我从 aws 得到了这个输出:
$ aws ec2 describe-instances --filters "Name=instance-type,Values=c4.xlarge" | egrep -e "Value" -e "PrivateIpAddress" | grep bot -B1
"PrivateIpAddress": "10.100.2.44"
"Value": "bot-30",
--
"PrivateIpAddress": "10.100.2.106"
"Value": "bot-29",
--
"PrivateIpAddress": "10.100.2.167"
"Value": "bot-1",
--
"PrivateIpAddress": "10.100.2.161"
"Value": "bot-14",
--
"PrivateIpAddress": "10.100.2.235"
"Value": "bot-17",
--
"PrivateIpAddress": "10.100.2.54"
"Value": "bot-28",
--
"PrivateIpAddress": "10.100.2.234"
"Value": "bot-12",
--
"PrivateIpAddress": "10.100.2.43"
"Value": "bot-5",
--
"PrivateIpAddress": "10.100.2.50"
"Value": "bot-27",
--
"PrivateIpAddress": "10.100.2.124"
"Value": "bot-20",
--
"PrivateIpAddress": "10.100.2.247"
"Value": "bot-26",
--
"PrivateIpAddress": "10.100.2.113"
"Value": "bot-8",
--
"PrivateIpAddress": "10.100.2.190"
"Value": "bot-11",
--
"PrivateIpAddress": "10.100.2.184"
"Value": "bot-13",
--
"PrivateIpAddress": "10.100.2.253"
"Value": "bot-25",
--
"PrivateIpAddress": "10.100.2.254"
"Value": "bot-2",
--
"PrivateIpAddress": "10.100.2.199"
"Value": "bot-21",
--
"PrivateIpAddress": "10.100.2.130"
"Value": "bot-10",
--
"PrivateIpAddress": "10.100.2.59"
"Value": "bot-18",
--
"PrivateIpAddress": "10.100.2.4"
"Value": "bot-7",
--
"PrivateIpAddress": "10.100.2.213"
"Value": "bot-9",
--
"PrivateIpAddress": "10.100.2.214"
"Value": "bot-3",
--
"PrivateIpAddress": "10.100.2.200"
"Value": "bot-24",
--
"PrivateIpAddress": "10.100.2.148"
"Value": "bot-15",
--
"PrivateIpAddress": "10.100.2.146"
"Value": "bot-6",
--
"PrivateIpAddress": "10.100.2.94"
"Value": "bot-4",
--
"PrivateIpAddress": "10.100.2.150"
"Value": "bot-23",
--
"PrivateIpAddress": "10.100.2.81"
"Value": "bot-16",
--
"PrivateIpAddress": "10.100.2.155"
"Value": "bot-22",
--
"PrivateIpAddress": "10.100.2.102"
"Value": "bot-19",
我想格式化成下面的
10.100.2.44 bot-30
10.100.2.106 bot-29
10.100.2.167 bot-1
我需要这种格式的原因是因为我想在 /etc/hosts 文件中添加所有这些主机名和 IP 地址。这只是一个小列表，但我们也有很长的列表
最佳答案
您可以通过管道将您的 aws 命令传递给此 sed:
sed -n '/PrivateIpAddress/N;s/.*"\([^"]*\)"\n.*"\(.*\)",.*/\1\t\2/p'
关于regex - sed 正则表达式提取字段并构建新的，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/42680529/