如何取值文本中一块数据？

921129732

现有一文本如下内容：（前面中括号中的日期是固定的格式，后面也有可能出现多个中括号）
[Fri Jun 28 22:29:32 2019] EXT4-fs error (device sdm1): ext4_lookup:1617: inode #69541900: comm java: deleted inode referenced: 80674974
[Fri Jun 28 22:29:32 2019] EXT4-fs error (device sdm1): ext4_lookup:1617: inode #69541900: comm java: deleted inode referenced: 80674974
[Sat Jun 29 05:41:55 2019] EXT4-fs error (device sdm1): ext4_lookup:1617: inode #69541900: comm java: deleted inode referenced: 80674975
[Sat Jun 29 05:41:55 2019] EXT4-fs error (device sdm1): ext4_lookup:1617: inode #69541900: comm java: deleted inode referenced: 80674975
[Sat Jun 29 05:41:55 2019] EXT4-fs error (device sdm1): [ext4_lookup:1617]: inode #69541900: comm java: deleted inode referenced: 80674974
[Sun Jun 30 03:07:01 2019] EXT4-fs error (device sdm1): ext4_lookup:1617: inode #69541900: comm java: deleted inode referenced: 80674975
[Sun Jun 30 03:07:02 2019] EXT4-fs error (device sdm1): ext4_lookup:1617: inode #69541900: comm java: deleted inode referenced: 80674975
[Sun Jun 30 10:02:51 2019] EXT4-fs error (device sdm1): ext4_lookup:1617: [inode] #69541900: comm java: deleted inode referenced: [80674974]
[Tue Jul  2 06:45:03 2019] EXT4-fs error (device sdn1): ext4_wait_block_bitmap:520: comm kworker/u321:2: Cannot read block bitmap - block_group = 39, block_bitmap = 1048583
[Tue Jul  2 06:45:04 2019] EXT4-fs error (device sdn1): ext4_wait_block_bitmap:520: comm kworker/u321:2: Cannot read block bitmap - block_group = 39, block_bitmap = 1048583
[Tue Jul  2 06:45:04 2019] EXT4-fs error (device sdn1): ext4_wait_block_bitmap:520: comm kworker/u321:2: Cannot read block bitmap - block_group = 39, block_bitmap = 1048583
[Tue Jul  2 11:23:17 2019] EXT4-fs error (device sdn1) in ext4_evict_inode:243: Readonly filesystem
[Tue Jul  2 11:23:17 2019] EXT4-fs error (device sdn1): ext4_journal_check_start:56: [Detected aborted journal]

想取到的结果是：（以上文本时间的最后一块内容）
[Tue Jul  2 06:45:03 2019] EXT4-fs error (device sdn1): ext4_wait_block_bitmap:520: comm kworker/u321:2: Cannot read block bitmap - block_group = 39, block_bitmap = 1048583
[Tue Jul  2 06:45:04 2019] EXT4-fs error (device sdn1): ext4_wait_block_bitmap:520: comm kworker/u321:2: Cannot read block bitmap - block_group = 39, block_bitmap = 1048583
[Tue Jul  2 06:45:04 2019] EXT4-fs error (device sdn1): ext4_wait_block_bitmap:520: comm kworker/u321:2: Cannot read block bitmap - block_group = 39, block_bitmap = 1048583
[Tue Jul  2 11:23:17 2019] EXT4-fs error (device sdn1) in ext4_evict_inode:243: Readonly filesystem
[Tue Jul  2 11:23:17 2019] EXT4-fs error (device sdn1): ext4_journal_check_start:56: [Detected aborted journal]

求教各位大神这个该如何取值呢？

LikeLx

1. awk '!b[$2,$3]++{a=""}{a=a?a"\n"$0:$0}END{print a}'

复制代码

921129732

回复 2# LikeLx

感谢大神！

921129732

回复 2# LikeLx

感谢大神！

921129732

回复 2# LikeLx

感谢大神！

921129732

回复 2# LikeLx

请教下大神，这个用sed的话该怎么写呢？awk在python里不好用

RambleHe

sed -n '7,$p' filename