rsvp · May 13, 2020 15:08 · rsvp · Mar 7, 2017
diff --git a/netspeed.sh b/netspeed.sh
 #!/usr/bin/env bash
 #              bash 4.1.5(1)     Linux Ubuntu 10.04               Date : 2013-07-11
 #
 # _______________|  netspeed : check download speed via command line.
 #
 #           Usage:  netspeed [tokyo, london, usw, use, east, west, URL]
 #                                            ^default U.S. west coast.
 #                            [ -speed_KB/sec ]
 #                              ^negation activates the Mbps converter.
 #
 #                            First try it out without any arguments.
 #                                            
 #    Dependencies:  wget 
 #                   (rate displayed in Kilobytes per second, 
 #                    whereas speed tests usually adopt Megabits.)
 #
 #   Example units:  Download Speed: 659 kbps     (82.4 KB/sec transfer rate)
 #                     Upload Speed: 317 kbps     (39.6 KB/sec transfer rate)
 #                                       kb=kilobits    KB=Kilobytes
 #                   So  0.007813 Mb =    8 kilobits =   1 Kilobyte
 #                   since      1 Mb = 1024 kilobits = 128 Kilobytes
 #
 #           Units:  b stands for bit and B stands for byte. In the context of 
 #                   data rate units, one byte refers to 8 bits. For example, 
 #                   when a 1 Mbps connection is advertised, it usually means 
 #                   that the maximum achievable download bandwidth is 
 #                   1  megabit/s (million bits per second), which is actually 
 #                   0.125   MB/s (megabyte per second), or about 
 #                   0.1192 MiB/s (mebibyte per second). 
 #                   http://en.wikipedia.org/wiki/Mbit/s#megabit_per_second


 #  CHANGE LOG  get LATEST version from https://bitbucket.org/rsvp/gists/src
 #
 #  2013-07-11  Modify linode.com domains which have test files, 
 #                 see https://www.linode.com/speedtest/
 #  2011-10-09  Add rate conversion to Mbps using negated first argument.
 #  2011-10-08  Add URL as possible arg. Clarify rate units.
 #                 Public as gist to https://gist.github.com/1272488
 #  2011-10-07  First version based on wget, though curl also works:
 #                 http://stackoverflow.com/questions/426272
 #                 Command line alternative to http://www.speedtest.net

 #           _____ Prelims
 set -u
 #   ^ unbound (i.e. unassigned) variables shall be errors.
 set -e
 #   ^ error checking :: Highly Recommended (caveat:  you can't check $? later).  
 #
 # _______________     ::  BEGIN  Script ::::::::::::::::::::::::::::::::::::::::

 site=${1:-'usw'}


 case $site in 
     'london') test='http://speedtest.london.linode.com/100MB-london.bin'    ;;
     'tokyo')  test='http://speedtest.tokyo.linode.com/100MB-tokyo.bin'      ;;
     'usw')    test='http://speedtest.fremont.linode.com/100MB-fremont.bin'  ;;
               #  US West:  Fremont, California
     'use')    test='http://speedtest.newark.linode.com/100MB-newark.bin'    ;;
               #  US East:  Newark, New Jersey
     'east')   test='http://speedtest.wdc01.softlayer.com/downloads/test500.zip'                 ;;
               #  US East:  Washington, D.C.
     'west')   test='http://speedtest.sjc01.softlayer.com/speedtest/speedtest/random500x500.jpg' ;;
               #  US West:  San Jose, California
     *)        test=$1  ;;
               #  valid URL assumed, else wget will give any error message.
 esac
     #  Sources:
     #  2013-07-11  Linode renames sub-domains for testing.
     #  2011-10-07  http://www.linode.com/speedtest/      for file URL.
     #              http://speedtest.wdc01.softlayer.com  for actual testing.



 if [ $test = -${test#-} ] ; then
     #     ^check for negative sign in the first argument.
     echo "`awk "BEGIN { print ($test * -0.007813) }"` Mbps"
     #      awk as nice floating-point calculator!
 else
     echo ' ::  Rate in Kilobytes/sec; industry usually adopts megabits/sec:       '
     echo ' ::        1 Kilobytes/sec (K/s)   =       0.007813 megabits/sec (Mbps).'
     echo ' ::        To CONVERT, use negated rate as first argument to netspeed.  '
     echo ' ::  [Terminate netspeed by control-C]     [ cf. http://speedtest.net ] '
     echo ' ::  '
     trap 'echo -e "\n\n ::  Exit successful on designed interrupt."; exit 0' SIGINT
     #      MAIN
     wget  --output-document=/dev/null  $test 
 fi

