Question

我从命令输出的格式如下：

Ethernet STATISTICS (ent0) :
Device Type: 2-Port 10/100/1000 Base-TX PCI-X Adapter (14108902)
Hardware Address: 00:09:6b:6e:5d:50
Transmit Statistics:                          Receive Statistics:
--------------------                          -------------------
Packets: 0                                    Packets: 0
Bytes: 0                                      Bytes: 0
Interrupts: 0                                 Interrupts: 0
Transmit Errors: 0                            Receive Errors: 0
Packets Dropped: 0       
ETHERNET STATISTICS (ent1) :
Device Type: 2-Port 10/100/1000 Base-TX PCI-X Adapter (14108902)
Hardware Address: 00:09:6b:6e:5d:50
Transmit Statistics:                          Receive Statistics:
--------------------                          -------------------
Packets: 30                                   Packets: 0
Bytes: 1800                                   Bytes: 0
Interrupts: 0                                 Interrupts: 0
Transmit Errors: 0                            Receive Errors: 0
Packets Dropped: 0                            Packets Dropped: 0
                                              Bad Packets: 0

我需要将与ent0关联的数据包的数量和与ent1关联的数据包的数量保存到变量。我需要使用awk执行此任务，虽然我知道如何提取数据包的数量，但我不知道如何将它与在其上面列出的几行相关的适配器（ent0或ent1）相关联。好像我需要使用某种嵌套循环但不知道如何在awk中执行此操作。

Answer 1

怎么样：

# list all ent's and there counts 
$ awk '/ent[0-9]+/{e=$3}/^Packets:/{print e,$2}' file
(ent0) 0
(ent1) 30

# list only the count for a given ent 
$ awk '/ent0/{e=$3}/^Packets:/&&e{print $2;exit}' file
0

$ awk '/ent1/{e=$3}/^Packets:/&&e{print $2;exit}' file
30

<强>解释

第一个脚本打印所有ent's以及传输的数据包计数：

/ent[0-9]+/        # For lines that contain ent followed by a digit string
{
   e=$3            # Store the 3rd field in variable e
}
/^Packets:/        # Lines that start with Packet:
{
   print e,$2      # Print variable e followed by packet count (2nd field)
}

第二个脚本仅打印给定ent的计数：

/ent0/             # For lines that match ent0
{
   e=$3            # Store the 3rd field 
}
/^Packets:/&&e     # If line starts with Packets: and variable e set 
{
   print $2        # Print the packet count (2nd field)
   exit            # Exit the script 
}

您可以在bash中使用命令替换来将值存储在shell变量中：

$ entcount=$(awk '/ent1/{e=$3}/^Packets:/&&e{print $2;exit}' file)

$ echo $entcount 
30

-v的{{1}}选项传入变量：

awk

需要awk脚本来解析ethernet statistics命令的输出

1 个答案: