mirror of
https://github.com/prurigro/darkcloud-tmuxconfig.git
synced 2024-11-22 23:24:10 -05:00
25 lines
573 B
Bash
Executable file
25 lines
573 B
Bash
Executable file
#!/usr/bin/env bash
|
|
|
|
timespan=1
|
|
|
|
[[ -z "$1" ]] && {
|
|
printf '%s\n' 'Error: no device specified'
|
|
exit 1
|
|
}
|
|
[[ ! -d "/sys/class/net/$1" ]] && {
|
|
printf '%s\n' "No such device: $1"
|
|
exit 1
|
|
}
|
|
|
|
br1=$(</sys/class/net/"$1"/statistics/rx_bytes)
|
|
bt1=$(</sys/class/net/"$1"/statistics/tx_bytes)
|
|
|
|
sleep $timespan
|
|
|
|
br2=$(cat /sys/class/net/"$1"/statistics/rx_bytes)
|
|
bt2=$(cat /sys/class/net/"$1"/statistics/tx_bytes)
|
|
|
|
u_speed=$(( ( ( bt2 - bt1 ) / timespan ) / 1024 ))
|
|
d_speed=$(( ( ( br2 - br1 ) / timespan ) / 1024 ))
|
|
|
|
printf '%s\n' "D ${d_speed}KB/s | U ${u_speed}KB/s"
|