 #       If --output-file for wget was used to log results...
 #
 #  --2011-10-07 21:38:27--  
 #  Resolving speedtest.sjc01.softlayer.com... 50.23.64.58
 #  Connecting to speedtest.sjc01.softlayer.com|50.23.64.58|:80... connected.
 #  HTTP request sent, awaiting response... 200 OK
 #  Length: 505544 (494K) [image/jpeg]
 #  Saving to: `/dev/null'
 #  
 #       0K .......... .......... .......... .......... .......... 10% 80.9K 5s
 #      50K .......... .......... .......... .......... .......... 20% 78.5K 5s
 #     100K .......... .......... .......... .......... .......... 30% 80.8K 4s
 #     150K .......... .......... .......... .......... .......... 40% 78.8K 4s
 #     200K .......... .......... .......... .......... .......... 50% 80.8K 3s
 #     250K .......... .......... .......... .......... .......... 60% 78.5K 2s
 #     300K .......... .......... .......... .......... .......... 70% 78.8K 2s
 #     350K .......... .......... .......... .......... .......... 81% 80.8K 1s
 #     400K .......... .......... .......... .......... .......... 91% 78.5K 1s
 #     450K .......... .......... .......... .......... ...       100% 81.9K=6.2s
 #  
 #  2011-10-07 21:38:33 (79.8 KB/s) - `/dev/null' saved [505544/505544]


 exit 0
 # _______________ EOS ::  END of Script ::::::::::::::::::::::::::::::::::::::::


 #  #  Alternative to wget...
 #  curl -o /dev/null  $test
 #  #  curl is less verbose than wget. Speed is displayed as bytes per second:
 #  #
 #  #    % Total    % Received % Xferd  Average Speed   Time    Time     Time  Current
 #  #                                   Dload  Upload   Total   Spent    Left  Speed
 #  #    0  500M    0 4931k    0     0  80993      0  1:47:53  0:01:02  1:46:51 81520


 #  vim: set fileencoding=utf-8 ff=unix tw=78 ai syn=sh :
	#!/usr/bin/env bash
	# bash 4.1.5(1) Linux Ubuntu 10.04 Date : 2013-07-11
	#
	# _______________\| netspeed : check download speed via command line.
	#
	# Usage: netspeed [tokyo, london, usw, use, east, west, URL]
	# ^default U.S. west coast.
	# [ -speed_KB/sec ]
	# ^negation activates the Mbps converter.
	#
	# First try it out without any arguments.
	#
	# Dependencies: wget
	# (rate displayed in Kilobytes per second,
	# whereas speed tests usually adopt Megabits.)
	#
	# Example units: Download Speed: 659 kbps (82.4 KB/sec transfer rate)
	# Upload Speed: 317 kbps (39.6 KB/sec transfer rate)
	# kb=kilobits KB=Kilobytes
	# So 0.007813 Mb = 8 kilobits = 1 Kilobyte
	# since 1 Mb = 1024 kilobits = 128 Kilobytes
	#
	# Units: b stands for bit and B stands for byte. In the context of
	# data rate units, one byte refers to 8 bits. For example,
	# when a 1 Mbps connection is advertised, it usually means
	# that the maximum achievable download bandwidth is
	# 1 megabit/s (million bits per second), which is actually
	# 0.125 MB/s (megabyte per second), or about
	# 0.1192 MiB/s (mebibyte per second).
	# http://en.wikipedia.org/wiki/Mbit/s#megabit_per_second


	# CHANGE LOG get LATEST version from https://bitbucket.org/rsvp/gists/src
	#
	# 2013-07-11 Modify linode.com domains which have test files,
	# see https://www.linode.com/speedtest/
	# 2011-10-09 Add rate conversion to Mbps using negated first argument.
	# 2011-10-08 Add URL as possible arg. Clarify rate units.
	# Public as gist to https://gist.github.com/1272488
	# 2011-10-07 First version based on wget, though curl also works:
	# http://stackoverflow.com/questions/426272
	# Command line alternative to http://www.speedtest.net

