Consolidate measure speed script (#188)

* remove old net speed scripts

* add reworked net-speed script

* add space between rate and speed suffix

it is easier to parse visually

* only use intervals greater zero

* add ifaces examples

* catch negativ byte count

happens when the counter resets

1 files changed, 0 insertions, 75 deletions

diff --git a/contrib/measure-net-speed.bash b/contrib/measure-net-speed.bash
deleted file mode 100755
index cef4004..0000000
--- a/contrib/measure-net-speed.bash
+++ /dev/null
@@ -1,75 +0,0 @@
-#!/bin/bash
-# Public Domain
-# (someone claimed the next lines would be useful for…
-#  people. So here goes: © 2012 Stefan Breunig
-#  stefan+measure-net-speed@mathphys.fsk.uni-heidelberg.de)
-
-
-# path to store the old results in
-path="/dev/shm/measure-net-speed"
-
-# grabbing data for each adapter. 
-# You can find the paths to your adapters using
-#  find /sys/devices -name statistics
-# If you have more (or less) than two adapters, simply adjust the script here
-# and in the next block. 
-eth0="/sys/devices/pci0000:00/0000:00:19.0/net/eth0/statistics"
-wlan0="/sys/devices/pci0000:00/0000:00:1c.1/0000:03:00.0/net/wlan0/statistics"
-read eth0_rx < "${eth0}/rx_bytes"
-read eth0_tx < "${eth0}/tx_bytes"
-read wlan0_rx < "${wlan0}/rx_bytes"
-read wlan0_tx < "${wlan0}/tx_bytes"
-
-# get time and sum of rx/tx for combined display
-time=$(date +%s)
-rx=$(( $eth0_rx + $wlan0_rx ))
-tx=$(( $eth0_tx + $wlan0_tx ))
-
-# write current data if file does not exist. Do not exit, this will cause
-# problems if this file is sourced instead of executed as another process.
-if ! [[ -f "${path}" ]]; then
-  echo "${time} ${rx} ${tx}" > "${path}"
-  chmod 0666 "${path}"
-fi
-
-# read previous state and update data storage
-read old < "${path}"
-echo "${time} ${rx} ${tx}" > "${path}"
-
-# parse old data and calc time passed
-old=(${old//;/ })
-time_diff=$(( $time - ${old[0]} ))
-
-# sanity check: has a positive amount of time passed
-if [[ "${time_diff}" -gt 0 ]]; then
-  # calc bytes transferred, and their rate in byte/s
-  rx_diff=$(( $rx - ${old[1]} ))
-  tx_diff=$(( $tx - ${old[2]} ))
-  rx_rate=$(( $rx_diff / $time_diff ))
-  tx_rate=$(( $tx_diff / $time_diff ))
-
-  # shift by 10 bytes to get KiB/s. If the value is larger than
-  # 1024^2 = 1048576, then display MiB/s instead (simply cut off  
-  # the last two digits of KiB/s). Since the values only give an  
-  # rough estimate anyway, this improper rounding is negligible.
-
-  # incoming
-  rx_kib=$(( $rx_rate >> 10 ))
-  if [[ "$rx_rate" -gt 1048576 ]]; then
-    echo -n "${rx_kib:0:-3}.${rx_kib: -3:-2} M↓"
-  else
-    echo -n "${rx_kib} K↓"
-  fi
-
-  echo -n "  "
-
-  # outgoing
-  tx_kib=$(( $tx_rate >> 10 ))
-  if [[ "$tx_rate" -gt 1048576 ]]; then
-    echo -n "${tx_kib:0:-3}.${tx_kib: -3:-2} M↑"
-  else
-    echo -n "${tx_kib} K↑"
-  fi
-else
-  echo -n " ? "
-fi
\ No newline at end of file