linux 查找日志

查找日志
cat 日志文件 |grep -C 行数 “搜索文本”
cat access.log |grep -C1 “the userid:”
cat access.log|grep -C10 “requestId:1249665”
cat access.log|grep -A50 “343443”
cat access_20201105.log |grep -C10 “GYL12-20201022-0001”