Deletemultiplelinesaboveandbelowfromamatchingpatterninafileusingawk/sed/grep我有file.txt包含:123456789101112131415161718192021222324252627282930313233343536373839registered{ hostname-1 { AAA32; BBBuuid-1; ip192.168.1.1; hosthostname-1; ... ... ... }}registered{ hostname-2 {