02-04-2015
Could you help me writing a script showing which network connections are currently active?
Could you help me writing a script showing which network connections are currently active?
Means output should be something like:
"eth0, wlan1, wlan3"
Problem:
The output is supposed to happen on a 16x2 LCD Display.
Currently I am doing a "Ifconfig" as output, but its too fast for the display.
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LEARN ABOUT DEBIAN
speedometer
speedometer(1) User Commands speedometer(1)
NAME
speedometer - measure and display the rate of data across a network connection
SYNOPSIS
speedometer [options] tap [[-c] tap] ...
DESCRIPTION
Monitor network traffic or speed/progress of a file transfer. At least one tap option (-f, -rx, -tx) must be entered. Option -c starts a
new column, otherwise taps are piled vertically.
Note: before you use the program, satrt generating traffic by transferring files in/out e.g. with scp(1) in the network you're measuring.
OPTIONS
-b Use old blocky display instead of smoothed display even when UTF-8 encoding is detected.
-f filename [size]
Display download speed with progress bar. This option must be used if directly following another file tap without an expected size
specified.
-i interval
Interval in seconds. Examples: 5 or 0.25". Default is 1.
-p Use plain-text display (one tap only).
-rx iface
Display bytes received on network interface.
-tx iface
Display bytes transmitted on network interface.
-z Report zero size on files that don't exist instead of waiting for them to be created
EXAMPLES
How long it will take for my 38MB transfer to finish?
speedometer favorite_episode.rm $(( 38 * 1024 * 1024 ))
How quickly is another transfer going?
speedometer dl/big.avi
How fast is this LAN?
host-a$ cat /dev/zero | nc -l -p 12345
host-b$ nc host-a 12345 > /dev/null
host-b$ speedometer -rx eth0
How fast is the upstream on this ADSL line?
speedometer -tx ppp0
How fast can I write data to my filesystem? (with at least 1GB free)
dd bs=1000000 count=1000 if=/dev/zero of=bigfile &
speedometer bigfile
ENVIRONMENT
None.
FILES
None.
SEE ALSO
htop(1) iotop(1) scp(1) top(1) vmstat(1)
AUTHORS
Program was written by Ian Ward <ian.ward@excess.org>
This manual page was written by Jari Aalto <jari.aalto@cante.net>. Released under license GNU GPL version 2 or (at your option) any later
version. For more information about license, visit <http://www.gnu.org/copyleft/gpl.html>.
speedometer 2011-12-10 speedometer(1)