Rename a question mark (?) in filenames

Question

With rename it is possible to bulk change filenames. I managed to get rid of all + with this command and replace them with underscores:

rename 's/\+/_/g' * 

I could change normal letters like a to A with.

rename 's/a/A/g' *

but I could not rename the ?, not like this /\? and not like this /?.

Is there any way to adress the "?" in the filename? Most FTP programs fail to rename files with ? as well. Midnight Commander fails. The only way I found that works so far is:

mv ?myfile.txt myfile.txt

but this command is not flexible enough. I would prefer to bulk rename all ? in all files.

Answer 1

How about this:

for filename in *
do 
    if [ "$filename" == *"?"* ] 
    then
        mv "$filename" "$(echo $filename | tr '?' '-')" 
    fi
done

Or as a one liner:

for filename in *; do mv "$filename" "$(echo $filename | tr '?' '-')" ; done

However, it looks like your issue isn't that there are question marks in your filenames, but rather that your filenames contain characters that ls doesn't recognize.

Answer 2

It's ugly, but here it goes, a one liner using Python:

python -c 'import os, re; [os.rename(i, re.sub(r"\?", "-", i)) for i in os.listdir(".")]'

As for cleaning up file names, maybe this will help you:

python -c 'import os, re; [os.rename(i, unicode(i, "utf-8", "ignore")) for i in os.listdir(".")]'

Answer 3

Use this code

for file in ./*;
do
  OUT=`echo $file | sed 's/\r//g'`;
  mv $file $OUT;
done

Apparently \r matches ? in sed.

Answer 4

The ? char can be tricky to match. And i did not get lucky with rename. To avoid mismatches in encoding I found it easier to deal with the output of dir.

In my case the ? then turns out to be a \303\202. We still need to escape the \ with another \\

Finally iterating over all files

for i in *; do mv $i $(echo $i | tr \\303\\202 _); done

Answer 5

This may be overkill but with the bash script in the link provided in this answer you can rename a filename with any characters in it including question marks, newlines, multibyte characters, spaces, dashes and any other allowable character:

https://superuser.com/a/858671/365691