A shell script _linux shell that monitors network card traffic

Source: Internet
Author: User

Implementation code:


eth_in_old=$ (ifconfig eth0|grep "RX bytes" |sed s/rx ' bytes://' |awk ' {print} ')
eth_out_old=$ ( Ifconfig eth0|grep "RX bytes" |sed ' s/.*tx bytes://' |awk ' {print $} ') Sleep


eth_in_new=$ (ifconfig eth0|grep " Rx bytes "|sed ' s/rx bytes://' |awk ' {print} ')
eth_out_new=$ (ifconfig eth0|grep" RX bytes "|sed ' s/.*tx bytes://' | awk ' {print} ')
eth_in=$ (echo "scale=2" ($eth _in_new-$eth _in_old)/1000.0 "|BC" eth_out=$
(Echo) scale=2; eth_out_new-$eth _out_old)/1000 "| BC)
echo "in: $eth _in KB"
echo "out: $eth _out KB"

[Root@localhost hbshell]#./traffic.sh

in:1.74 KB
out:1.17 KB

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