How to get rootfs build timestamp at runtime?
<p>For version identification purposes, I want to be able to retrieve a timestamp indicating when the root filesystem image was built. It needs to be retrievable on the board itself at runtime.</p>

<p>I'm using The Ångström Distribution, branch angstrom-v2013.12-yocto1.5, which uses OpenEmbedded for building the rootfs (root filesystem).</p>

<p>The kernel is built separately for this board, so I can't use <code>uname -v</code> for this purpose since that just reads out the kernel build timestamp, not the rootfs build timestamp.</p>

<p>Does a rootfs build timestamp get added to the rootfs image some place where it can be retrieved at runtime?</p>