@CarloM: I think he/she wanted the maxoct4 of all lines with maxoct3. If there were a line e.g. x.x.21.238 BEFORE maxoct3, that awk would print xxx.xxx.25.238, which is not contained in the input file.
RudiC,
You're obviously correct. But, we could use CarloM's approach to the problem to avoid the need to sort the input:
As always, if someone wants to try this on a Solaris/SunOS system, they need to use /usr/xpg4/bin/awk, /usr/xpg6/bin/awk, or nawk instead of awk.
This User Gave Thanks to Don Cragun For This Post:
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