I ssh into aws ec2. After that I root:
Okay so I want to update ubuntu vm:
apt update apt upgrade
Calculating upgrade... Done The following packages were automatically installed and are no longer required: linux-headers-4.15.0-45 linux-headers-4.15.0-45-generic linux-image-4.15.0-45-generic linux-modules-4.15.0-45-generic linux-modules-extra-4.15.0-45-generic Use 'apt autoremove' to remove them. 0 upgraded, 0 newly installed, 0 to remove and 0 not upgraded.
So what do you mean “automatically installed and are no longer required:”? Is it safe to remove those kernel and if so how do we do it on Ubuntu Linux?