updated shebang for compatibility

[netdata.git] / charts.d / ap.chart.sh

diff --git a/charts.d/ap.chart.sh b/charts.d/ap.chart.sh
index 10a65688c23c0fed9d5eee0aab1bde4613ca8336..7b4f690bb47ece250d03c249e58f294560d3758f 100755 (executable)
--- a/charts.d/ap.chart.sh
+++ b/charts.d/ap.chart.sh
@@ -1,4 +1,4 @@
-#!/bin/bash
+# no need for shebang - this file is loaded from charts.d.plugin
 
 # _update_every is a special variable - it holds the number of seconds
 # between the calls of the _update() function
@@ -11,6 +11,8 @@ export PATH="${PATH}:/sbin:/usr/sbin:/usr/local/sbin"
 
 # _check is called once, to find out if this chart should be enabled or not
 ap_check() {
+       require_cmd iw || return 1
+       
        local ev=$(iw dev | awk '
                BEGIN {
                        i = "";
@@ -54,25 +56,25 @@ ap_create() {
 
                # create the chart with 3 dimensions
                cat <<EOF
-CHART ap_clients.${dev} '' "Connected clients to ${ssid} on ${dev}" "clients" ${dev} ap.clients line $[ap_priority + 1] $ap_update_every
+CHART ap_clients.${dev} '' "Connected clients to ${ssid} on ${dev}" "clients" ${dev} ap.clients line $((ap_priority + 1)) $ap_update_every
 DIMENSION clients '' absolute 1 1
 
-CHART ap_bandwidth.${dev} '' "Bandwidth for ${ssid} on ${dev}" "kilobits/s" ${dev} ap.net area $[ap_priority + 2] $ap_update_every
+CHART ap_bandwidth.${dev} '' "Bandwidth for ${ssid} on ${dev}" "kilobits/s" ${dev} ap.net area $((ap_priority + 2)) $ap_update_every
 DIMENSION received '' incremental 8 1024
 DIMENSION sent '' incremental -8 1024
 
-CHART ap_packets.${dev} '' "Packets for ${ssid} on ${dev}" "packets/s" ${dev} ap.packets line $[ap_priority + 3] $ap_update_every
+CHART ap_packets.${dev} '' "Packets for ${ssid} on ${dev}" "packets/s" ${dev} ap.packets line $((ap_priority + 3)) $ap_update_every
 DIMENSION received '' incremental 1 1
 DIMENSION sent '' incremental -1 1
 
-CHART ap_issues.${dev} '' "Transmit Issues for ${ssid} on ${dev}" "issues/s" ${dev} ap.issues line $[ap_priority + 4] $ap_update_every
+CHART ap_issues.${dev} '' "Transmit Issues for ${ssid} on ${dev}" "issues/s" ${dev} ap.issues line $((ap_priority + 4)) $ap_update_every
 DIMENSION retries 'tx retries' incremental 1 1
 DIMENSION failures 'tx failures' incremental -1 1
 
-CHART ap_signal.${dev} '' "Average Signal for ${ssid} on ${dev}" "dBm" ${dev} ap.signal line $[ap_priority + 5] $ap_update_every
+CHART ap_signal.${dev} '' "Average Signal for ${ssid} on ${dev}" "dBm" ${dev} ap.signal line $((ap_priority + 5)) $ap_update_every
 DIMENSION signal 'average signal' absolute 1 1
 
-CHART ap_bitrate.${dev} '' "Bitrate for ${ssid} on ${dev}" "Mbps" ${dev} ap.bitrate line $[ap_priority + 6] $ap_update_every
+CHART ap_bitrate.${dev} '' "Bitrate for ${ssid} on ${dev}" "Mbps" ${dev} ap.bitrate line $((ap_priority + 6)) $ap_update_every
 DIMENSION receive '' absolute 1 1000
 DIMENSION transmit '' absolute -1 1000
 DIMENSION expected 'expected throughput' absolute 1 1000