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Full Discussion: First Script Syntax Error
Top Forums Shell Programming and Scripting First Script Syntax Error Post 302948303 by D351 on Sunday 28th of June 2015 02:13:00 PM
Old 06-28-2015
Quote:
Originally Posted by RudiC
Some comments on your code snippet:
Code:
files=(ls *.mp3)                # this will define & assign an array: (ls a.mp3 b.mp3 c.mp3 ...). You'd need to use it like an array in the for loop, then. 
                                # you might prefer command substitution: files=$(ls *.mp3)
                                # or let the shell do the work for you: files=*.mp3
for song in $files              # this will expand to the first array element: ls. If you want the .mp3 files as well, use array expansion: ${files[@]} if you don't like above proposals
 echo "${song%%*(.mp3)}"        # Why the * and the parentheses? You want to remove nothing but ".mp3", and once only, so one "%" is sufficient
 touch "${song%%*(.mp3)}"       # "${song%.mp3}" will do the job for you. "%*.mp3"  would erase the entire file name, the parentheses can't be matched
                                # and thus stop the expansion.  
                                # You are right in double quoting the file names which will handle spaces in file names, then.
done

I've been cobbling this together from different tutorials found via duckduckgo, so my usage of parenthesis and multiple symbols is sketchy, but based on your advice, I now have:
Code:
#!/bin/bash
#This will create blank lyric files, as used by mocp, for all mp3s in a directory

files=*.mp3
for song in ${files[*]}
do
 echo "${song%.mp3}"
 touch "${song%.mp3}"
done

which appears to be working perfectly. Thank you so much.
 

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LEARN ABOUT DEBIAN

fatsort

fatsort(1)						      General Commands Manual							fatsort(1)

NAME

       FATSort - FAT filesystem sorting utility

SYNOPSIS

       fatsort [options] device

DESCRIPTION

       FATsort sorts directory structures of FAT filesystems.  Many MP3 hardware players don't sort files automatically but play them in the order
       they were transmitted to the device. FATSort can help here.

OPTIONS

       -c     This option causes FATSort to ignore the case of filenames (e.g. 'example.mp3' is equal to 'EXAMPLE.MP3').

       -f     Force sorting even if the device is mounted or if FATSort cannot determine if the device is mounted.

       -h     Shows some help information.

       -i     Prints some file system information of the specified device.

       -l     FATSort will not sort directory structures, but just print the current order.

       -o type
	      This options specifies how FATSort will sort files and directories.  type can be 'd' for directories  before  files  (which  is  the
	      default), 'f' for files before directories, or 'a' for no differentiation between files and directories.

       -n     Uses natural order to sort directory structures instead of  alphanumeric order.  For example, an alphanumeric order would be
		     file123.mp3
		     file21.mp3
		     file3.mp3
	      and the corresponding natural order would be
		     file3.mp3
		     file21.mp3
		     file123.mp3.

       -q     FATSort will work quietly without printing additional information messages.

       -r     Sorts the directories in reverse order (Z-A).

       -R     Sorts the directories in random order.

       -v     Shows version information only.

       The following options can be specified multiple times:

       -d directory
	      Sort directory only

       -D directory
	      Sort directory and all subdirectories

       -x directory
	      Don't sort directory

       -X directory
	      Don't sort directory and all subdirectories

       -I prefix
	      Ignore  filename	prefix	prefix	during sorting. For example, passing option -I "the " tells FATSort to sort 'The Beatles.mp3' like
	      'Beatles.mp3'.

EXAMPLES

       Sort FAT filesystem on an USB stick:
	      fatsort /dev/sda1

       Sort FAT filesystem in a file:
	      fatsort /home/user/fat16_fs.img

       Sort directory /dir1 and all subdirectories except /dir1/dirA:
	      fatsort /dev/sda1 -D /dir1 -x /dir1/dirA

       Ignore prefixes 'a ' and 'the ' during sorting:
	      fatsort /dev/sda1 -I "a " -I "the "

AUTHOR

       Boris Leidner <fatsort(at)formenos.de>

SEE ALSO

       mount(8) fsck(8)

NOTES

       FAT12 is not supported yet.

REPORT BUGS

       Please report bugs to fatsort(at)formenos.de. Thanks.

FATSort 0.9.15							       2011								fatsort(1)
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