Linux在一行输出中打印多个IP地址（ifconfig

Question

这是标准的Linux ifconfig命令

user@linux:~$ ifconfig 
eth0      Link encap:Ethernet  HWaddr 00:00:00:00:00:10  
          inet addr:192.168.1.1  Bcast:192.168.56.255  Mask:255.255.255.0
          UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
          RX packets:112 errors:0 dropped:0 overruns:0 frame:0
          TX packets:93 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:1000 
          RX bytes:14616 (14.2 KiB)  TX bytes:17776 (17.3 KiB)

eth1      Link encap:Ethernet  HWaddr 00:00:00:00:00:11
          inet addr:10.0.1.1  Bcast:10.0.1.255  Mask:255.255.255.0
          UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
          RX packets:0 errors:0 dropped:0 overruns:0 frame:0
          TX packets:0 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:1000 
          RX bytes:0 (0.0 B)  TX bytes:0 (0.0 B)

user@linux:~$

这将仅从ifconfig打印IP地址

user@linux:~$ cat script.sh
ifconfig | grep ad.*Bc | cut -d: -f2 | awk '{ print $1}'
user@linux:~$ 

user@linux:~$ ./script.sh
192.168.1.1
10.0.1.1
user@linux:~$

user@linux:~$ ./script2.sh
192.168.1.1 10.0.1.1
user@linux:~$

是否可以使用ifconfig？如果是的话，我会很感激你能分享这个诀窍。谢谢

Answer 1

ifconfig | grep ad.*Bc | cut -d: -f2 | awk '{ print $1}' | { tr '\n' ' '; echo; }

您的代码几乎可以正常工作。只需将换行符转换为空格并添加更多的换行符。