Some tricks in Linux I find useful
One thing I’ve faced recently was getting the list of packages installed in Ubuntu.
So to get a list of installed Debian/Ubuntu packages do
zalex:~# dpkg --get-selections adduser install apache deinstall apache-common install apache2-mpm-prefork install ...long list here...
To find out which package a file belongs to, do
zalex:~# dpkg -S /etc/php5/conf.d/pdo.ini php5-common: /etc/php5/conf.d/pdo.ini
that works even for directories:
zalex:~# dpkg -S /etc/php5/conf.d php5-gd, php5-sqlite, php5-common, php5-mysql: /etc/php5/conf.d
The same actually works for Debian, for example I still have a Debian VM.