thunderbird (icedove on debian) and /tmp/ issue

Thunderbird has a flaw. When you open attachment directly from it, it
saves the file under /tmp/ with read permission to the world. Any other
users on the same machine can read it freely.

To fix this, you must set the tmp directory for thunderbird manually
like the line below.

$ TMP=~/tmp/.icedove icedove -P default -no-remote > /dev/null 1>&2 &

how to fix too many paragraphs issue with calibre converter

http://www.reddit.com/r/ebooks/comments/1hst5i/converting_pdf_to_mobi_in_calibre_getting_a_gap/

Telegram Secret Group Chat

Thanks to github and all the opensource developers. If you are a fan of
Telegram (https://www.telegram.org), now I maintain a workaround to have
Secret Group Chat on Telegram. You may get it from github. The link is
provided below.

https://github.com/unsigned-nerd/telegram-secret-group-chat