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Top Forums UNIX for Dummies Questions & Answers Exclude lines which have blanks at certain positions Post 302248641 by MrC on Sunday 19th of October 2008 01:06:41 AM
Old 10-19-2008
Code:
$ cat data
123456789012345678901234567890123456789012345678901234567890
123456789012345678901234567890123456789012345678901234     0

$ perl -ne 'print unless $_ =~ /^.{54} {5}/' data
123456789012345678901234567890123456789012345678901234567890

Pipe the output of this to your sort routine, or sort directly in perl.
MrC
 

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UNEXPAND(1)							   User Commands						       UNEXPAND(1)

NAME
unexpand - convert spaces to tabs SYNOPSIS
unexpand [OPTION]... [FILE]... DESCRIPTION
Convert blanks in each FILE to tabs, writing to standard output. With no FILE, or when FILE is -, read standard input. Mandatory arguments to long options are mandatory for short options too. -a, --all convert all blanks, instead of just initial blanks --first-only convert only leading sequences of blanks (overrides -a) -t, --tabs=N have tabs N characters apart instead of 8 (enables -a) -t, --tabs=LIST use comma separated LIST of tab positions (enables -a) --help display this help and exit --version output version information and exit GNU coreutils online help: <http://www.gnu.org/software/coreutils/> Report unexpand translation bugs to <http://translationpro- ject.org/team/> AUTHOR
Written by David MacKenzie. COPYRIGHT
Copyright (C) 2013 Free Software Foundation, Inc. License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html>. This is free software: you are free to change and redistribute it. There is NO WARRANTY, to the extent permitted by law. SEE ALSO
expand(1) The full documentation for unexpand is maintained as a Texinfo manual. If the info and unexpand programs are properly installed at your site, the command info coreutils 'unexpand invocation' should give you access to the complete manual. GNU coreutils 8.22 June 2014 UNEXPAND(1)
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