Need help in removing commas

Shell Programming and Scripting
1

i have the below line as output from a script. I want to delete the string "," and get the output without comma,

cat D* | grep "bytes free" | awk '{print $3}' | ?????

output:


40,966,189,056

Desired O/P:

40966189056
2

Useless use of cat and grep, with one awk command:

awk '/bytes free/{gsub(",","",$3);print $3}' D*

Regards