Q:

Zcat with lines' indexes

How can I see the indexes of lines with zcat? 
I tried to find a flag of zcat, but didn't find one that show lines' numbers.
Example:
My file contains these lines:
Hello everybody!
aaa bbb
aaa Hello

What I want to get from this command:
zcat file | grep Hello

Is:
1 Hello everybody! 
3 aaa Hello

Any ideas?
Thanks!

A:

You can use -n flag with grep command in order to view the line number.  

$ zcat hello.zip | grep -n "Hello"
1:Hello everybody!
3:aaa Hello
ubuntu14@ubuntu14:~/Public$

