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Full Discussion: If Condition in awk
Top Forums Shell Programming and Scripting If Condition in awk Post 302972261 by RudiC on Tuesday 3rd of May 2016 12:35:22 PM
Old 05-03-2016
I can't replicate the behaviour you describe. In your new input sample, $24 is NOT empty in any line. $24 already HAS the difference between $2 and $25. And, as said before, with multiple spaces as field separators, you can't detect empty fields.

I'm afraid I can't help.
 

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lltag_formats(5)						File Formats Manual						  lltag_formats(5)

NAME
formats - Internal formats database file for lltag DESCRIPTION
The internal format database is usually stored in /etc/lltag/formats. The user may override this file by defining a $HOME/.lltag/formats. If this file exists, the system-wide one is ignored. These files contain entries starting with a line such as: [%n - %a - %t] A title between bracket that will be displayed at runtime. Then, the following 3 lines must be given to explain how the format is actually used to parse filenames: type = basename The type is either basename (to parse the last part of the path to a file) or path (to parse the directory part of the path to a file). When actually parsing the path to target files, basename and path parsers will be assembled. All possible combination will be tried. regexp = %L%N%S-%S%A%S-%S%A%L A string composed of any characters, with the following special fields: %L for delimiter (empty by default, multiple spaces if --spaces was given) %S for a space (or multiple spaces if --spaces was given) %N for numbers %A for an alphanumeric string without / %P for any path (alphanumeric string with /) %% for % indices = NUMBER,ARTIST,TITLE A list of fields to match (either given by their full name or associated letter) corresponding to each %N or %A field in the previ- ous format. It may be AUTHOR (or a), ALBUM (A), GENRE (g), NUMBER (n), TITLE (t), DATE (d), COMMENT (c) or IGNORE (i). See also FORMAT in the manpage of lltag for details about these fields. SEE ALSO
lltag(1) AUTHOR
Brice Goglin NOVEMBER 2006 lltag_formats(5)
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