脚本管理硬链接，删除or补全orkeep

如果创建硬链接后，删掉了一端，那么如何删除另一端，或者如何补全另一端呢？

写了个脚本，实测ok。

1. #!/bin/bash
   
2. set -e
   
3. 
   
4. DEFAULT_LIST="orphan_list.txt"
   
5. 
   
6. prompt_dir () {
   
7.   local label="$1"
   
8.   local def="$2"
   
9.   local v=""
   
10.   while true; do
    
11.     read -p "$label [$def]: " v
    
12.     v="${v:-$def}"
    
13.     if [ -d "$v" ]; then
    
14.       echo "$v"
    
15.       return 0
    
16.     else
    
17.       echo "Not a directory: $v"
    
18.     fi
    
19.   done
    
20. }
    
21. 
    
22. prompt_file () {
    
23.   local label="$1"
    
24.   local def="$2"
    
25.   local v=""
    
26.   while true; do
    
27.     read -p "$label [$def]: " v
    
28.     v="${v:-$def}"
    
29.     if [ -f "$v" ]; then
    
30.       echo "$v"
    
31.       return 0
    
32.     else
    
33.       echo "Not a file: $v"
    
34.     fi
    
35.   done
    
36. }
    
37. 
    
38. scan_orphans () {
    
39.   local ABC="$1"
    
40.   local XYZ="$2"
    
41.   local OUT="$3"
    
42. 
    
43.   echo "Scanning XYZ for candidates (files with links=1) and filtering those whose inode is absent in ABC..."
    
44.   : > "$OUT"
    
45. 
    
46.   # 注意：这版对每个候选都会在 ABC 内 find 一次 inode，文件多会慢，但最直观易用。
    
47.   find "$XYZ" -type f -links 1 | while IFS= read -r f; do
    
48.     inode=$(stat -c %i "$f") || continue
    
49.     if ! find "$ABC" -inum "$inode" -print -quit 2>/dev/null | grep -q .; then
    
50.       echo "$f" >> "$OUT"
    
51.     fi
    
52.   done
    
53. 
    
54.   echo "Scan done. List saved to: $OUT"
    
55.   echo -n "Total lines: "
    
56.   wc -l "$OUT" | awk '{print $1}'
    
57. }
    
58. 
    
59. view_list () {
    
60.   local LIST="$1"
    
61.   echo "---- First 50 lines of $LIST ----"
    
62.   nl -ba "$LIST" | head -n 50
    
63.   echo "--------------------------------"
    
64. }
    
65. 
    
66. process_list () {
    
67.   local ABC="$1"
    
68.   local LIST="$2"
    
69. 
    
70.   echo
    
71.   echo "Choose process mode:"
    
72.   echo "1) interactive (逐条处理：delete/keep/link/quit)"
    
73.   echo "2) delete ALL"
    
74.   echo "3) keep ALL"
    
75.   echo "4) create hardlink for ALL (to a directory you specify)"
    
76.   echo "5) back"
    
77. 
    
78.   read -p "Select: " mode
    
79.   [ -z "$mode" ] && return 0
    
80.   [ "$mode" = "5" ] && return 0
    
81. 
    
82.   local bulk_dir=""
    
83.   if [ "$mode" = "4" ]; then
    
84.     echo
    
85.     echo "Batch link needs a destination directory (will create links as DESTDIR/<basename>)."
    
86.     bulk_dir=$(prompt_dir "Enter destination directory for new links" "$ABC/recovered")
    
87.   fi
    
88. 
    
89.   while IFS= read -r file; do
    
90.     [ -z "$file" ] && continue
    
91. 
    
92.     if [ ! -e "$file" ]; then
    
93.       echo "SKIP (missing now): $file"
    
94.       continue
    
95.     fi
    
96. 
    
97.     action="$mode"
    
98.     if [ "$mode" = "1" ]; then
    
99.       echo "--------------------------------"
    
100.       echo "File: $file"
     
101.       echo "1) delete"
     
102.       echo "2) keep"
     
103.       echo "3) create hardlink (you type full dest path)"
     
104.       echo "4) quit"
     
105. 
     
106.       read -p "Select: " action
     
107.     fi
     
108. 
     
109.     if [ "$action" = "1" ]; then
     
110.       rm -v -- "$file"
     
111. 
     
112.     elif [ "$action" = "2" ] || [ "$action" = "3" ]; then
     
113.       if [ "$action" = "2" ]; then
     
114.         echo "KEEP: $file"
     
115.       else
     
116.         read -p "Enter full destination path for new hardlink: " dest
     
117.         if [ -z "$dest" ]; then
     
118.           echo "No dest, keep."
     
119.           continue
     
120.         fi
     
121.         mkdir -p "$(dirname "$dest")"
     
122.         ln -v -- "$file" "$dest"
     
123.       fi
     
124. 
     
