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Top Forums Shell Programming and Scripting Running a script with multiple variables like 25 variables. Post 302863431 by rbatte1 on Monday 14th of October 2013 07:42:51 AM
Old 10-14-2013
You also need to be away that referring to positional parameter $25 will usually end up being interpreted as ${2}5, i.e. the value of parameter two, followed by the literal value 5.

Someone in their wisdom here managed to code scripts that look like this:-
Code:
date_req=$22013

The idea being that the month is passed in as positional parameter 2 and the year is appended. Apart from looking awful, of course we then ended up editing the script each year - oh, and the year was not necessarily the calender year that the process was running in either.

It works for us (very badly and will be replaced soon) but you might get very confused by the use of:-
Code:
title=$25
echo $title

.... giving you the output gM5




Robin
Liverpool/Blackburn
UK
 

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MP3::Tag::CDDB_File(3pm)				User Contributed Perl Documentation				  MP3::Tag::CDDB_File(3pm)

NAME
MP3::Tag::CDDB_File - Module for parsing CDDB files. SYNOPSIS
my $db = MP3::Tag::CDDB_File->new($filename, $track); # Name of audio file my $db = MP3::Tag::CDDB_File->new_from($record, $track); # Contents of CDDB ($title, $artist, $album, $year, $comment, $track) = $db->parse(); see MP3::Tag DESCRIPTION
MP3::Tag::CDDB_File is designed to be called from the MP3::Tag module. It parses the content of CDDB file. The file is found in the same directory as audio file; the list of possible file names is taken from the field "cddb_files" if set by MP3::Tag config() method. parse() ($title, $artist, $album, $year, $comment, $track) = $db->parse($what); parse_filename() extracts information about artist, title, track number, album and year from the CDDB record. $what is optional; it maybe title, track, artist, album, year, genre or comment. If $what is defined parse() will return only this element. Additionally, $what can take values "artist_collection" (returns the value of artist in the disk-info field DTITLE, but only if author is specified in the track-info field TTITLE), "title_track" (returns the title specifically from track-info field - the "track" may fall back to the info from disk-info field), "comment_collection" (processed EXTD comment), "comment_track" (processed EXTT comment). The returned year and genre is taken from DYEAR, DGENRE, EXTT, EXTD fields; recognized prefixes in the two last fields are YEAR, ID3Y, ID3G. The declarations of this form are stripped from the returned comment. An alternative syntax "Recorded"/"Recorded on"/"Recorded in"/ is also supported; the format of the date recognized by ID3v2::year(), or just a date field without a prefix. title() $title = $db->title(); Returns the title, obtained from the 'Tracktitle' entry of the file. artist() $artist = $db->artist(); Returns the artist name, obtained from the 'Performer' or 'Albumperformer' entries (the first which is present) of the file. track() $track = $db->track(); Returns the track number, stored during object creation, or queried from the parent. year() $year = $db->year(); Returns the year, obtained from the 'Year' entry of the file. (Often not present.) album() $album = $db->album(); Returns the album name, obtained from the 'Albumtitle' entry of the file. comment() $comment = $db->comment(); Returns the 'Trackcomment' entry of the file. (Often not present.) genre() $genre = $db->genre($filename); perl v5.14.2 2009-04-15 MP3::Tag::CDDB_File(3pm)
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