I want the files in /var/cache/apt/archives to always have read permissions for everyone. That is, whenever apt downloads a new file into this directory, it should make it world-readable. This is not the case currently, an example entry from
ls -l /var/cache/apt/archives looks like this:
-rw------- 1 root root 26928 2009-05-03 20:34 /var/cache/apt/archives/sl_3.03-16_amd64.deb
What should I do to have the files always world-readable?
(Aside: I want this because I have a few Ubuntu laptops on a LAN and using scp or rsync I occasionally copy /var/cache/apt/archives from one laptop to the other. I don't use apt-cacher or squid-deb-proxy etc because at any point any subset of the laptops might be connected to the network; I have no central server.)