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Uppercase to lowercase

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# 1  
Old 10-31-2012
Question Uppercase to lowercase
Hello,

I have a list of files in a directory whose names are all in uppercasse, including the file format for eg *.MP3 . I would like to convert these to the normal way we write it ie ABC.MP3 to be converted to Abc.mp3 . I know that this can be done manually by using a lot of "mv" or rename operations, but is there any automated way to do it ? Like a shell script ?
# 2  
Old 10-31-2012
Hi

Code:
ls *.MP3 | perl -lne 'rename $_,ucfirst(lc($_));'


OR
If you have GNU sed:

Code:
ls *.MP3 | sed 's/\(.*\)\.MP3/mv "&" "\L\u\1.mp3"/'  | sh

Guru.
# 3  
Old 10-31-2012
First character lower case
Hello,

This worked, but only that the entire filename got converted to lowercase, I would like the first character to still be in uppercase.
# 4  
Old 10-31-2012
Code:
perl -e '
chdir "/path/to/your/directory" or die "Cannot chdir ($!)\n";
for (<*.MP3>) {
 if(-f) {
  $old=$_;
  $new=ucfirst lc $old;
  print "Renaming $old to $new\n";
  #print "Renaming $old to $new unsuccessful ($!)\n" unless rename $old => $new;
 }
}'

Uncomment the rename line if the printed lines seem OK.
# 5  
Old 10-31-2012
Thank you
Hello,


guruprasadpr s shell script worked , thank you ,
# 6  
Old 10-31-2012
You can do it first letter capitalization easily from within Bash.

For example:
Code:
FirstCap()
{
   lower=${1,,}
   echo ${lower^}
}

ls -1 *.MP3  |  while read filename
do
      FirstCap  $filename
done

This User Gave Thanks to fpmurphy For This Post:
elixir_sinari
# 7  
Old 11-01-2012
Quote:
Originally Posted by fpmurphy
You can do it first letter capitalization easily from within Bash.

For example:
Code:
FirstCap()
{
   lower=${1,,}
   echo ${lower^}


These require bash4.
Quote:
Code:
}

ls -1 *.MP3  |  while read filename


First, -1 is not necessary since the output of ls is not going to a terminal.

Second, ls is not necessary:
Code:
for filename in *.MP3

Quote:
Code:
do
      FirstCap  $filename
done

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