By setting mp3 to a list of filenames containing .mp3 and then expanding $mp3 in the for loop, you went through the loop seven times for the file named:
with file set to "Tom", "Petty", "-", "Running", "Down", "a", and "Dream.mp3" instead of going through the loop once with file set to "Tom Petty - Running Down a Dream.mp3" which I did by letting the shell expand the list of filenames ending in .mp3 in the for loop.
Thanks again for the help, that enabled me to fiddle around with the code until I managed to do what needed to get done
I have seen this done before - and maybe there is a better way too.
I want to be abe to use a for loop (or other better method) to loop through the database instance names that are part of the script - not an external file where a read might be ok.
Here is what I have and I know won't work -... (5 Replies)
Can anyone tell me what's wrong with my code here? I'm experiencing weird behavior...
I am using 'j' to go down a list filenames saved in a .txt file and prompting the user whether or not she would like to delete each one. This works all well and fine the first run through, but then instead of... (2 Replies)
i don't get what's wrong here. i'm writing a shell script that takes 1 argument (a number) from the command-line, but it's throwing an error:
Syntax error: Bad for loop variable
doesn't make much sense
for (( i = 1; i = ${1}; i++ )) # error points to this line everytime
do
echo... (9 Replies)
When I run the following command in the shell it works fine. It prints a city name and then a path for a file.
~$ for i in `awk -F':' '{print $0}' /home/knoppix/Desktop/data/subs | grep -m 1 $ city | sed "s/:/ /"`
>do
>echo $i
>done
Now, when I place it in this shell script (sh) it prints... (6 Replies)
Hi again :)
I still need your help now...
#!/bin/bash
SIZE=`ls -s text.txt`
while
do
done
My problem is that the line "while ..." still print the same value after the first loop.
In one instruction change the size of text.txt
I've run my bash script in debug mode, and the... (6 Replies)
HI there,
I am trying to count manually what this code does but I am stuck and I don't learly see the result. The code works and it compiles and runs but I just don't follow the value of var.
#include<stdio.h>
#include<stdlib.h>
#include<sys/types.h>
#include<unistd.h>
#include<wait.h>... (2 Replies)
#!/bin/bash
function check_num_args()
{
if ; then
echo "Please provide a file name"
else
treat_as_file $*
fi
}
function treat_as_file()
{
numFiles=$#
for((i=1;i<=$numFiles;i++));do
echo $i
... (3 Replies)
I have the text file where each line has the format:
chr10 101418889 101418904 0.816327
Right now the interval between column 2 and 3 is 15. I only want the two consecutive positions starting at position 1, write it to a file, then move up one position write to file etc. So that:
... (1 Reply)
Discussion started by: jfern
1 Replies
LEARN ABOUT DEBIAN
mp3::tag::file
MP3::Tag::File(3pm) User Contributed Perl Documentation MP3::Tag::File(3pm)NAME
MP3::Tag::File - Module for reading / writing files
SYNOPSIS
my $mp3 = MP3::Tag->new($filename);
($title, $artist, $no, $album, $year) = $mp3->parse_filename();
see MP3::Tag
DESCRIPTION
MP3::Tag::File is designed to be called from the MP3::Tag module.
It offers possibilities to read/write data from files via read(), write(), truncate(), seek(), tell(), open(), close(); one can find the
filename via the filename() method.
parse_filename()
($title, $artist, $no, $album, $year) = $mp3->parse_filename($what, $filename);
parse_filename() tries to extract information about artist, title, track number, album and year from the filename. (For backward
compatibility it may be also called by deprecated name read_filename().)
This is likely to fail for a lot of filenames, especially the album will be often wrongly guessed, as the name of the parent directory
is taken as album name.
$what and $filename are optional. $what maybe title, track, artist, album or year. If $what is defined parse_filename() will return
only this element.
If $filename is defined this filename will be used and not the real filename which was set by MP3::Tag with "MP3::Tag->new($filename)".
Otherwise the actual filename is used (subject to configuration variable "decode_encoding_filename").
Following formats will be hopefully recognized:
- album name/artist name - song name.mp3
- album_name/artist_name-song_name.mp3
- album.name/artist.name_song.name.mp3
- album name/(artist name) song name.mp3
- album name/01. artist name - song name.mp3
- album name/artist name - 01 - song.name.mp3
If artist or title end in "(NUMBER)" with 4-digit NUMBER, it is considered the year.
title()
$title = $mp3->title($filename);
Returns the title, guessed from the filename. See also parse_filename(). (For backward compatibility, can be called by deprecated name
song().)
$filename is optional and will be used instead of the real filename if defined.
artist()
$artist = $mp3->artist($filename);
Returns the artist name, guessed from the filename. See also parse_filename()
$filename is optional and will be used instead of the real filename if defined.
track()
$track = $mp3->track($filename);
Returns the track number, guessed from the filename. See also parse_filename()
$filename is optional and will be used instead of the real filename if defined.
year()
$year = $mp3->year($filename);
Returns the year, guessed from the filename. See also parse_filename()
$filename is optional and will be used instead of the real filename if defined.
album()
$album = $mp3->album($filename);
Returns the album name, guessed from the filename. See also parse_filename() The album name is guessed from the parent directory, so it
is very likely to fail.
$filename is optional and will be used instead of the real filename if defined.
comment()
$comment = $mp3->comment($filename); # Always undef
genre()
$genre = $mp3->genre($filename); # Always undef
perl v5.14.2 2009-11-28 MP3::Tag::File(3pm)