remove-old-kernels: Simplify removal version selection logic

'rpmevrcmp' is not needed since we don't output epoch there, thus simple version
sort with `sort -V` is enough.

Signed-off-by: Vitaly Chikunov <vt@altlinux.org>

remove-old-kernels

@@ -107,38 +107,15 @@ else
 	flavours="${kernel_flavour:-$current_kernel_flavour}"
 fi
 
-echo "Checking for installed kernel packages..."
-# Rewrite `uname -r's kernelrelease (V-F-R) to package's F-V-R format
-tver=${uname_r%%-*}
-trel=${uname_r##*-}
-tflv=${uname_r#"$tver"-}
-tflv=${tflv%-"$trel"}
-flavour_version_release=$tflv-$tver-$trel
-unset tver trel tflv
-
 echo "For removing:"
-for kernel_flavour in $flavours
+for kernel_flavour in $flavours; do
-do
+	# rpmevrcmp is not needed since we don't output epoch
-	old_kernels="$(rpm -qa | grep -F "kernel-image-$kernel_flavour" | grep -F -w -v "$flavour_version_release" | sort | tr '\n' ' ')"
+	# Output all kernels, sort by a version, skip last (highest version) one,
-	if [ -n "$all" ] ; then
+	# then filter out kernels we want to keep (like booted one).
-		echo "$kernel_flavour:"
+	old_kernels="$(rpm -qa "kernel-image-$kernel_flavour" | sort -V | head -n-1)"
-	fi
+	for kernel in $old_kernels; do
-	for kernel in $old_kernels
+		[ "$kernel" = "$current_kernel_package" ] && continue
-	do
+		echo "   $kernel"
-		if [ "$current_kernel_flavour" = "$kernel_flavour" ] ; then
-			comparever="$(rpmevrcmp "$current_kernel_package" "$kernel")"
-			[ "$comparever" -lt 0 ] && continue
-		else
-			# check if kernel is latest with given flavour
-			latest=1
-			for kernel2 in $old_kernels
-			do
-				comparever="$(rpmevrcmp "$kernel" "$kernel2")"
-				[ "$comparever" -lt 0 ] && latest=0
-			done
-			[ "$latest" -eq 1 ] && continue
-		fi
-		echo "  $kernel"
 		apt_args_list="$apt_args_list $(rpm -q --queryformat '%{NAME}=%{EPOCH}:%{VERSION}-%{RELEASE}\n' "$kernel" \
 			| sed -e "s,(none):,,g")"
 	done