Check for missing files from installed APT packages.

check-missing-files.sh

#!/bin/bash

#This script checks for missing files, by scanning through lists of installed files in APT package list.
#Sometimes file is listed in APT .list file, but it's not installed by default, so you need to manually
#check if package needs reinstalling or if it's just a normal condition.
#Tested only on Ubuntu 15.04
#This is only very simple check. To test integrity of installed packages, use debsums.

IFS=$'\n'
for file in /var/lib/dpkg/info/*.list
do
	for line in $(cat $file)
	do
		#If you don't want to scan specific directory, modify this condition and uncomment following lines
		#if [[ $line ==  ]]
		#then
		#	:
		#else
			[ -e $line ] || echo "Not found: $line from package $(basename $file .list)"
		#fi
	done
done