获取字符串中的mac地址

ziyema

小弟用ps aux |grep qemu |grep -v grep 命令后获取到虚拟机进程如下：

qemu     29109  5.4  1.3 3370700 1747280 ?     Sl    2014 60742:30 /usr/libexec/qemu-kvm -name kvm-0000007e -S -M rhel6.4.0 -enable-kvm -m 2048 -smp 1,sockets=1,cores=1,threads=1 -uuid f251dea1-c166-4b22-8379-463d8b29a41c -nodefconfig -nodefaults -chardev socket,id=charmonitor,path=/var/lib/libvirt/qemu/kvm-0000007e.monitor,server,nowait -mon chardev=charmonitor,id=monitor,mode=control -rtc base=utc -no-shutdown -device piix3-usb-uhci,id=usb,bus=pci.0,addr=0x1.0x2 -drive file=/home/instances/kvm-0000007e/disk,if=none,id=drive-virtio-disk0,format=qcow2,cache=none -device virtio-blk-pci,scsi=off,bus=pci.0,addr=0x4,drive=drive-virtio-disk0,id=virtio-disk0,bootindex=1 -netdev tap,fd=27,id=hostnet0 -device rtl8139,netdev=hostnet0,id=net0,mac=fa:16:3e:41:50:f4,bus=pci.0,addr=0x3 -chardev file,id=charserial0,path=/home/instances/kvm-0000007e/console.log -device isa-serial,chardev=charserial0,id=serial0 -chardev pty,id=charserial1 -device isa-serial,chardev=charserial1,id=serial1 -device usb-tablet,id=input0 -vnc 0.0.0.0:8 -k en-us -vga cirrus -device virtio-balloon-pci,id=balloon0,bus=pci.0,addr=0x5

qemu     29641  7.9  3.2 5751092 4308680 ?     Sl    2014 89692:47 /usr/libexec/qemu-kvm -name kvm-00000079 -S -M rhel6.4.0 -enable-kvm -m 4096 -smp 2,sockets=2,cores=1,threads=1 -uuid 54fd3d21-2551-4444-8f65-836d684b7635 -nodefconfig -nodefaults -chardev socket,id=charmonitor,path=/var/lib/libvirt/qemu/kvm-00000079.monitor,server,nowait -mon chardev=charmonitor,id=monitor,mode=control -rtc base=utc -no-shutdown -device piix3-usb-uhci,id=usb,bus=pci.0,addr=0x1.0x2 -drive file=/home/instances/kvm-00000079/disk,if=none,id=drive-virtio-disk0,format=qcow2,cache=none -device virtio-blk-pci,scsi=off,bus=pci.0,addr=0x4,drive=drive-virtio-disk0,id=virtio-disk0,bootindex=1 -netdev tap,fd=27,id=hostnet0 -device rtl8139,netdev=hostnet0,id=net0,mac=fa:16:3e:3c:68:0f,bus=pci.0,addr=0x3 -chardev file,id=charserial0,path=/home/instances/kvm-00000079/console.log -device isa-serial,chardev=charserial0,id=serial0 -chardev pty,id=charserial1 -device isa-serial,chardev=charserial1,id=serial1 -device usb-tablet,id=input0 -vnc 0.0.0.0:5 -k en-us -vga cirrus -device virtio-balloon-pci,id=balloon0,bus=pci.0,addr=0x5
qemu     34928  5.5  1.1 5050996 1526428 ?     Sl    2015 38472:45 /usr/libexec/qemu-kvm -name kvm-000000d1 -S -M rhel6.4.0 -enable-kvm -m 4096 -smp 2,sockets=2,cores=1,threads=1 -uuid 717b1a48-4021-452e-a28c-8c8b4877e9d4 -nodefconfig -nodefaults -chardev socket,id=charmonitor,path=/var/lib/libvirt/qemu/kvm-000000d1.monitor,server,nowait -mon chardev=charmonitor,id=monitor,mode=control -rtc base=utc -no-shutdown -device piix3-usb-uhci,id=usb,bus=pci.0,addr=0x1.0x2 -drive file=/home/instances/kvm-000000d1/disk,if=none,id=drive-virtio-disk0,format=qcow2,cache=none -device virtio-blk-pci,scsi=off,bus=pci.0,addr=0x4,drive=drive-virtio-disk0,id=virtio-disk0,bootindex=1 -netdev tap,fd=36,id=hostnet0 -device rtl8139,netdev=hostnet0,id=net0,mac=fa:16:3e:45:e1:8f,bus=pci.0,addr=0x3 -chardev file,id=charserial0,path=/home/instances/kvm-000000d1/console.log -device isa-serial,chardev=charserial0,id=serial0 -chardev pty,id=charserial1 -device isa-serial,chardev=charserial1,id=serial1 -device usb-tablet,id=input0 -vnc 0.0.0.0:2 -k en-us -vga cirrus -device virtio-balloon-pci,id=balloon0,bus=pci.0,addr=0x5

