[ -z "$plugins_dir" ] && plugins_dir="$( dirname $PROGRAM_FILE )"
config_dir=${NETDATA_CONFIG_DIR-/etc/netdata}
-tc="$(which tc 2>/dev/null)"
+tc="$(which tc 2>/dev/null || command -v tc 2>/dev/null)"
fireqos_run_dir="/var/run/fireqos"
qos_get_class_names_every=120
qos_exit_every=3600