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Check before written a small script Linux server current flow, it is very simple, but it can give us some visual information
#! / Bin / sh
The average flow rate in the 10s statistics ### to Mb units
if [ "$ 1" = ""]; then
echo -e "\ n use interface_name after the script, like \" $ 0 eth0 \ "... \ n"
exit -1
fi
echo -e "\ n start monitoring the $ 1, press \" ctrl + c \ "to stop"
echo ------------------------------------------------- ---------
#ls / etc / sysconfig / network-scripts / | grep ifcfg | cut -d "-" -f 2
while true
do
RX_bytes = `cat / proc / net / dev | grep" $ 1 "| awk '{print $ 1}' | cut -d": "-f 2`
TX_bytes = `cat / proc / net / dev | grep" $ 1 "| awk '{print $ 9}'`
sleep 10
RX_bytes_later = `cat / proc / net / dev | grep" $ 1 "| awk '{print $ 1}' | cut -d": "-f 2`
TX_bytes_later = `cat / proc / net / dev | grep" $ 1 "| awk '{print $ 9}'`
### Mb = B * 8/1024/1024
speed_RX = `echo" scale = 2; ($ RX_bytes_later - $ RX_bytes) * 8/1024/1024/10 "| bc`
speed_TX = `echo" scale = 2; ($ TX_bytes_later - $ TX_bytes) * 8/1024/1024/10 "| bc`
printf "% -3s% -3.1f% -10s% -4s% -3.1f% -4s \ n" IN: $ speed_RX Mb / s OUT: $ speed_TX Mb / s
done |
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