我有一个通过我在系统上运行的命令创建的文件。创建文件后，我想从该文件中提取特定信息，但前提是它符合某些条件。
我的文件如下所示：
client: tc-xxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx
version: xxxx
uuid: xxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxx
user-uid: 10000
user: someuser
primary-server: xxx.xxx.xxx.xxx
operational-mode: normal
mac: XX:XX:XX:XX:XX:XX
locked-time: xx:xx:xx
ipaddr: xxx.xxx.xxx.xxx
hostname: tc-xxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx
connection-1: frdp::Green::Test
connection-0: frdp::Purple::Test
client: tc-xxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx
version: xxxx
uuid: xxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxx
user-uid: 10000
user: someuser
primary-server: xxx.xxx.xxx.xxx
operational-mode: normal
mac: XX:XX:XX:XX:XX:XX
locked-time: xx:xx:xx
ipaddr: xxx.xxx.xxx.xxx
hostname: tc-xxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx
connection-0: frdp::Purple::Test
client: tc-xxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx
version: xxxx
uuid: xxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxx
user-uid: 10000
user: someuser
primary-server: xxx.xxx.xxx.xxx
operational-mode: normal
mac: XX:XX:XX:XX:XX:XX
locked-time: xx:xx:xx
ipaddr: xxx.xxx.xxx.xxx
hostname: tc-xxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx
client: tc-xxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx
version: xxxx
uuid: xxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxx
user-uid: 10000
user: someuser
primary-server: xxx.xxx.xxx.xxx
operational-mode: normal
mac: XX:XX:XX:XX:XX:XX
locked-time: xx:xx:xx
ipaddr: xxx.xxx.xxx.xxx
hostname: tc-xxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx
connection-0: frdp::Purple::Test
client: tc-xxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx
version: xxxx
uuid: xxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxx
user-uid: 10000
user: someuser
primary-server: xxx.xxx.xxx.xxx
operational-mode: normal
mac: XX:XX:XX:XX:XX:XX
locked-time: xx:xx:xx
ipaddr: xxx.xxx.xxx.xxx
hostname: tc-xxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx
client: tc-xxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx
version: xxxx
uuid: xxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxx
user-uid: 10000
user: someuser
primary-server: xxx.xxx.xxx.xxx
operational-mode: normal
mac: XX:XX:XX:XX:XX:XX
locked-time: xx:xx:xx
ipaddr: xxx.xxx.xxx.xxx
hostname: tc-xxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx
connection-0: frdp::Purple::Test
client: tc-xxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx
version: xxxx
uuid: xxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxx
user-uid: 10000
user: someuser
primary-server: xxx.xxx.xxx.xxx
operational-mode: normal
mac: XX:XX:XX:XX:XX:XX
locked-time: xx:xx:xx
ipaddr: xxx.xxx.xxx.xxx
hostname: tc-xxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx
connection-0: frdp::Green::Test
client: tc-xxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx
version: xxxx
uuid: xxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxx
user-uid: 10000
user: someuser
primary-server: xxx.xxx.xxx.xxx
operational-mode: normal
mac: XX:XX:XX:XX:XX:XX
locked-time: xx:xx:xx
ipaddr: xxx.xxx.xxx.xxx
hostname: tc-xxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx
connection-1: frdp::Green::Test
connection-0: frdp::Purple::Test
我想将只显示与 Purple 连接的客户端主机名和没有连接的客户端提取到一个新文件中。我能够使用 awk 仅提取主机名或连接，但无法提取没有连接的特定主机名或连接。
编辑：我已将条目添加到文件中。
答案1
如果我正确理解了您的意思，那就是过滤掉除“紫色”之外的其他连接的客户端（在您的例子中只有“绿色”，但可能是其他颜色）。
以下命令用于grep删除带有“Purple”的行，tr生成一行并sed在“client”前放置换行符，最后grep删除带有“connection”的剩余行并仅为每个客户端选择所需的信息。
全部信息集：
< myfile grep -v 'Purple' | tr '\n' ' '| tr -s ' ' ' ' | sed "s/ client/\nclient/g" \
| grep -v 'connection'
主机名和后面列出的内容：
< myfile grep -v 'Purple' | tr '\n' ' '| tr -s ' ' ' ' | sed "s/ client/\nclient/g" \
| grep -v 'connection' | grep -o 'hostname: .*'
根据我所读的内容，您想要的只有主机名：
< myfile grep -v 'Purple' | tr '\n' ' '| tr -s ' ' ' ' | sed "s/ client/\nclient/g" \
| grep -v 'connection' | grep -o 'hostname: [^ ]*'
另一组（应该被过滤掉）的主机名和连接不是“紫色”：
< myfile grep -v 'Purple' | tr '\n' ' '| tr -s ' ' ' ' | sed "s/ client/\nclient/g" \
| grep 'connection' | grep -o 'hostname: .*'