vim rx_tx.sh

    1. #!/bin/bash
    3. tmp_file=/tmp/.rx_tx.tmp
    4. tmp_log=/tmp/.rx_tx.log
    5. {
    6.     while true
    7.     do
    11.         devs=(`cat /proc/net/dev |  sed -n  '/:/p' | sed 's/:/ /g' | awk '{print $1}'`)
    12.         RX_array_pre=(`cat /proc/net/dev | awk '/:/' | sed 's/:/ /g' | awk '{print $2}'`)
    13.         TX_array_pre=(`cat /proc/net/dev | awk '/:/' | sed 's/:/ /g' | awk '{print $10}'`)
    14.         sleep 1
    15.         pid=`ps -ef|grep $0 |grep -v grep|awk 'NR==1{print $2}'`
    17.         if [[ $$ -ne $pid || -e $tmp_file ]];then
    18.             rm -rf $tmp_file
    19.             break;
    20.         fi
    22.         RX_array_next=(`cat /proc/net/dev | awk '/:/' | sed 's/:/ /g' | awk '{print $2}'`)
    23.         TX_array_next=(`cat /proc/net/dev | awk '/:/' | sed 's/:/ /g' | awk '{print $10}'`)
    25.         for i in `seq ${#RX_array_next[@]}`
    26.         do
    27.             RX_array[i-1]=$((${RX_array_next[i-1]}-${RX_array_pre[i-1]}))
    28.             TX_array[i-1]=$((${TX_array_next[i-1]}-${TX_array_pre[i-1]})) 
    29.             if [[ ${RX_array[i-1]}  -lt 1024 ]];then
    30.                 RX_array[i-1]="${RX_array[i-1]}B/s"
    31.             elif [[ ${RX_array[i-1]}  -gt 1048576 ]];then
    32.                 RX_array[i-1]=$(echo ${RX_array[i-1]}  | awk '{print $1/1048576 "MB/s"}')
    33.             else
    34.                 RX_array[i-1]=$(echo ${RX_array[i-1]}  | awk '{print $1/1024 "KB/s"}')
    35.             fi
    37.             if [[ ${TX_array[i-1]}  -lt 1024 ]];then
    38.                 TX_array[i-1]="${TX_array[i-1]}B/s"
    39.             elif [[ ${TX_array[i-1]}  -gt 1048576 ]];then
    40.                 TX_array[i-1]=$(echo ${TX_array[i-1]}  | awk '{print $1/1048576 "MB/s"}')
    41.             else
    42.                 TX_array[i-1]=$(echo ${TX_array[i-1]}  | awk '{print $1/1024 "KB/s"}')
    43.             fi
    45.         done
    47.         clear
    48.         echo -e "`date '+%Y-%m-%d %H:%M:%S'`\n" >> $tmp_log
    49.         printf "%-15s%-15s%-15s\n" "DEV" "RX(下行)" "TX(上行)" >> $tmp_log
    50.         for i in `seq ${#RX_array_next[@]}` 
    51.         do
    52.             printf "%-15s%-15s%-15s\n" ${devs[i-1]} ${RX_array[i-1]} ${TX_array[i-1]} >> $tmp_log
    53.         done
    54.         cat $tmp_log
    55.         > $tmp_log 
    56.         echo -n -e "\n(q for quit): "
    58.     done
    59. } &
    62. while true 
    63. do
    64.     read flag
    65.     if [[ "$flag" = "q" ]];then
    66.         touch $tmp_file
    67.         break;
    68.     fi
    69. done