【linux】【06】 查找字符串和查询指定行

1.查询字符串显示行号

grep -n "451 4.3.2 Internal server error" runlog.log 


270660:javax.mail.AuthenticationFailedException: 451 4.3.2 Internal server error
270699:javax.mail.AuthenticationFailedException: 451 4.3.2 Internal server error
270738:javax.mail.AuthenticationFailedException: 451 4.3.2 Internal server error
270777:javax.mail.AuthenticationFailedException: 451 4.3.2 Internal server error

2.查询文件270000行到275000行内容

cat runlog.log| head -n 275000 | tail -n +270000