Persistent Network in CentOS

[kidboy]

Hi, i want to know two thins. First in CentOS 6 when we change a card network and want to reset the identification os system, we just delete the /etc/udev/rules.d/70-persistent-net.rules, restart the system and its redefined, in CentOS 7 how can i do this ? Second how i can find the UUID of a network card ?

[stephenw]

Hello

Try using grep to find the UUID

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grep /etc/sysconfig/network-scripts/ifcfg-<device>

or as per tip on Stackoverflow:

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egrep --color 'pattern|$' file

Then try grep the `usr/lib/udev/rules.d/` directory to see which file has the UUID