[SOLVED] Extract only integer milliseconds from linux commandline ping

Issue

I try to extract just integer number of milliseconds from continuous ping output in OpenWRT commandline. Example from ping 8.8.8.8

64 bytes from 8.8.8.8: seq=6 ttl=55 time=6.356 ms
64 bytes from 8.8.8.8: seq=7 ttl=55 time=6.520 ms
...

Desire output should looks like this:

6
6
...

Just integer (left part of number). Without fraction part and wihout dot.

I tried to cut output using pipes, firstly cutting equal signs ping 8.8.8.8 | cut -d '=' -f 4 which works

6.389 ms
6.051 ms
...

Then cutting also dots to get integer only ping 8.8.8.8 | cut -d "=" -f4 | cut -d '.' -f1 but then no output shows at all. I tried also using awk but when I use more than one pipe with those commands, there is no output. Could you show me how to do that.

Solution

You can pipe the output through perl (for example) and use a simple regex:

ping -c3 8.8.8.8 | perl -nle '/time=(\d+)/ && print $1'

This will print the integer part.

You could also round the milliseconds to the nearest integer with printf

ping -c3 8.8.8.8 | perl -ne '/time=([\d\.]+) ms/ && printf "%.0f\n", $1'

Answered By - mivk

Answer Checked By - Candace Johnson (WPSolving Volunteer)