notes.sh: Add handy kernel version detection commands.

notes.sh

@@ -8,3 +8,11 @@ xfs_admin -l /dev/sda2
 
 # set label to ROOT
 xfs_admin -L "ROOT" /dev/sda2
+
+# get the package version of the next installation candidate
+# (replace "Candidate" with "Installed" to get the current package version)
+apt-cache policy linux-image-amd64 | grep Candidate | awk '{print $2}'
+
+# get the current kernel revision and version
+kernel_revision=$(uname -r); echo ${kernel_revision%-*}
+kernel_version=$(uname -v | cut -d' ' -f4)