tail -f file.log | grep -Ev '(ELB|Pingdom|Health)'

编辑：正如dmourati和Caleb所指出的那样,为方便起见,您也可以使用egrep而不是grep -E.在某些系统上,这将是指向同一二进制文件的链接,而在其他系统中则是由grep包提供的副本.无论哪种方式,它都可以作为-E开关的替代品.但是,根据GNU grep手册页：

[…]two variant programs egrep and fgrep are available. egrep is the same as grep -E. fgrep is the same as grep -F. Direct invocation as either egrep or fgrep is deprecated,but is provided to allow historical applications that rely on them to run unmodified.

因为它们是同义命令,所以除非你根本没有egrep,否则它归结为偏好.但是为了向前兼容,建议使用grep -E语法,因为其他方法已被正式弃用.