initial

tmux/powerline/segments/ifstat.sh

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+# Show network statistics for all active interfaces found.
+
+run_segment() {
+	type ifstat >/dev/null 2>&1
+	if [ "$?" -ne 0 ]; then
+		return 1
+	fi
+
+	sed="sed"
+	type gsed >/dev/null 2>&1
+	if [ "$?" -eq 0 ]; then
+		sed="gsed"
+	fi
+
+	data=$(ifstat -z -S -q 1 1)
+	interfaces=$(echo -e "${data}" | head -n 1)
+	flow_data=$(echo -e "${data}" | tail -n 1 | ${sed} "s/\s\{1,\}/,/g")
+	index=1
+	for inf in ${interfaces}; do
+		type=""
+		case ${inf} in
+			eth*) type="⎆"
+				;;
+			wlan*) type="☫"
+				;;
+			en*) type=" "
+				;;
+		esac
+		if [ -n "${type}" ]; then
+			format=$(echo "${format} ${type} ⇊ %5.01f ⇈ %5.01f")
+			holder=$(echo "${holder},\$$((index)),\$$((index+1))")
+		fi
+		index=$((index+2))
+	done
+	if [ -n "${format}" ]; then
+		echo $(echo "${flow_data#,}" | awk -F"," "{printf(\"${format}\"${holder})}")
+	fi
+	return 0
+}