dpkg changes

• Get a list of recently installed packages
  • zcat -f /var/log/dpkg.log* | grep "\ install\ " | sort

• Get a list of recently upgraded packages
  • zcat -f /var/log/dpkg.log* | grep "\ upgrade\ " | sort

• Get a list of recently installed or upgraded packages
  • zcat -f /var/log/dpkg.log* | egrep "\ install\ |\ upgrade\ " | sort -nk1

See also

• dpkg, dpkg-query, update-alternatives, ar, debsums, dpkg -V, dpkg -S, dpkg -L, dpkg --configure -a, wajig, dpkg -i -E , dpkg --help, dpkg-source-gitarchive
• systemctl list-timers

https://linux.die.net/man/8/update-alternatives