Re^2: Match IP from 2nd line and Print Hostname from 1st line

It worked-

(\w+.+)
[download]

OUPUT

ip 10.1.1.1 goes with host name HOSTNAME-1A_1ST
ip 10.1.1.2 goes with host name HOSTNAME-1B_2ND
ip 10.3.1.1 goes with host name HOSTNAME-2A_1ST
ip 10.3.1.2 goes with host name HOSTNAME-2B_2ND
[download]

Thank you Corion.

Comment on Re^2: Match IP from 2nd line and Print Hostname from 1st line Select or Download Code

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Re^3: Match IP from 2nd line and Print Hostname from 1st line by Marshall (Canon) on Aug 01, 2016 at 17:31 UTC
In this case your modified expression works fine because there aren't any trailing blanks after the Hostname. If that happened, something like `"HOSTNAME-1A_1ST "` your expression would also pick up those extra spaces. To prevent that, you could use a character set, like `([\w\-]+)` That essentially adds "-" to the \w character set. Update: There is more than one way to write the regex. Another possibility would be `(\S+)` Changing one character (\w to \S) does a lot. That would match any non-whitespace character. So if some weirdo thing like "*" showed up, it would also be included. What you choose to implement depends both upon your actual data and personal preference.	[reply] [d/l] [select]
Re^4: Match IP from 2nd line and Print Hostname from 1st line by ArifS (Beadle) on Aug 02, 2016 at 14:39 UTC
That helps. Some good tips! Thank you Marshall.	[reply]