Message-Id: <20191017063126.2005-1-unixbhaskar@gmail.com>
Date:   Thu, 17 Oct 2019 12:01:26 +0530
From:   Bhaskar Chowdhury <unixbhaskar@...il.com>
To:     yamada.masahiro@...ionext.com, michal.lkml@...kovi.net
Cc:     rdunlap@...radead.org, bfields@...ldses.org,
        linux-kbuild@...r.kernel.org, linux-kernel@...r.kernel.org,
        Bhaskar Chowdhury <unixbhaskar@...il.com>
Subject: [PATCH] scripts : prune-kernel : prune kernels generalized way

This patch will remove old kernel from the system in a selective way.

Signed-off-by: Bhaskar Chowdhury <unixbhaskar@...il.com>
---
For Randy :
✔ ~/git-linux/linux-kbuild [master|AM/REBASE ↑·8|✔]
11:42 $ ./scripts/checkpatch.pl -f
scripts/0001-Fix-all-the-concern-raised-by-Randy.patch
total: 0 errors, 0 warnings, 93 lines checked

scripts/0001-Fix-all-the-concern-raised-by-Randy.patch has no obvious
style problems and is ready for submission.

scripts/prune-kernel | 75 ++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 75 insertions(+)

diff --git a/scripts/prune-kernel b/scripts/prune-kernel
index e69de29bb2d1..9461ae2bc122 100755
--- a/scripts/prune-kernel
+++ b/scripts/prune-kernel
@@ -0,0 +1,75 @@
+#!/bin/bash
+# SPDX-License-Identifier: GPL-2.0
+
+# because I use CONFIG_LOCALVERSION_AUTO, not the same version again and
+# again, /boot and /lib/modules/ eventually fill up.
+# Dumb script to purge that stuff:
+
+#for f in "$@"
+#do
+#        if rpm -qf "/lib/modules/$f" >/dev/null; then
+#                echo "keeping $f (installed from rpm)"
+#        elif [ $(uname -r) = "$f" ]; then
+#                echo "keeping $f (running kernel) "
+#        else
+#                echo "removing $f"
+#                rm -f "/boot/initramfs-$f.img" "/boot/System.map-$f"
+#                rm -f "/boot/vmlinuz-$f"   "/boot/config-$f"
+#                rm -rf "/lib/modules/$f"
+#                new-kernel-pkg --remove $f
+#        fi
+#done
+boot_dir=/boot
+modules_dir=/lib/modules
+function remove_old_kernel(){
+	cd $boot_dir
+	rm -If vmlinuz-$kernel_version System.map-$kernel_version config-$kernel_verison
+}
+function remove_old_kernel_modules_dir(){
+	cd $modules_dir
+	rm -rf $modules_version
+}
+printf "\n\n Enlist the installed kernels \n\n"
+
+find $boot_dir -name "vmlinuz-*" -type f  -exec ls -1 {} \;
+
+printf "\n\n\n Please give the kernel version to remove: %s"
+read kernel_version
+if [[ $kernel_version -eq "" ]];then
+	printf "You have forgotten the version to give for removal"
+	exit 1
+else
+        remove_old_kernel
+fi
+
+printf "\n\n Enlist the installed modules directory \n\n"
+
+find $modules_dir  -maxdepth 0 -type d -exec ls -1 {} \;
+
+printf "\n\n Please give the full modules directory name to remove: %s"
+read modules_version
+if [[ $modules_version -eq "" ]];then
+	printf "You have forgotten to give the modules dir to remove"
+else
+        remove_old_kernel_modules_dir
+fi
+
+printf "\n\n Removed kernel version: $kernel_version and associated modules: $modules_version ...Done \n"
+while :
+  do
+     printf "\n\n Do you want to remove another?[YN] : %s"
+     read response
+
+       if [[ $response == "Y" ]];then
+	printf "Please give another version to remove : %s"
+	read kernel_version
+	remove_old_kernel
+	printf "\n\n Please give the full modules directory name to remove: %s"
+	read modules_version
+	remove_old_kernel_modules_dir
+        printf "\n\n Removed kernel version: $kernel_version and associated modules: $modules_version ...Done \n"
+
+      elif [[ $response == "N" ]];then
+	   exit 1
+      fi
+  done
--
2.21.0

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