<html><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8" /></head><body style='font-size: 10pt; font-family: Verdana,Geneva,sans-serif'> I will add some points here because they may not be obvious. Most unix file systems do not keep track of file creation time (there is a good description in the man pages at https://man.archlinux.org/man/inode.7.en), so the time stamps for files in Cuis is not really what you might expect when you are running on a Linux system. Also, on Windows the time stamps associated with files follow a different model. I think that the Windows model is more closely aligned with what we have in Cuis, possibly because the first VMs for Squeak were written by Andreas Raab for Windows. Most of the time this does not matter very much, but it does mean that writing a portable implementation for moving files within file systems is not nearly as simple as it sounds. If you need a quick solution to the problem, then using OSProcess to run /usr/bin/mv on Linux is a reasonable thing to do. But it does require having OSProcess and SqueakCompatibility installed in your image, so I don't know if that would be good for DrGeo. Dave <div id="signature"></div> On 2026-09-15 12:28, Juan Vuletich via Cuis-dev wrote: <blockquote type="cite" style="padding: 0 0.4em; border-left: #1010ff 2px solid; margin: 0"> <div id="replybody1"> Right. I guess a new primitive in FilePlugin would be needed to preserve it. As an alternative, it may be possible to ask OSProcess to run a copy OS command. HTH, <div class="v1moz-cite-prefix">On 2026-09-13 5:32 AM, Hilaire Fernandes via Cuis-dev wrote:</div> <blockquote type="cite" style="padding: 0 0.4em; border-left: #1010ff 2px solid; margin: 0"> Hi, I am observing the #copy:to: message does not preserve the creation and modification times of the copied file. If you do the same operation from your host filing system, these attributes are preserved. When examining the code of the copy:to: method, Cuis really loads and saves the data from one file to the destination. Hilaire <pre class="v1moz-signature">-- <a class="v1moz-txt-link-freetext" href="http://mamot.fr/@drgeo" target="_blank" rel="noopener noreferrer">http://mamot.fr/@drgeo</a></pre> <fieldset class="v1moz-mime-attachment-header"></fieldset></blockquote> <pre class="v1moz-signature">-- Juan Vuletich <a class="v1moz-txt-link-abbreviated" href="http://www.cuis.st" target="_blank" rel="noopener noreferrer">www.cuis.st</a> github.com/jvuletich researchgate.net/profile/Juan-Vuletich independent.academia.edu/JuanVuletich patents.justia.com/inventor/juan-manuel-vuletich</pre> </div> <div class="pre" style="margin: 0; padding: 0; font-family: monospace"> </div> </blockquote> </body></html>