cat test.txt | grep pattern1 | grep pattern2순서가 pattern1 다음 pattern2 가 매치되는 라인
$ grep -E grep "pattern1.*pattern2"순서가 상관 없으려면
$ grep -E grep "pattern1.*pattern2|pattern2.*pattern1"$ cat test.txt | grep -e pattern1 -e pattern2$ cat test.txt | grep -E "pattern1|pattern2"cat test.txt | grep -v pattern1 | grep -v pattern2(사용로그)
$ cat log | grep -E "Done createContract \[[0-9]{4,5}\]" -B32 | grep -E "Request|controller| \[[7-9]{1}[0-9]{2}| \[[0-9]{4,5}\]"
$ cat total2.log | grep -B25 "Done renewContract" | grep -E " \[1[5-9]{1}[0-9]{2}| \[[2-9]{1}[0-9]{3,4}\]| \[[1-9]{1}[0-9]{4}\]| \[[7-9]{1}[0-9]{2}"