[kvm-unit-tests PATCH] scripts/arch-run: use ncat rather than nc.

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On Red Hat 7+ and derived distributions, 'nc' is nmap-ncat, but on
Debian based distributions this is often netcat-openbsd.  Both are
mostly compatible with the important distinction that netcat-openbsd
does not shutdown the socket on stdin EOF without also passing '-N' as
an argument which is not supported on nmap-ncat.  This has the
unfortunate consequence of hanging qmp calls so tests like aarch64
its-migration never complete.

We're depending on ncat behaviour and nmap-ncat is available in all
major distributions.

Signed-off-by: Jamie Iles <jamie@xxxxxxxxxxxx>
---
 scripts/arch-run.bash | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/scripts/arch-run.bash b/scripts/arch-run.bash
index 660f1b7acb93..5997e384019b 100644
--- a/scripts/arch-run.bash
+++ b/scripts/arch-run.bash
@@ -101,13 +101,13 @@ timeout_cmd ()
 
 qmp ()
 {
-	echo '{ "execute": "qmp_capabilities" }{ "execute":' "$2" '}' | nc -U $1
+	echo '{ "execute": "qmp_capabilities" }{ "execute":' "$2" '}' | ncat -U $1
 }
 
 run_migration ()
 {
-	if ! command -v nc >/dev/null 2>&1; then
-		echo "${FUNCNAME[0]} needs nc (netcat)" >&2
+	if ! command -v ncat >/dev/null 2>&1; then
+		echo "${FUNCNAME[0]} needs ncat (netcat)" >&2
 		return 2
 	fi
 
-- 
2.25.1




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