Ubuntu Notes

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update meta data:

sudo apt-get update
sudo apt-get autoclean
sudo apt-get clean
sudo apt-get autoremove
apt-cache search keyword

list stuff that could be upgraded ( analogy: yum check-updates):

apt list --upgradable 


apt list --installed
apt-get install --only-upgrade fail2ban

want all , including kernel?

apt-get dist-upgrade  --dry-run


apt list --upgradable 
apt-get install --only-upgrade

debsums

checking the integrity of packages;

https://blog.sleeplessbeastie.eu/2015/03/02/how-to-verify-installed-packages/

kernel update

sudo update-initramfs -u -k 1.2.3-generic ( example )

then

sudo update-grub