hpr4184 :: Use GKRellM, wget and ImageMagick for a live slideshow

GKRellm can show live thumbnails. This script gets fresh data and types text on the images.

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Hosted by gemlog on Thursday, 2024-08-15 is flagged as Clean and is released under a CC-BY-SA license.
Tags: gkrellm, ImageMagick, linux, CommandLine, bash. Comments: 2.
The show is available on the Internet Archive at: https://archive.org/details/hpr4184

Listen in ogg, spx, or mp3 format. Play now:

Duration: 00:09:37

Part of the series: general.

This segment is about image magic and the GK Relim system monitor and highway web cameras.

The British Columbia HighwayCams website allows you to view highway conditions, traffic, and weather information at a glance.

GNU Wget is a free software package for retrieving files using HTTP, HTTPS, FTP and FTPS, the most widely used Internet protocols. It is a non-interactive commandline tool, so it may easily be called from scripts, cron jobs, terminals without X-Windows support, etc.

ImageMagick is a free, open-source software suite, used for editing and manipulating digital images. It can be used to create, edit, compose, or convert bitmap images, and supports a wide range of file formats, including JPEG, PNG, GIF, TIFF, and Ultra HDR.

GKrellM is a single process stack of system monitors which supports applying themes to match its appearance to your window manager, Gtk, or any other theme.

Here is how the thumbnails and my own GKrellM monitor look:

The bash script can be found here.

Links

• https://gemlog.gemlog.ca/
• https://images.drivebc.ca/bchighwaycam/pub/html/www/index-Northern.html
• https://www.gnu.org/software/wget/
• https://imagemagick.org/
• http://gkrellm.srcbox.net/

Comments

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Comment #1 posted on 2024-08-15 10:48:07 by George

png

Hi,

looks cool but I cannot get where do you make .png file what you use later?

all the best.
George

Comment #2 posted on 2024-08-15 23:23:46 by gemlog

re: png

Hi, it took me a sec to wonder "What png?", but I had taken a screenshot using KDE's Spectacle of the Dolphin file manager displaying large icons. Spectacle's default file format is png. Sorry about that. It never occurred to me that would be confusing. The image of the thumbnails, which are all jpg, and the image of the gkrellm stack, are all done using Spectacle and are not included in the segment at all.
Thank you for pointing that out to folks.

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