Re: about matrix text editing

[Colin Watson <cjwatson@debian.org>]

On Mon, Mar 10, 2003 at 04:02:47AM +0900, Youichi Mano wrote:
> I want to extract the lines of which the specified column is matched
> by command line programs(grep,cut,wc,...) not any script file.
> 
> For example, there is tab separated matrix text like the following.
> and I want to extract of which the value of column number 2 is "111".
> ------------------------
> a	1957	111
> b	1902	222
> c	2001	111
> ------------------------
> 
> i.e. the output will be
> ----------------
> a	1957	111
> c	2001	111
> ----------------
> 
> Such a editing is easy in perl script but I cannot easily do that
> in command line. 

Sure you can. Use perl's -e option.

  perl -nle 'my @cols = split /\t/; print if $cols[2] eq "111"'

Cheers,

-- 
Colin Watson                                  [cjwatson@flatline.org.uk]