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HP Compaq 6720s disassembly, cleaning or replacing fan

Posted by: Ferenc Veres on December 17, 2022 07:23:01 PM +00:00

The best way to repair or replace parts of laptops, is to read the service manual. But if you prefer a more visual way, please read on.

Or just read the official HP Compaq 6720s Maintenance and Service Guide here.

Lensset - add vintage manual lens data to photos EXIF (shell script)

Posted by: Ferenc Veres on August 1, 2021 09:31:19 AM +00:00

This is a command line tool, tested on Linux only. Its use is quite hardcore, but maybe I'll improve that later on. Just wanted to publish finally, after using it for many years.

  • Shows or sets lens data in EXIF
  • Best used with old manual lenses that do not set the EXIF data.
  • Requires Exiv2 to manipulate EXIF!


Thoughts about e-mail - in 2020

Posted by: Ferenc Veres on January 3, 2020 02:38:18 PM +00:00

I've been reading Pine manual when found some interesting recommendations. So much interesting at time of writing, 1998 as of today in 2020 . Especially in today's world of privacy (or lack of thereof).

I'll quote a few things from Pine (Alpine) manual. My point is that people keep mails forever and I don't want my mails to stay in your mailbox forever. There is a period after they are not relevant. And that's very short for most of my e-mails. Your e-mails too. Consider deleting them and clearing Trash (referred as expunge in the article below).

How to adjust dates in photo EXIF headers (and copy to file date)

Posted by: Ferenc Veres on August 20, 2012 08:28:12 PM +00:00

Have you ever had the problem that your camera's date was misset or reset, so all your EXIF and file dates were broken?

In this case you need to adjust the date in several images and preferably alter the file date accordingly. This is much easier than you thought, two simple commands using Linux tool exiv2.


Fileclean: find unused files on your Mandriva Linux

Posted by: Ferenc Veres on August 28, 2005 09:09:33 PM +00:00

Ever wondered what extra files you might have on your harddisk, left there by once installed programs or deprecated packages left there by distro upgrades? Try this little script to hunt them down.

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Exisitng editors for text data DjVu files are quite limited, like for example DjVuSmooth. So I've implemented a new editor in JavaScript, that allows editing both the strucutre of the text (paragraphs, lines, words,...) and the coordinates of the text boxes by simply dragging with the mouse, features like create, delete, merge are also available.

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