TIL 230125 - grep 앞 뒤 라인 내용 출력

grep 다음 라인 출력: -A 옵션 + 라인 수

$ grep 'code coverage best practices' ./* -inr -A 1
./posts/2020-12-09---codecoverage/index.md:2:title: Code Coverage Best Practices
./posts/2020-12-09---codecoverage/index.md-3-date: 2020-12-09 22:00:00

grep 이전 라인 출력: -B 옵션 + 라인 수

$ grep 'code coverage best practices' ./* -inr -B 1
./posts/2020-12-09---codecoverage/index.md-1----
./posts/2020-12-09---codecoverage/index.md:2:title: Code Coverage Best Practices

grep 이전, 다음 라인 출력: -C 옵션 + 라인 수

$ grep 'code coverage best practices' ./* -inr -C 1
./posts/2020-12-09---codecoverage/index.md-1----
./posts/2020-12-09---codecoverage/index.md:2:title: Code Coverage Best Practices
./posts/2020-12-09---codecoverage/index.md-3-date: 2020-12-09 22:00:00