想输出如下：
f251dea1-c166-4b22-8379-463d8b29a41c   fa:16:3e:41:50:f4
54fd3d21-2551-4444-8f65-836d684b7635   fa:16:3e:3c:68:0f
717b1a48-4021-452e-a28c-8c8b4877e9d4   fa:16:3e:45:e1:8f

sunzhiguolu

回复 1# ziyema

1. perl -nle 'BEGIN{$,=" "}{next if(m/\A\s*\z/);print m/(?<=-uuid )(\S+)|(?<=mac=)([^,]+)/g}' f

复制代码

f251dea1-c166-4b22-8379-463d8b29a41c   fa:16:3e:41:50:f4
54fd3d21-2551-4444-8f65-836d684b7635   fa:16:3e:3c:68:0f
717b1a48-4021-452e-a28c-8c8b4877e9d4   fa:16:3e:45:e1:8f


   

sunzhiguolu

1. perl -nle 'BEGIN{$"=" "}{print "@a" if(@a=m/(?<=-uuid )(\S+)|(?<=mac=)([^,]+)/g)}' f

复制代码

f251dea1-c166-4b22-8379-463d8b29a41c   fa:16:3e:41:50:f4
54fd3d21-2551-4444-8f65-836d684b7635   fa:16:3e:3c:68:0f
717b1a48-4021-452e-a28c-8c8b4877e9d4   fa:16:3e:45:e1:8f

haooooaaa

1. awk -vRS='[ =,]' '/uuid/{getline;s=$0}/mac/{getline;print s,$0}' file
   
2. f251dea1-c166-4b22-8379-463d8b29a41c fa:16:3e:41:50:f4
   
3. 54fd3d21-2551-4444-8f65-836d684b7635 fa:16:3e:3c:68:0f
   
4. 717b1a48-4021-452e-a28c-8c8b4877e9d4 fa:16:3e:45:e1:8f
   

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Herowinter

回复 1# ziyema

1. 
   
2. grep -Po "(?<=uuid |mac=)[\w-:]*" i|xargs -n2
   
3. f251dea1-c166-4b22-8379-463d8b29a41c fa:16:3e:41:50:f4
   
4. 54fd3d21-2551-4444-8f65-836d684b7635 fa:16:3e:3c:68:0f
   
5. 717b1a48-4021-452e-a28c-8c8b4877e9d4 fa:16:3e:45:e1:8f
   

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sunzhiguolu

回复 5# Herowinter
请教下大神, grep -P 的 Look Behind 进化了吗, 比 perl 的都好.

   

jason680

回复 1# ziyema

$ perl -lane '{if(m/-uuid ([^ ]+).*,mac=([^,]+),/){print "$1 $2"}}' FILE

$ awk 'match($0,"-uuid ([^ ]+).*,mac=([^,]+),",a){print a[1],a[2]}' FILE

f251dea1-c166-4b22-8379-463d8b29a41c fa:16:3e:41:50:f4
54fd3d21-2551-4444-8f65-836d684b7635 fa:16:3e:3c:68:0f
717b1a48-4021-452e-a28c-8c8b4877e9d4 fa:16:3e:45:e1:8f

   

Herowinter

回复 6# sunzhiguolu

-P就是perl正则, 应该一样的呀,
我perl不熟, 不是很清楚.

   

sunzhiguolu

回复 8# Herowinter
同样的用法, 在 perl 中就不行了,

perl -nle 'BEGIN{$"=" "}{print "@a" if(@a=m/(?<=-uuid |mac=)([-\w:]+)/g)}' f
Variable length lookbehind not implemented in regex m/(?<=-uuid |mac=)([-\w:]+)/ at -e line 1.

   

sunzhiguolu

回复 7# jason680
大神, grep -P 的 Look Behind 是不是在 perl 的基础上某些方面增强了, 还请您指点下, 谢谢...