[SOLVED] Regex grab a substring from a string

Issue

Anyone familiar with how to use regex grab the following expression:

Random1 `json:"random1"`
Random2 `json:"random2"`
Random3 `json:"random3"`

desired output:

random1
random2
random3

What I have tried so far:

Try one:

grep -o '(\".*?\")' example1.file 

Try two:

grep -o '\"*\"' example1.file

returned nothing

This returns everything but just want the substring:

Attempt 3

grep -E "\"(.*)\"" example1.file 

Expected output:

random1
random2
random3

Solution

Using sed:

sed -E 's/^.*"(.*)"`$|.*/\1/g' example1.file

This (the |.* part) also clears lines without a match. Which then can be easily filtered out with ... | grep .

Answered By - Piotr Henryk Dabrowski

Answer Checked By - David Marino (WPSolving Volunteer)