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86c1ddc121
The `which` command in Fedora 20 (differently from the one in Debian) prints to stderr when the binary is not found. Redirect both stdout and stderr to /dev/null to prevent messages from being printed by `which`. Check whether the binary exists or not by the exit status of `which` (non-zero means the binary does not exist) instead of checking for empty output. Tested: - Started a Vagrant cluster with `vagrant up` and confirmed these messages were gone. Checked master and minions for Kubernetes components using the systemd status commands. - Confirmed that the same error message for salt-minion is also suppressed from the output with this patch. Fixes: Issue #1079 Signed-off-by: Filipe Brandenburger <filbranden@google.com>