Έτρεξα το kitchensync για συγχρονισμό του kaddressbook με το κινητό μου. Αμέσως μετά όταν ξεκινούσα εφαρμογές χρησιμοποιούσαν το kaddressbook ήθελαν εκατοντάδες megabytes RAM στο startup τους σε βαθμο το PC μου με 2GB RAM να σέρνεται.
Μετά απο αρκετή ώρα αναζήτησης (δεν ήξερα οτι είναι το kaddressbook αρχικά) ανακάλυψα οτι το ~/.kde/share/apps/kabc είναι περίπου 800MB. (με 99 επαφές μονο).
Έκανα export σε CSV το addressbook , μετονομασία του kabc σε kabc_old και improt απο το CSV. problem solved. Όμως είναι ένα bug που ένας όχι τόσο σχετικός χρήστης δεν θα το έβρισκε ποτέ.
For a friend’s project, i investigated various ways to generate a site thumbnail.
The obvious one is to simply go to the desired website using your favorite browser, take a snapshot using your favorite program. Guaranteed to work :).
For obvious reasons that never became a real option so my googling revealed various services that do this. Some do it for free but in a limited manner , other are pay services but i was not satisfied with their options (or having to pay). The most famous of them is probably Alexa Site Thumbnails (AST) that is an Amazon web service. I didn’t like it either, especially since according to their terms you can’t store the image , but are only allowed to cache it up to 24 hours. Not good enough for me. (It’s dirt cheap though).
After a little more searching i found out about the fantastic khtml2png utility. What this does is use khtml libs (from kde3.x) to render a site into a png (and a lot of other image types).
The catch is that it requires an X server, but on their project page they have instructions to run it on a headless machine using Xvfb (an X server running on a virtual frame buffer).
It’s really easy:
On my machine i did:
Xvfb :1 -screen 0 1600x1200x24&
export DISPLAY="localhost:1.0"
khtml2png2 --width 1280 --height 1024 http://slashdot.org slashdot.png
And that’s it! I can now turn a headless Pentium III i have running various services (mail etc) to my own private , highly configurable web snapshot service.