Convert uppercase to lowercase extensions

• Lowercase to Uppercase

  Convert text from lowercase to uppercase Show Sample Output

  This is sample output - yours may be different.

  TEST

  
  

  -2
  echo "test" | sed 'y/abcdefghijklmnopqrstuvwxyz/ABCDEFGHIJKLMNOPQRSTUVWXYZ/'
  lightuono · 2011-04-05 09:52:37 1
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• convert filenames in current directory to lowercase

  This will convert filenames from uppercase to lowercase. I find this useful after downloading images from my digital camera. This works for English, but other languages may need something slightly more complex like this: for i in *; do mv "$i" "$(echo $i|tr [:upper:] [:lower:])"; done Also, the quote marks aren't necessary if your filenames don't contain spaces.

  This is sample output - yours may be different.

  
  

  5
  for i in *; do mv "$i" "$(echo $i|tr A-Z a-z)"; done
  mulad · 2009-02-18 21:29:28 1
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• convert uppercase to lowercase

  This is sample output - yours may be different.

  
  

  -1
  tr '[:upper:]' '[:lower:]' < input.txt > output.txt
  jonatasnona · 2013-03-14 19:14:09 2
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• convert uppercase filenames in current directory to lowercase

  as commented by Urk...

  This is sample output - yours may be different.

  
  

  1
  for x in *;do mv "$x" "`echo $x|tr [A-Z] [a-z]`";done
  frank514 · 2011-04-25 20:45:51 2
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Using bash results in an error: syntax error at (eval 1) line 1, near "."

rafar · 259 weeks and 2 days ago

I successfully changed to lowercase in Linux using bash. I merged your command with another I've just found: find . -type f -name '*.MP3' -print0 | xargs -0 rename 's/\.MP3$/\.mp3/'

rafar · 259 weeks and 2 days ago

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