- 使用方法:./x.sh 网卡名
#!/bin/bash NIC=$1 echo -e " In ------ Out" while true; do OLD_IN=$(awk '$0~"'$NIC'"{print $2}' /proc/net/dev) OLD_OUT=$(awk '$0~"'$NIC'"{print $10}' /proc/net/dev) sleep 1 NEW_IN=$(awk '$0~"'$NIC'"{print $2}' /proc/net/dev) NEW_OUT=$(awk '$0~"'$NIC'"{print $10}' /proc/net/dev) IN=$(printf "%.1f%s" "$((($NEW_IN-$OLD_IN)/1024))" "KB/s") OUT=$(printf "%.1f%s" "$((($NEW_OUT-$OLD_OUT)/1024))" "KB/s") echo "$IN $OUT" sleep 1 done