Day-to-day Problems & Answers: Grep files in Linux with Regex

Tuesday

Grep files in Linux with Regex

Grep using Regex

grep '2018-03-20 15:55.*ERROR' wso2is-5.0.0/repository/logs/wso2carbon.log

Grep & return line number

grep -n '17:01:39,266' *.c wso2is-5.0.0/repository/logs/wso2carbon.log

RESULT- wso2carbon.log:2776828

Grep & export selected lines range

sed -n '2776828,3015070 p' wso2is-5.0.0/repository/logs/wso2carbon.log > wso2carbon.log_ERROR_LOG