sudo apt-get install package_name.deb

sudo apt-get install package_name.deb && apt-get install suspicious_file.deb

sudo add-apt-repository ppa:some/ppa
sudo apt-get update

deb http://ppa.launchpad.net/some-ppa/

deb http://ppa.launchpad.net/a_suspicious_some-ppa/

echo test;echo insert evil here;clear;echo installing package

stty -echo
tput smcup

stty -echo;tput smcup;echo evil commands
expected command

file("/var/log/cisco/cisco.log");

file(▒~@~/var/log/cisco/cisco.log▒~@~]);