$ sudo apt-get update

$ sudo apt-get dist-upgrade

명령어로 패키지 업데이트 시 아래와 같은 오류 발생

Setting up dpkg (1.21.1ubuntu2.1) ...
head: error reading 'info_silent': Is a directory
dpkg: error processing package dpkg (--configure):
 installed dpkg package post-installation script subprocess returned error exit status 1
Errors were encountered while processing:
 dpkg
E: Sub-process /usr/bin/dpkg returned an error code (1)

오류 해결 방법

sudo mv /var/lib/dpkg/info /var/lib/dpkg/info_silent
sudo mkdir /var/lib/dpkg/info
sudo apt-get update
sudo apt-get -f install
sudo mv /var/lib/dpkg/info/* /var/lib/dpkg/info_silent
sudo rm -rf /var/lib/dpkg/info
sudo mv /var/lib/dpkg/info_silent /var/lib/dpkg/info