sudo apt-get update shows unwanted sublime-text line every time

In Lubuntu 18.04.2 LTS, every time I run sudo apt-get update on the command line, there is a line displaying Hit:4 apt/dev/ InRelease.

shekhar@shekhar-desktop:~$ sudo apt-get update
Hit:1 apt/dev/ InRelease
Hit:2 bionic InRelease
Hit:3 bionic-updates InRelease
Get:4 bionic-backports InRelease [74.6 kB]
Get:5 bionic-security InRelease [88.7 kB]
Fetched 163 kB in 4s (43.0 kB/s)
Reading package lists... Done

I tried to install sublime-text and later deleted it because it required a license key.

Now when I run sudo apt-get upgrade, following is the result:-

shekhar@shekhar-desktop:~$ sudo apt-get upgrade
Reading package lists... Done
Building dependency tree
Reading state information... Done
Calculating upgrade... Done
The following packages have been kept back: linux-generic linux-headers-generic linux-image-generic
0 upgraded, 0 newly installed, 0 to remove and 3 not upgraded.

Please help.

1 Answer

Removing sublime from apt-get update

The first one is showing sublime ppas on apt-get update, if you wish to get rid of it—you have to remove the ppa.

sudo rm /etc/apt/sources.list.d/sublime-text.list

Assuming you followed the steps from sublime official download manual, then above command should suffice for only removing the ppa.

kernel have been kept back

Since kernel are core system packages and can seriously damage your system if the upgrade fails, this cannot be done with just upgrade, one should issue dist-upgrade to upgrade these kind of packages.

sudo apt-get dist-upgrade

This would effectively upgrade the kernel packages.