[Gllug] hostname on CentOS

[Tethys]

Nix writes:

>find /etc -type f | xargs grep foo)

Even when using xargs, you should still append /dev/null to the end of
the grep. Although xargs reduces the probabilty dramatically, it's still
possible for grep to be passed a single filename in some circumstances,
and hence the /dev/null is needed so you know in which file the match has
been found:

	find /etc -type f | xargs grep foo /dev/null

Tet
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