Which command is used to display the lines containing capital letters from a specific file in Linux operating system?

Grep -n [a-z] turkey.txt-grep, sed, tail, head, less, sort, cut etc are string processing tools, which uses different symbls to match the pattern. whildcard charaacter: . àany single character * àzero or more character [abc] àany single character from the range [^abc] àany single character except from the range similarly anchors ^ àline beigns with $ àline ends with \\< àword beigns with \\> àword ends with