用regex解析lspci树

Question

$ lspci -tv | grep -E 'Gigabit Network|Gigabit Ether| Ethernet' | grep -oP '(?<=^).*(?=Intel)'
           +-01.0-[01-04]----00.0-[02-04]--+-01.0-[03]--+-00.0  
           |                               |            +-00.1  
           |                               |            +-00.2  
           |                               |            \-00.3  
           |                               \-03.0-[04]--+-00.0  
           |                                            \-00.1  
           +-1c.0-[05]----00.0  
           +-1c.1-[06]----00.0  

我试图从这个树中获取使用PCI总线地址的NIC排序(时隙)。这些表示为给定行上的最后一个正则表达式\[[0-9a-ZA-Z]\]，例如，[03],[04],[05]，然后是它们后面的子标头，例如00.0, 00.1, 00.2 for [03]。

我的预期产出应该是：

03:00.0
03:00.1
03:00.2
03:00.3  
04:00.0
04:00.1   
05:00.0
06:00.0

例如，我尝试过这个，但没有更进一步。我知道这很难看，任何有或没有pipes的解决方案都可以。

$ lspci -tv | grep -E 'Gigabit Network|Gigabit Ether| Ethernet' | grep -oP '(?<=\-).*(?=Intel)'  | grep -oE '(\[[0-9a-ZA-Z]{2}\])|(\[[0-9a-ZA-Z]{2}\].*[0-9]{2}\.[0-9])|(^[0-0]{2}.[0-9])'
[03]--+-00.0
00.1
00.2
00.3
[04]--+-00.0
00.1
[05]----00.0
[06]----00.0

lspci -tv输出。我只对网卡感兴趣。grep Network，但是还有其他的例子，上面写着Ethernet。

$ lspci -tv
-[0000:00]-+-00.0  Intel Corporation Skylake Host Bridge/DRAM Registers
           +-01.0-[01-04]----00.0-[02-04]--+-01.0-[03]--+-00.0  Intel Corporation I350 Gigabit Network Connection
           |                               |            +-00.1  Intel Corporation I350 Gigabit Network Connection
           |                               |            +-00.2  Intel Corporation I350 Gigabit Network Connection
           |                               |            \-00.3  Intel Corporation I350 Gigabit Network Connection
           |                               \-03.0-[04]--+-00.0  Intel Corporation I350 Gigabit Network Connection
           |                                            \-00.1  Intel Corporation I350 Gigabit Network Connection
           +-02.0  Intel Corporation HD Graphics P530
           +-13.0  Intel Corporation Sunrise Point-H Integrated Sensor Hub
           +-14.0  Intel Corporation Sunrise Point-H USB 3.0 xHCI Controller
           +-14.2  Intel Corporation Sunrise Point-H Thermal subsystem
           +-16.0  Intel Corporation Sunrise Point-H CSME HECI #1
           +-16.1  Intel Corporation Sunrise Point-H CSME HECI #2
           +-17.0  Intel Corporation Sunrise Point-H SATA controller [AHCI mode]
           +-1c.0-[05]----00.0  Intel Corporation I210 Gigabit Network Connection
           +-1c.1-[06]----00.0  Intel Corporation I210 Gigabit Network Connection
           +-1c.6-[07-08]----00.0-[08]----00.0  ASPEED Technology, Inc. ASPEED Graphics Family
           +-1f.0  Intel Corporation Sunrise Point-H LPC Controller
           +-1f.2  Intel Corporation Sunrise Point-H PMC
           \-1f.4  Intel Corporation Sunrise Point-H SMBus

Answer 1

使用GNU作为第三位arg到match()

$ cat tst.awk
!/Network|Ethernet/ { next }
match($0,/.*\[([0-9]+)\]/,a) {
    nic = a[1]
}
match($0,/.*[+-\\]-([0-9]+\.[0-9]+)  /,a) {
    print nic ":" a[1]
}
$
$ awk -f tst.awk file
03:00.0
03:00.1
03:00.2
03:00.3
04:00.0
04:00.1
05:00.0
06:00.0