基于正则匹配重命名文件：移除文件名日期前缀求助

Great call on that regex—it’s exactly what we need to target those YYYY-MM-DD - prefixes. Let’s turn that into a robust shell script you can drop straight into Hazel to handle single files, no fuss.

1. The Shell Script #

This script takes a single file path as input, checks for the date prefix, and renames the file to remove it. It handles spaces and special characters in filenames safely:

#!/bin/bash

# Grab the file path passed in (Hazel will send this as an argument)
TARGET_FILE="$1"

# Make sure the file exists before doing anything
if [ ! -f "$TARGET_FILE" ]; then
    echo "Error: File $TARGET_FILE doesn't exist."
    exit 1
fi

# Split out the filename (without path) and its directory
FILE_NAME=$(basename "$TARGET_FILE")
FILE_DIR=$(dirname "$TARGET_FILE")

# Use sed with your regex to strip the date prefix
NEW_FILE_NAME=$(echo "$FILE_NAME" | sed -E 's/^([12][0-9]{3}-(0[1-9]|1[0-2])-(0[1-9]|[12][0-9]|3[01])) - //')

# Only rename if the prefix was actually found (avoid unnecessary changes)
if [ "$NEW_FILE_NAME" != "$FILE_NAME" ]; then
    mv "$TARGET_FILE" "$FILE_DIR/$NEW_FILE_NAME"
    echo "Renamed: $FILE_NAME → $NEW_FILE_NAME"
else
    echo "No date prefix detected in $FILE_NAME—skipping."
fi

2. Setting It Up in Hazel #

Getting this into Hazel is straightforward:

• Open Hazel, select the folder you want to process, and create a new rule.
• Add a condition to target your files—something like Kind is File (or narrow it down to specific extensions: Extension is JPG, DNG, PSD if you only want those types).
• Add an action: Choose Run Shell Script, then set Pass input: to as arguments.
• Paste the full script into the text box (keep the #!/bin/bash line at the top).

3. Key Notes for Safety & Reliability #

• Special character handling: All variables are wrapped in double quotes, so filenames with spaces, parentheses, or other weird characters won’t break the script.
• MacOS compatibility: We use sed -E for extended regex, which works with macOS’s default sed (Hazel runs in the system shell environment, so no extra installs needed).
• No false positives: The script only renames files where it actually finds the date prefix—no accidental changes to files that don’t match.

4. Test First! #

Before letting Hazel loose on all your files, test the script manually to make sure it works:

# Replace with your test file's full path
./your_script_name.sh "/Users/you/Photos/2014-10-29 - _DSF5234.DNG"

Check that the file gets renamed to _DSF5234.DNG as expected.

内容的提问来源于stack exchange，提问作者Sebastian