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jaspermayone.com
1#!/bin/bash
2
3# File watcher and renamer
4# This script watches a folder and automatically renames new files to an 8-digit UUID format
5
6# Check if folder path is provided
7if [ $# -ne 1 ]; then
8 echo "Usage: $0 <folder_path>"
9 exit 1
10fi
11
12WATCH_DIR="$1"
13
14# Check if the directory exists
15if [ ! -d "$WATCH_DIR" ]; then
16 echo "Error: Directory '$WATCH_DIR' does not exist."
17 exit 1
18fi
19
20# Function to generate an 8-digit UUID
21generate_uuid() {
22 # Generate a random 8-digit hexadecimal string
23 uuid=$(openssl rand -hex 4)
24 echo "${uuid:0:8}"
25}
26
27# Function to check if filename already matches our pattern (8 hexadecimal digits + extension)
28is_compliant() {
29 local filename=$(basename "$1")
30 local name_without_ext="${filename%.*}"
31
32 # Check if the name (without extension) is exactly 8 characters and only contains hexadecimal digits
33 if [[ $name_without_ext =~ ^[0-9a-f]{8}$ ]]; then
34 return 0 # Compliant
35 else
36 return 1 # Not compliant
37 fi
38}
39
40# Function to rename a file with an 8-digit UUID
41rename_file() {
42 local filepath="$1"
43 local dir=$(dirname "$filepath")
44 local filename=$(basename "$filepath")
45 local extension="${filename##*.}"
46
47 # If file has no extension, don't add a dot
48 if [ "$extension" = "$filename" ]; then
49 extension=""
50 else
51 extension=".$extension"
52 fi
53
54 # Generate a new UUID
55 local new_uuid=$(generate_uuid)
56 local new_name="${new_uuid}${extension}"
57 local new_path="${dir}/${new_name}"
58
59 # Check if new filename already exists, if so, generate a new one
60 while [ -e "$new_path" ]; do
61 new_uuid=$(generate_uuid)
62 new_name="${new_uuid}${extension}"
63 new_path="${dir}/${new_name}"
64 done
65
66 # Rename the file
67 mv "$filepath" "$new_path"
68 echo "Renamed: $filename -> $new_name"
69}
70
71# Process existing files first
72echo "Checking existing files in $WATCH_DIR..."
73find "$WATCH_DIR" -type f -not -path "*/\.*" | while read file; do
74 if ! is_compliant "$file"; then
75 rename_file "$file"
76 fi
77done
78
79# Start monitoring the directory for changes
80echo "Watching $WATCH_DIR for new files..."
81fswatch -0 "$WATCH_DIR" | while read -d "" event; do
82 # Skip hidden files and directories
83 if [[ $(basename "$event") == .* ]]; then
84 continue
85 fi
86
87 # Only process files, not directories
88 if [ -f "$event" ]; then
89 # If the file is not compliant, rename it
90 if ! is_compliant "$event"; then
91 rename_file "$event"
92 fi
93 fi
94done