帮忙看看awk语句哪里错了？【已解决】

bao_m

gawk --re-interval '/[a-zA-Z]{4}/ {if ($1!~/[a-zA-Z]{5,}/) print $1}' abc.data

[root@magw ~]# gawk -W version
GNU Awk 3.1.3
Copyright (C) 1989, 1991-2003 Free Software Foundation.

This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.

This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
GNU General Public License for more details.

You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
[root@magw ~]#

gqin

awk '{if(length($1)==4 && $1~/[a-zA-Z]+/)print $1}'  ufile

guoyazhou

都是强拧呀！

anlrj

你看看这样行吗？

awk '$1 ~/^[a-zA-Z]{4}$/{print $1}' abc.data