The following are two such scripts by joe miller. The first script counts the number of packets per second, received (RX) or sent (TX) on an interface, while the latter scripts measures the network bandwidth of incoming (RX) and outgoing (TX) traffic on an interface. For these scripts to work, you do not need to install anything.
The following screenshot shows the above two scripts in action.
Measure Packets per Second on an Interface
1.netpps.sh
#!/bin/bash
INTERVAL=
"1"
# update interval in seconds
if
[ -z
"$1"
];
then
echo
echo
usage: $0 [network-interface]
echo
echo
e.g. $0 eth0
echo
echo
shows packets-per-second
exit
fi
IF=$1
while
true
do
R1=`
cat
/sys/class/net/
$1
/statistics/rx_packets
`
T1=`
cat
/sys/class/net/
$1
/statistics/tx_packets
`
sleep
$INTERVAL
R2=`
cat
/sys/class/net/
$1
/statistics/rx_packets
`
T2=`
cat
/sys/class/net/
$1
/statistics/tx_packets
`
TXPPS=`
expr
$T2 - $T1`
RXPPS=`
expr
$R2 - $R1`
echo
"TX $1: $TXPPS pkts/s RX $1: $RXPPS pkts/s"
done
Measure Network Bandwidth on an Interface
2.
netpps.sh
#!/bin/bash
INTERVAL=
"1"
# update interval in seconds
if
[ -z
"$1"
];
then
echo
echo
usage: $0 [network-interface]
echo
echo
e.g. $0 eth0
echo
exit
fi
IF=$1
while
true
do
R1=`
cat
/sys/class/net/
$1
/statistics/rx_bytes
`
T1=`
cat
/sys/class/net/
$1
/statistics/tx_bytes
`
sleep
$INTERVAL
R2=`
cat
/sys/class/net/
$1
/statistics/rx_bytes
`
T2=`
cat
/sys/class/net/
$1
/statistics/tx_bytes
`
TBPS=`
expr
$T2 - $T1`
RBPS=`
expr
$R2 - $R1`
TKBPS=`
expr
$TBPS / 1024`
RKBPS=`
expr
$RBPS / 1024`
echo
"TX $1: $TKBPS kb/s RX $1: $RKBPS kb/s"
done
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