	# _____ Prelims
	set -u
	# ^ unbound (i.e. unassigned) variables shall be errors.
	set -e
	# ^ error checking :: Highly Recommended (caveat: you can't check $? later).
	#
	# _______________ :: BEGIN Script ::::::::::::::::::::::::::::::::::::::::

	site=${1:-'usw'}


	case $site in
	'london') test='http://speedtest.london.linode.com/100MB-london.bin' ;;
	'tokyo') test='http://speedtest.tokyo.linode.com/100MB-tokyo.bin' ;;
	'usw') test='http://speedtest.fremont.linode.com/100MB-fremont.bin' ;;
	# US West: Fremont, California
	'use') test='http://speedtest.newark.linode.com/100MB-newark.bin' ;;
	# US East: Newark, New Jersey
	'east') test='http://speedtest.wdc01.softlayer.com/downloads/test500.zip' ;;
	# US East: Washington, D.C.
	'west') test='http://speedtest.sjc01.softlayer.com/speedtest/speedtest/random500x500.jpg' ;;
	# US West: San Jose, California
	*) test=$1 ;;
	# valid URL assumed, else wget will give any error message.
	esac
	# Sources:
	# 2013-07-11 Linode renames sub-domains for testing.
	# 2011-10-07 http://www.linode.com/speedtest/ for file URL.
	# http://speedtest.wdc01.softlayer.com for actual testing.



	if [ $test = -${test#-} ] ; then
	# ^check for negative sign in the first argument.
	echo "`awk "BEGIN { print ($test * -0.007813) }"` Mbps"
	# awk as nice floating-point calculator!
	else
	echo ' :: Rate in Kilobytes/sec; industry usually adopts megabits/sec: '
	echo ' :: 1 Kilobytes/sec (K/s) = 0.007813 megabits/sec (Mbps).'
	echo ' :: To CONVERT, use negated rate as first argument to netspeed. '
	echo ' :: [Terminate netspeed by control-C] [ cf. http://speedtest.net ] '
	echo ' :: '
	trap 'echo -e "\n\n :: Exit successful on designed interrupt."; exit 0' SIGINT
	# MAIN
	wget --output-document=/dev/null $test
	fi

	# If --output-file for wget was used to log results...
	#
	# --2011-10-07 21:38:27--
	# Resolving speedtest.sjc01.softlayer.com... 50.23.64.58
	# Connecting to speedtest.sjc01.softlayer.com\|50.23.64.58\|:80... connected.
	# HTTP request sent, awaiting response... 200 OK
	# Length: 505544 (494K) [image/jpeg]
	# Saving to: `/dev/null'
	#
	# 0K .......... .......... .......... .......... .......... 10% 80.9K 5s
	# 50K .......... .......... .......... .......... .......... 20% 78.5K 5s
	# 100K .......... .......... .......... .......... .......... 30% 80.8K 4s
	# 150K .......... .......... .......... .......... .......... 40% 78.8K 4s
	# 200K .......... .......... .......... .......... .......... 50% 80.8K 3s
	# 250K .......... .......... .......... .......... .......... 60% 78.5K 2s
	# 300K .......... .......... .......... .......... .......... 70% 78.8K 2s
	# 350K .......... .......... .......... .......... .......... 81% 80.8K 1s
	# 400K .......... .......... .......... .......... .......... 91% 78.5K 1s
	# 450K .......... .......... .......... .......... ... 100% 81.9K=6.2s
	#
	# 2011-10-07 21:38:33 (79.8 KB/s) - `/dev/null' saved [505544/505544]


	exit 0
	# _______________ EOS :: END of Script ::::::::::::::::::::::::::::::::::::::::


	# # Alternative to wget...
	# curl -o /dev/null $test
	# # curl is less verbose than wget. Speed is displayed as bytes per second:
	# #
	# # % Total % Received % Xferd Average Speed Time Time Time Current
	# # Dload Upload Total Spent Left Speed
	# # 0 500M 0 4931k 0 0 80993 0 1:47:53 0:01:02 1:46:51 81520


	# vim: set fileencoding=utf-8 ff=unix tw=78 ai syn=sh :