grep同时满足多个关键字、满足任意关键字和排除关键字

1. 同时满足多个关键字 grep "word1" file_name | grep "word2" | grep "word3" 2. 满足任意关键字 grep -e "word1" -e "word2" -e "word3" file_name 3. 排除关键字 grep -v "word" file_name   Note: cut （剪切摘取所需部分） wc -l (计数) sort （排序） uniq (去重)