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Full Discussion: Create file and then change the extension case.
Homework and Emergencies Homework & Coursework Questions Create file and then change the extension case. Post 302362760 by Kdenmen on Saturday 17th of October 2009 11:34:11 AM
Old 10-17-2009
Create file and then change the extension case.
Interpreter should be bash.

1. The problem statement, all variables and given/known data:

I need to make a file (myText.txt or song.mp3 or cloud.tar.gz or whatever) and then change the extension to (myText.TXT , song.MP3, cloud.TAR.GZ).

It would be good if I can add all information in command line.

Example Input: sh scriptName.sh <file name.extension> <file name.NEWEXTENSION> or vice versa . If the file already exists it should say something.

2. Relevant commands, code, scripts, algorithms:

if [ ! -f $1 ] to check file exists


3. The attempts at a solution (include all code and scripts):

Code:
CreateFile(){
    if [ ! -f $1 ]
    then
        touch $1 > /dev/null 2>&1 && echo "File $1 created"
    else
        echo "Error: $1 file exists!"
    fi

[/SIZE][/FONT][/FONT]  [FONT=Verdana][SIZE=2]OLDEXT=${2/#.}
NEWEXT=${3/#.}

find "${1}" -iname "*.${OLDEXT}" |
while read F
do
  NEWFILE="${F/%${OLDEXT}/${NEWEXT}}"
  echo "mv \"${F}\" \"${NEWFILE}\""
  mv -f "${F}" "${NEWFILE}"
done

Some bitses, but I cant manage to make it all happen together.

4. School (University) and Course Number:
TTU, 1
Last edited by DukeNuke2; 10-17-2009 at 01:42 PM..
 

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LEARN ABOUT DEBIAN

mp3tag

MP3TAG(1)						      General Commands Manual							 MP3TAG(1)

NAME

       mp3tag - view and manipulate ID3v1 tags.

SYNOPSIS

       mp3tag [ -s song ] [ -a artist ] [ -l album ] [ -y year ] [ -e comment ] [ -k track ] [ -g genre ] [ -r ] file [ file ... ]

DESCRIPTION

       This manual page briefly documents the mp3tag command. This manual page was written for the Debian GNU/Linux distribution because the orig-
       inal program does not have one.

       mp3tag is a program that allows you to both view and manipulate ID3v1 metadata tags. Running the command with just a filename will  display
       the file's current tag. Setting some options will cause the tag to be updated and displayed.

OPTIONS

       -a artist
	      Set the artist name to artist. Strings over thirty characters are truncated.

       -e comment
	      Set the comment to comment. Strings over thirty characters are truncated.

       -g genre
	      Set  the	genre to genre. This is a single integer with a value of 0 to 254 corresponding to the appropriate Winamp compatible genre
	      (use '-g list' to list all supported genres).

       -k track
	      Set the track number to track. This is a single integer with a value of 0 to 255. Specifying this field truncates the comment  field
	      to twenty-eight characters, as per the ID3v1.1 standard.

       -l album
	      Set the album name to album. Strings over thirty characters are truncated.

       -r     Merge new tag with any preexisting tag in the file.

       -s song
	      Set the song name to song. Strings over thirty characters are truncated.

       -y year
	      Set the year to year. Strings over four characters are truncated.

EXAMPLES

       Display foo.mp3's current ID3v1 info:

	      mp3tag foo.mp3

       Set foo.mp3's artist to 'Bar', and album to 'Baz':

	      mp3tag -a Bar -l Baz foo.mp3

       Set foo.mp3's year to 2001, merging it with any tag already present:

	      mp3tag -y 2001 -r foo.mp3

AUTHOR

       mp3tag was written by Bram Avontuur <bram@avontuur.org>.

       This manual page was written by Brian Boucheron <brian@boucheron.org>, for the Debian GNU/Linux distribution (but may be used by others).

SEE ALSO

       More info on ID3v1 can be found at <http://www.id3.org/id3v1.html>.

								 February 19, 2004							 MP3TAG(1)
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