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Need to find files/folders with names longer than n characters (OS X 10.9.1).

Could you please help?

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The most basic way is probably to use globbing:

find . -type f -name '???????????*'

This will list all files with a filename length greater than 10 characters. There are 11 question marks, and the asterisk matches those with longer length. Modify the number of question marks to match what you're looking for.

For greater than or equal to 10, use ??????????*, or for equal to 10 use ??????????.

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    You can also do it by regex, but it's less efficient because find -regex matches against the whole path: find -E . -type f -regex '.*/[^/]{11,}' – pietrodn Dec 23 '13 at 19:45
  • → pietrodn: make this an answer, because it is a good one and scaling correctly to the variable nature of n in the OQ. – dan Dec 24 '13 at 10:52
  • @danielAzuelos done! :-) – pietrodn Dec 25 '13 at 21:52
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You can use the find command with the -regex (regular expression) option. This is probably less efficient than globbing, because -regex matches against the entire path.

find -E . \( -type f -or -type d \) -and -regex '.*/[^/]{11,}'

Precisely, this command does the following:

  • recursively searches for files in the current folder and in the subdirectories (you can limit the depth with an additional -maxdepth n clause);
  • uses the extended syntax (-E) for regexes.
  • searches for files and folders (-type f -or -type d)
  • regex match: the string which follows the last slash in the file path must be 11 characters or longer.
  • 11 characters or longer including the extension?, please explain why globbing is more efficient. – l'L'l Dec 25 '13 at 23:29
  • 11 character or longer including the extension, yes. I presume globbing is more efficient because it only matches against the filename and it doesn't use the full regex engine... but it's really only speculation. – pietrodn Dec 26 '13 at 16:03
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You can also just filter the output of find:

find .|awk -F/ 'length($NF)>=11'

-F sets IFS, NF is the number of fields, and $NF is the last field.

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