[CentOS] Define an alias with an embeded awk command
Les Mikesell
lesmikesell at gmail.com
Tue Dec 15 21:50:27 UTC 2009
m.roth at 5-cent.us wrote:
>> m.roth at 5-cent.us wrote:
>>> Simpler, and more obvious to read:
>>>
>>> /sbin/ifconfig eth0 | awk '{if ( $0 ~ /inet addr:/ ) {print
>>> substr($2,6)}}'
>> That's only obvious to the couple of people who speak awk... (Probably
>> about the same number that use the C shell that started this problem).
>>
>> With more generic regexps it would be:
>>
>> ifconfig eth0 |sed -n -e 's/\(.*inet addr:\)\([0-9.]*\)\(.*\)/\2/p'
>
> Right, and that's obvious to the meanest intelligence, while "if what I
> read in has this, then print this part of that field" is sooo complicated.
>
> Are you willing to agree to differ, and stop attacking me, when I give one
> awk script to replace 3-4 commands?
>
It wasn't an attack - and the one sed command does the same thing with
an even more lightweight program. And perl could do it without running
ifconfig.
--
Les Mikesell
lesmikesell at gmail.com
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