The /bin/free on Fedora 21 doesn't understand -o argument to free;
that being:
---
-o, --old
Display the output in old format, the only difference being this
option will disable the display of the "buffer adjusted" line.
---
i.e. the difference is the "-/+ buffers/cache" line. Since the sed
only matches on the line starting "^Mem", this is not relevant anyway.
Change-Id: Ib2f763ea82b9a3b397d202453099d58e5dd5a355
5bf682af2d