[Libguestfs] [PATCH nbdkit] tests/test-truncate4.sh: Rewrite to use nbdsh.

[Richard W.M. Jones]

> >+if ! dd --help | grep fullblock; then
> >+    echo "$0: requires GNU dd with the iflag=fullblock option"
> >+    exit 77
> >+fi

I realised I left this in from an earlier version.  I dropped
this & the necessity to have "truncate" and pushed it, thanks.

Rich.

-- 
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