递归文本搜索在外壳上的grep赛前whithin线 [英] Recursive text search whithin lines before the grep match in shell

问题描述

我需要帮助的路由器配置的备份数据库工作。我需要的接口的列表不具有 VRF 或关机在它们的配置。
我得到的所有的接口配置通过配置文件列表中通过的awk'/ ^接口/，/！/ 。这给了我下面的输出：

I need help working with router config backup database. I need to get a list of interfaces that don't have vrf or shutdown in their configuration. I get the list of all interfaces config passing the config file through awk '/^interface/,/!/'. This gives me the output below:

interface TenGigE0/3/0/0
 description 
 service-policy output QOS
 ipv4 mtu 1500
 ipv4 address 13.24.15.3 255.255.255.252
 carrier-delay up 3000 down 0
 load-interval 30
 dampening
!
interface TenGigE0/3/0/1
 description Link To 
!
interface TenGigE0/3/0/1.302
 description 
 vrf 1671
 ipv4 address 13.24.14.11 255.255.255.254
 encapsulation dot1q 302

现在，我坚持努力排除包含 VRF 线接口。我试图做的是对grep VRF，当有一个匹配，删除包含上面的字接口的路线。不幸的是对于没有运气。也许有人有一个更复杂的解决方案。

Now, i am stuck trying to exclude the interfaces that contain vrf line. What i was trying to do is to grep for vrf, and when there is a match, remove the line that contains the word "interface" above. Unfortunately with no luck. Maybe someone has a more sophisticated solution.

推荐答案

如果您有结构化记录的awk可以解决这个问题。鉴于你的中间文件

If you have the structured records awk can solve this problem. Given your intermediate file

2$ awk 'BEGIN{RS=ORS="!\n"} !/vrf/' interface

将打印的记录没有VRF

will print the records without "vrf"

interface TenGigE0/3/0/0
 description
 service-policy output QOS
 ipv4 mtu 1500
 ipv4 address 13.24.15.3 255.255.255.252
 carrier-delay up 3000 down 0
 load-interval 30
 dampening
!
interface TenGigE0/3/0/1
 description Link To
!

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