grep -E is followed by a regular expression defined by POSIX and is the 
same as egrep according to my fedora 20 man page for grep
info grep gives more details for -E


On 08/24/2014 05:21 PM, Michael Havens wrote:
> what does the -E option do. The man page leaves much to be desired....
> :-)~MIKE~(-:
>
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