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Check current network bandwidth used on a Linux/Unix box
Fri, 29 Nov 2013 14:10:30 +0000

Sometimes you need to quickly measure current bandwidth used by your Linux box and don't have dedicated command installed. You can use standard /proc/ file entries to get that info from the system.

Example of a embedded device with a TS stream as an input: ( cat /proc/net/dev; sleep 1; cat /proc/net/dev; ) | awk '/eth0/ { b=$1; sub(/eth0:/,"",b); if(bp){ print (b-bp)/1024/1024, "MB/s" }; bp=b }' 1.00053 MB/s


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