I am doing a school project in which I want to get the bandwidth of a network interface at any given second, or some other small increment of time. I need this for a Perl script I am working on. Therefore it needs to be non-interactive and just prints results.
Any suggestions?
Best Answer
The number of bytes sent and received by
eth0
since the interface was brought up can be read in/sys/class/net/eth0/statistics/tx_bytes
and/sys/class/net/eth0/statistics/rx_bytes
respectively. The number of packets can be read in…/tx_packets
and…/rx_packets
. If you have an older kernel that doesn't provide these files, the data is available in the output of/sbin/ifconfig eth0
.