[CentOS] Define an alias with an embeded awk command

m.roth at 5-cent.us m.roth at 5-cent.us
Tue Dec 15 21:07:12 UTC 2009


> 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?

       mark



More information about the CentOS mailing list