
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hpr2109 :: Hacking my inner ear
How I discovered some new things about how my inner ear works and how to stop falling over
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hpr2096 :: Useful Bash functions - part 2
The further development of a Bash function that may be of use in your scripts
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hpr2093 :: GNU Health
I talk to my friend Tom and his collaborator Euan who are working on a project using GNU Health
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hpr2081 :: Fixing my daughter's laptop
My daughter broke the headphone jack in her laptop. I tried to get the remains out
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hpr2073 :: The power of GNU Readline - part 1
There's a lot you can do to speed up typing by using GNU Readline. We'll explore how in this series
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hpr2060 :: Introduction to sed - part 5
Finishing covering sed commands. Looking at some example scripts
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hpr2045 :: Some other Bash tips
Yet more information about types of expansion in Bash
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hpr2036 :: Glasgow Podcrawl 2016
Kevie and Dave invite you to the 2016 Glasgow Podcrawl
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hpr2023 :: Setting up my Raspberry Pi 3
I bought a RPi 3, a case, a heatsink and an SSD and have set the Pi up as a server
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hpr2011 :: Introduction to sed - part 4
How sed really works. Less frequently used sed commands
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hpr2007 :: My new laptop
I won an Entroware laptop at OggCamp 2015. I talk about it here
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hpr1997 :: Introduction to sed - part 3
Looking at some more sed commands than just s
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hpr1986 :: Introduction to sed - part 2
Some more about the GNU sed command
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hpr1976 :: Introduction to sed - part 1
What sed is and how to use it in a simple way
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hpr1971 :: BlinkStick
The BlinkStick is a small USB device with an RGB LED which you can build yourself
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hpr1951 :: Some additional Bash tips
More about expansion in Bash: this time arithmetic expansion
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hpr1946 :: Wok Cookery
I prepare a vegetarian version of Chow Mein for my son's visit
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hpr1941 :: What's in my case
I'm a fountain pen enthusiast; here's what's in my pen case
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hpr1938 :: How I prepare HPR shows
I use my own tools for preparing my HPR shows. I talk about them in this episode
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hpr1903 :: Some further Bash tips
Some more information about types of expansion in Bash
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hpr1884 :: Some more Bash tips
Some information about brace expansion in Bash that you might not know
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hpr1868 :: Glasgow Podcrawl review
The intrepid Glasgow Podcrawlers meet to discuss their experiences back in July
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hpr1864 :: Turning an old printer into a network printer
Using a Raspberry Pi as a print spooler for an old USB printer
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hpr1852 :: Operation Wallacea
I talk to my daughter about her recent trip to Indonesia
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hpr1843 :: Some Bash tips
A few useful Bash features that may not be well known
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hpr1827 :: How I make bread
I've been making my own bread for nearly 40 years, and I thought I'd share my methods
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hpr1822 :: Some tips on using ImageMagick
ImageMagick is an amazing toolkit for manipulating images. Here's how I use it
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hpr1816 :: Visualising HPR tags
Using GraphViz to visualise the tags on HPR episodes
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hpr1811 :: Life and Times of a Geek part 2
Part 2 of my personal story of experiences with computers
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hpr1777 :: Magnatune Favourites
Andrew and Dave talk about Magnatune and some of their favourite tracks
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hpr1776 :: Vim Hints 004
Hints and Tips for Vim users - part 4
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hpr1757 :: Useful Bash functions
Some Bash functions that may be of use in your scripts
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hpr1740 :: Mailing List Etiquette
Some advice about best practices on mailing lists
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hpr1734 :: Vim Hints 003
Hints and Tips for Vim users - part 3
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hpr1724 :: Vim Hints 002
Hints and Tips for Vim users - part 2
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hpr1714 :: Vim Hints 001
Hints and Tips for Vim users - part 1
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hpr1694 :: My APOD downloader
My simple Perl script to download the Astronomy Picture of the Day each day
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hpr1664 :: Life and Times of a Geek part 1
I've been using computers for more than 40 years. This is part 1 of my story
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hpr1656 :: My audio player collection
I describe the collection of audio players I use for listening to podcasts
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hpr1648 :: Bash parameter manipulation
A summary and aide memoire of Bash parameter expansion methods
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hpr1636 :: How I make coffee
I'm a great lover of coffee. This is how I make mine
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hpr1518 :: 02 The podcasts I listen to
I listen to a lot of podcasts and thought it might be interesting if I shared them on HPR
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hpr1516 :: 01 The podcasts I listen to
I listen to a lot of podcasts and thought it might be interesting if I shared them on HPR
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hpr1473 :: FOSDEM Discussion
Dave chats with his friend Tom about their experiences of FOSDEM 2014
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hpr1461 :: FOSDEM Keysigning Event
I wanted to get my GPG key signed so I joined the FOSDEM 2014 keysigning event
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hpr1362 :: Fixing a bad RSS feed
Perl scripts to modify broken RSS feeds on the fly
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hpr1303 :: A Music Pairing Under Unlikely Circumstances
Dave interviews Tim, his son, and Tim's friend John, who is visiting from the USA
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hpr1291 :: Parsing an ISO8601 formatted duration field with Perl
A step-by-step explanation of writing a regular expression in Perl to parse an ISO8601 time duration
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hpr1286 :: iCalendar Hacking
Creating iCalendar rules by hand and with a Perl script
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hpr1204 :: My Magnatune Downloader
How I download albums from Magnatune with Bash and Perl scripts
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hpr1148 :: Development Discussion
A discussion about the internals of the HPR scheduling system
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hpr1091 :: Useful Vim Plugins
Some of the Vim/gVim plugins I use and would like to recommend