我有以下命令:
$ snmpnetstat -v2c -c public -Cs -Cp udp 10.10.0.32
具有终端输出:
udp:
198 total datagrams received
65 datagrams to invalid port
0 datagrams dropped due to errors
265 output datagram requests
我想编写一个返回以下内容的bash脚本:
bash脚本的期望输出:
Received Datagrams: 198
Invalid port:65
Dropped datagrams: 0
Datagram requests: 256
我开始于:
#!/bin/bash
rs="$(snmpnetstat -v2c -c public -Cs -Cp udp 10.10.0.32)"
ReceivedDatagrams=$(echo $rs | cut -d"/" -f1)
InvalidPort=$(echo $rs | cut -d"/" -f2)
DroppedDatagrams=$(echo $rs | cut -d"/" -f3)
DatagramRequests=$(echo $rs | cut -d"/" -f4)
echo "Received Datagrams:$ReceivedDatagrams Invalid port:$InvalidPort Dropped datagrams:$DroppedDatagrams Datagram requests:$DatagramRequests"
输出为:
zsz@bme-ib112-05:~/bash_scripts$ ./script.sh
Received Datagrams:udp: 242 total datagrams received 37 datagrams to invalid port 0 datagrams dropped due to errors 638 output datagram requests Invalid port:udp: 242 total datagrams received 37 datagrams to invalid port 0 datagrams dropped due to errors 638 output datagram requests Dropped datagrams:udp: 242 total datagrams received 37 datagrams to invalid port 0 datagrams dropped due to errors 638 output datagram requests Datagram requests:udp: 242 total datagrams received 37 datagrams to invalid port 0 datagrams dropped due to errors 638 output datagram requests
输出值不断重复,而不是我想要的。
我无法重新创建snmpnetstat
命令的确切输出,所以我只是将终端输出复制/粘贴到file中tmp
。
以下脚本使用您的逻辑来完成您要求的工作
我建议接受Shellter和Ed Morton的建议,并仔细研究报价变量如何工作以不允许在空格/换行符中进行扩展,并使用Awk作为更健壮和易于扩展的解决方案。
#!/bin/bash
rs="$(cat tmp)"
# You have to quote "$rs" so newlines don't break
ReceivedDatagrams="$(echo "$rs" | cut -d$'\n' -f2 | tr -s ' '| cut -d' ' -f2)"
InvalidPort="$(echo "$rs" | cut -d$'\n' -f3 | tr -s ' '| cut -d' ' -f2)"
DroppedDatagrams="$(echo "$rs" | cut -d$'\n' -f4 | tr -s ' '| cut -d' ' -f2)"
DatagramRequests="$(echo "$rs" | cut -d$'\n' -f5 | tr -s ' '| cut -d' ' -f2)"
echo "Received Datagrams:$ReceivedDatagrams"
echo "Invalid port:$InvalidPort"
echo "Dropped datagrams:$DroppedDatagrams"
echo "Datagram requests:$DatagramRequests"