How to get the value of lost packets from ping with grep-CodePudding

please help me I have result and it looks like this:`

PING 192.168.1.1 (192.168.1.1) 56(84) bytes of data.
--- 192.168.1.1 ping statistics ---
300 packets transmitted, 300 received, 0% packet loss, time 299426ms
rtt min/avg/max/mdev = 1.136/4.454/24.153/3.206 ms

I need search packet loss and I do:

ping -c 300 -q 192.168.1.1 | grep -oP '\d (?=% packet loss)'

and it's works but somtimes ping result look like this:

--- 192.168.1.1 ping statistics ---
300 packets transmitted, 299 received, 0,333333% packet loss, time 299433ms
rtt min/avg/max/mdev = 1.175/4.424/23.546/3.077 ms

then I have to use

ping -c 300 -q 192.168.1.1 | grep -oP '\d .\d (?=% packet loss)'

Is it possible to combine these two queries to display the packet loss results?Because I don't know when the result will be in a fraction and when as an integer

CodePudding user response：

You could combine them as "digit or dot" . It is technically incorrect, but with ping it will do the job safely:

ping -c 300 -q 192.168.1.1 | grep -oP '[\d .,] (?=% packet loss)'

CodePudding user response：

You can modify your regular expression with an optional group after the \d that matches the fraction:

\d (,\d )?

The grep command becomes:

grep -oP '\d (,\d )?(?=% packet loss)'

Here comma is used as the decimal separator to match your example. If you want to match either comma or dot as suggested in a comment you can use the following fragment:

\d ([,.]\d )?

If you only want to match dot then you have to escape it with a backslash:

\d (\.\d )?