2

Is there a way to ask mdfind to search for filenames with an exact filename ?

At some point in a pipe I have this:

(filenames are produced here) | while read f; do mdfind -name "$f" | grep -E "/$f";

I have two problems:

  • if the filename contains a +:

    grep: repetition-operator operand invalid

  • if the filename contains a parenthesis, the result is empty.

How can I fix this ?

1

I think that you don't need any regular expressions here. Just try to search for a fixed string with grep. You can enable fixed string matching with the -F switch.

Given that your command line looks like

(filenames are produced here) | \
while read f ; \
    do mdfind -name "$f" | grep -F "/$f" ; \
done
2

Use the power of the man page. ;)

The man page of mdfind says:

 -literal    Force the provided query string to be taken as a literal query string, without interpretation.

Without that option mdfind interprets characters like "*", "+" and "()" as regular expression.

The metadata attribute for file name is kMDItemFSName. So, to find a file with a specific name:

mdfind -literal 'kMDItemFSName = "somefile.txt"'

Bonus tip: You can also use mdls /path/to/somefile.txt to inspect the file's metadata

  • But is the filename a metadata attribute ? – alecail Jan 22 '13 at 11:59
  • This works:mdfind -literal 'kMDItemFSName == .. but it is so slow that it is not usable. mdfind -name returns almost immediately, -literal takes easily 30 seconds on the request I tried. – alecail Jan 22 '13 at 12:11
  • @Antoine, that is weird. It should be faster not to have to consider alternatives. – vonbrand Jan 22 '13 at 14:48
  • @vonbrand I'll have a look later - I'm currently moving a few TB of files - it may be related – alecail Jan 22 '13 at 14:52
  • @vonbrand I just tested on a non busy system and it's incredibly slow compared to mdfind -name. – alecail Jan 25 '13 at 11:26

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