Comments on: How to Delete Old Unused Kernels in CentOS, RHEL and Fedora

By: Simon C

Simon C — Tue, 04 Feb 2025 16:03:32 +0000

The dnf command is incorrect, at least on RHEL 9. When I used your syntax, it returned lines including the current kernel. I had to change `-2` to return the correct details.

By: Johnny Kitchens

Johnny Kitchens — Sun, 27 Sep 2020 03:03:32 +0000

How to remove from boot menu old 5.8.7 and 5.8.9

By: jo

jo — Sat, 22 Feb 2020 22:51:55 +0000

In reply to Aaron Kili. but actually the only command working correctly is the one Michael provided.

# dnf remove $(rpm -qa | awk '/^kernel/' | grep -v $(uname -r))

By: disp

disp — Wed, 10 Apr 2019 15:47:30 +0000

Configuration file for dnf: /etc/dnf/dnf.conf.

By: noone

noone — Sat, 06 Jan 2018 07:17:07 +0000

In reply to noone. Actually,

# dnf repoquery --installonly --latest-limit=-1 -q

Does list the older kernel. It looks like =[nospace]-X is required for this to work in F27 at least, the wiki has no = and a space. Positive numbers go from new to old and negative numbers start at the oldest. My method above is longer but would allow you to pick random kernels for the keep list,

[root@hp1 ~]# dnf repoquery --installonly --latest-limit=-1 -q
kernel-0:4.14.8-300.fc27.x86_64
kernel-core-0:4.14.8-300.fc27.x86_64
kernel-devel-0:4.14.8-300.fc27.x86_64
kernel-modules-0:4.14.8-300.fc27.x86_64
kernel-modules-extra-0:4.14.8-300.fc27.x86_64
[root@hp1 ~]# dnf repoquery --installonly --latest-limit 2 -q
kernel-0:4.14.11-300.fc27.x86_64
kernel-0:4.14.8-300.fc27.x86_64
kernel-core-0:4.14.11-300.fc27.x86_64
kernel-core-0:4.14.8-300.fc27.x86_64
kernel-devel-0:4.14.11-300.fc27.x86_64
kernel-devel-0:4.14.8-300.fc27.x86_64
kernel-modules-0:4.14.11-300.fc27.x86_64
kernel-modules-0:4.14.8-300.fc27.x86_64
kernel-modules-extra-0:4.14.11-300.fc27.x86_64
kernel-modules-extra-0:4.14.8-300.fc27.x86_64

usage: dnf repoquery...