How to check for strings between certain strings in unix scripting?

Question

String:

name@gmail.com

Checking for:

@
.com

My code

if [[ $word =~ \"@\" ]] 
then 
    if [[          


        

Answer 1

why not go for other tools like perl:

> echo "x@gmail.com" | perl -lne 'print $1 if(/@(.*?)\.com/)'
gmail