I need to tail -f just a few colums o a text file

ericcarlson · 01-30-2007, 07:08 AM

This file is in this format, which I tail -f from putty on a PC:

30-Jan-2007 13:03:28 Pwcws 1.30 [KSFH] ---- Entry ----
30-Jan-2007 13:03:28 Pwcws 1.30 [KSFH] Account:
30-Jan-2007 13:03:28 Pwcws 1.30 [KSFH] Collection: default
30-Jan-2007 13:03:28 Pwcws 1.30 [KSFH] User: (Anon)

I now have putty for the Nokia E61 and its screen is narrower. What I want to do is tail -f > {something} so that only the essential columns are shown, which in this case are:

13:03:28 ---- Entry ----
13:03:28 Account:
13:03:28 Collection: default
13:03:28 User: (Anon)

i.e. the 13th-22nd chars then the 40th to the line end. A cinch for you BASH veterans!!!! Thanks.

colucix · 01-30-2007, 07:23 AM

Code:

tail -f filename | gawk '{print substr($0,13,9),substr($0,40)}'

ericcarlson · 01-30-2007, 07:51 AM

Quote:

Originally Posted by colucix

Code:

tail -f filename | gawk '{print substr($0,13,9),substr($0,40)}'

Right first time - thanks!

ygloo · 01-30-2007, 03:07 PM

a simple one:

tail -f filename | awk '{ print $2, $6 }'