Issue
I am new to grep and UNIX. I have a sample of data and want to display all the first names that only contain three characters e.g. Lee_example. but I having some difficulty doing that. I am currently using this code cat file.txt|grep -E "[A-Z][a-z]{2}" but it is displaying all the names that contain at least 3 characters and not only 3 characters
Sample data
| name | number |
|---|---|
| Lee_example | 1 |
| Hector_exaple | 2 |
Solution
You need to match the _ after the first name.
grep -E "[A-Z][a-z]{2}_"
Answered By - Barmar Answer Checked By - Dawn Plyler (WPSolving Volunteer)