root@server ~ # apt purge linux-\*-4.15.0-24\*
Reading package lists... Done
Building dependency tree
Reading state information... Done
Note, selecting 'linux-headers-4.15.0-24-generic' for glob 'linux-*-4.15.0-24*'
Note, selecting 'linux-modules-extra-4.15.0-24-generic' for glob 'linux-*-4.15.0-24*'
Note, selecting 'linux-image-unsigned-4.15.0-24-generic' for glob 'linux-*-4.15.0-24*'
Note, selecting 'linux-modules-4.15.0-24-generic' for glob 'linux-*-4.15.0-24*'
Note, selecting 'linux-image-4.15.0-24-generic' for glob 'linux-*-4.15.0-24*'
Package 'linux-image-unsigned-4.15.0-24-generic' is not installed, so not removed
Package 'linux-headers-4.15.0-24-generic' is not installed, so not removed
The following package was automatically installed and is no longer required:
  thermald
Use 'apt autoremove' to remove it.
The following packages will be REMOVED:
  linux-image-4.15.0-24-generic* linux-image-generic-hwe-16.04* linux-modules-4.15.0-24-generic* linux-modules-extra-4.15.0-24-generic*
0 upgraded, 0 newly installed, 4 to remove and 0 not upgraded.
After this operation, 247 MB disk space will be freed.
Do you want to continue? [Y/n] y
(Reading database ... 206106 files and directories currently installed.)
Removing linux-image-generic-hwe-16.04 (4.15.0.24.46) ...
Removing linux-modules-extra-4.15.0-24-generic (4.15.0-24.26~16.04.1) ...
Purging configuration files for linux-modules-extra-4.15.0-24-generic (4.15.0-24.26~16.04.1) ...
Removing linux-image-4.15.0-24-generic (4.15.0-24.26~16.04.1) ...
I: /vmlinuz is now a symlink to boot/vmlinuz-4.13.0-43-generic
I: /initrd.img is now a symlink to boot/initrd.img-4.13.0-43-generic
/etc/kernel/postrm.d/initramfs-tools:
update-initramfs: Deleting /boot/initrd.img-4.15.0-24-generic
/etc/kernel/postrm.d/zz-update-grub:
Generating grub configuration file ...
grub-probe: warning: Couldn't find physical volume `(null)'. Some modules may be missing from core image..
/usr/sbin/grub-probe: warning: Couldn't find physical volume `(null)'. Some modules may be missing from core image..
/usr/sbin/grub-probe: warning: Couldn't find physical volume `(null)'. Some modules may be missing from core image..
/usr/sbin/grub-probe: warning: Couldn't find physical volume `(null)'. Some modules may be missing from core image..
/usr/sbin/grub-probe: warning: Couldn't find physical volume `(null)'. Some modules may be missing from core image..
Found linux image: /boot/vmlinuz-4.13.0-43-generic
Found initrd image: /boot/initrd.img-4.13.0-43-generic
/usr/sbin/grub-probe: warning: Couldn't find physical volume `(null)'. Some modules may be missing from core image..
/usr/sbin/grub-probe: warning: Couldn't find physical volume `(null)'. Some modules may be missing from core image..
/usr/sbin/grub-probe: warning: Couldn't find physical volume `(null)'. Some modules may be missing from core image..
/usr/sbin/grub-probe: warning: Couldn't find physical volume `(null)'. Some modules may be missing from core image..
done
Purging configuration files for linux-image-4.15.0-24-generic (4.15.0-24.26~16.04.1) ...
rmdir: failed to remove '/lib/modules/4.15.0-24-generic': Directory not empty
Removing linux-modules-4.15.0-24-generic (4.15.0-24.26~16.04.1) ...
Purging configuration files for linux-modules-4.15.0-24-generic (4.15.0-24.26~16.04.1) ...