Linux批量清理文件名：解决USB复制时特殊字符导致文件无法复制问题

I’ve run into this exact headache before—those tricky filenames with weird symbols, non-ASCII characters, or control codes always trip up the basic cp command. Here are a few robust, batch-friendly solutions to fix this without tedious manual renaming:

Solution 1: Use rsync (The Simplest Fix) #

rsync is way more resilient to special characters than plain cp, and it automatically preserves permissions, timestamps, and directory structure. Just run this command:

rsync -av /path/to/source/ /path/to/destination/

• -a: Enables archive mode (keeps all file attributes intact)
• -v: Gives verbose output so you can track what’s being copied
  This should handle most problematic filenames out of the box without needing to rename anything first.

Solution 2: Batch Rename Problematic Files First #

If rsync still hits snags (like super obscure control characters), you can batch-clean filenames to strip out invalid characters.

Option A: Use the rename Command #

Most Linux distros come with the Perl-based rename tool. Run this dry-run command first to preview changes:

find /path/to/source -type f -exec rename -n 's/[^a-zA-Z0-9\.\-_]/_/g' {} \;

• Remove the -n flag once you’re happy with the proposed changes (the -n does a test run without modifying files).
• The regex [^a-zA-Z0-9\.\-_] targets any character that’s not a letter, number, dot, hyphen, or underscore, replacing it with an underscore.

Option B: Use tr if rename Isn’t Available #

If you don’t have rename installed, use a shell loop with tr to clean filenames:

find /path/to/source -type f | while read -r file; do
    # Keep only safe characters, delete others automatically
    new_name=$(echo "$file" | tr -cd 'a-zA-Z0-9\.\-_/')
    if [ "$file" != "$new_name" ]; then
        mv "$file" "$new_name"
        echo "Renamed: $file → $new_name"
    fi
done

• -cd tells tr to delete any character not in the allowed set.
• The / is included to preserve the directory structure in the file path.

Solution 3: Use tar to Archive and Extract #

Tar excels at handling complex filenames because it stores metadata properly. You can either create an archive first or pipe directly between source and destination:

Create an Archive (Ideal for Large Drives) #

# Create archive from source
cd /path/to/source
tar -cf ../usb_backup.tar .

# Extract to destination
cd /path/to/destination
tar -xf ../usb_backup.tar

Direct Pipe (No Intermediate File) #

tar -cf - /path/to/source | tar -xf - -C /path/to/destination

This sends the archive directly to stdout and pipes it to the destination’s extract command, saving disk space.

Pro Tips #

• Always test these commands on a small subset of files first (e.g., copy a few problematic files to a test folder and run the rename/copy command there).
• If your source USB uses a FAT filesystem, some characters (like :, *, ?) are invalid on FAT but might exist on other filesystems—renaming is your best bet here.

内容的提问来源于stack exchange，提问作者user1980828