125.     elif [ "$action" = "4" ]; then
     
126.       # interactive quit
     
127.       return 0
     
128. 
     
129.     elif [ "$action" = "4" ] && [ "$mode" != "1" ]; then
     
130.       # unreachable
     
131.       :
     
132. 
     
133.     elif [ "$action" = "4" ] && [ "$mode" = "4" ]; then
     
134.       # unreachable
     
135.       :
     
136. 
     
137.     elif [ "$action" = "4" ]; then
     
138.       # unreachable
     
139.       :
     
140. 
     
141.     elif [ "$action" = "4" ]; then
     
142.       # noop
     
143.       :
     
144. 
     
145.     elif [ "$action" = "4" ]; then
     
146.       :
     
147. 
     
148.     elif [ "$action" = "4" ]; then
     
149.       :
     
150. 
     
151.     elif [ "$action" = "4" ]; then
     
152.       :
     
153. 
     
154.     else
     
155.       # batch modes 2/3/4
     
156.       if [ "$mode" = "2" ]; then
     
157.         rm -v -- "$file"
     
158.       elif [ "$mode" = "3" ]; then
     
159.         echo "KEEP: $file"
     
160.       elif [ "$mode" = "4" ]; then
     
161.         bn="$(basename "$file")"
     
162.         dest="$bulk_dir/$bn"
     
163.         if [ -e "$dest" ]; then
     
164.           echo "SKIP (dest exists): $dest"
     
165.         else
     
166.           mkdir -p "$bulk_dir"
     
167.           ln -v -- "$file" "$dest"
     
168.         fi
     
169.       fi
     
170.     fi
     
171. 
     
172.   done < "$LIST"
     
173. 
     
174.   echo "Process done."
     
175. }
     
176. 
     
177. main_menu () {
     
178.   echo
     
179.   echo "========== Hardlink Orphan Tool =========="
     
180.   echo "1) Scan and create orphan list"
     
181.   echo "2) Process an existing list file"
     
182.   echo "3) View a list file"
     
183.   echo "4) Quit"
     
184.   read -p "Select: " c
     
185.   echo "$c"
     
186. }
     
187. 
     
188. # ---- main ----
     
189. echo "This tool identifies files in XYZ with links=1 whose inode is absent in ABC."
     
190. echo "Then you can delete/keep/recreate another hardlink."
     
191. 
     
192. ABC=$(prompt_dir "Enter ABC (source dir)" "/volume/abc")
     
193. XYZ=$(prompt_dir "Enter XYZ (target dir)" "/volume/xyz")
     
194. 
     
195. LIST_PATH="$DEFAULT_LIST"
     
196. 
     
197. while true; do
     
198.   c=$(main_menu)
     
199.   case "$c" in
     
200.     1)
     
201.       read -p "Output list file path [$LIST_PATH]: " out
     
202.       LIST_PATH="${out:-$LIST_PATH}"
     
203.       scan_orphans "$ABC" "$XYZ" "$LIST_PATH"
     
204.       echo
     
205.       echo "Next action:"
     
206.       echo "1) View list"
     
207.       echo "2) Process list now"
     
208.       echo "3) Back to main menu"
     
209.       read -p "Select: " nxt
     
210.       if [ "$nxt" = "1" ]; then
     
211.         view_list "$LIST_PATH"
     
212.       elif [ "$nxt" = "2" ]; then
     
213.         process_list "$ABC" "$LIST_PATH"
     
214.       fi
     
215.       ;;
     
216.     2)
     
217.       LIST_PATH=$(prompt_file "Enter list file to process" "$LIST_PATH")
     
218.       process_list "$ABC" "$LIST_PATH"
     
219.       ;;
     
220.     3)
     
221.       LIST_PATH=$(prompt_file "Enter list file to view" "$LIST_PATH")
     
222.       view_list "$LIST_PATH"
     
223.       ;;
     
224.     4)
     
225.       exit 0
     
226.       ;;
     
227.     *)
     
228.       echo "Unknown option."
     
229.       ;;
     
230.   esac
     
231. done

复制代码

脚本保存在本地，然后执行。

1. chmod +x hl_orphan_tool.sh
   
2. sudo ./hl_orphan_tool.sh

复制代码

进入交互模式：

==== Hardlink Orphan Tool ====

Enter source directory (ABC)          #输入硬链接源目录（其实实质上没有源目录，但是创建硬链接时一般是一些mp或者mdcx等这种视频管理工具，会有一个源整理到目录）
/volume/Video/Downloads   

Enter target directory (XYZ)          #整理的目标目录
/volume/Video/XYZ

Choose action:                       选择任务
1) Scan orphan files            # 扫描目标目录中失去硬链接的文件，并生成orphan_list.txt，后续执行处理操作
2) Process existing list          # 直接使用已生成的orphan_list.txt，后续执行处理操作
3) Exit

这里如果已经扫描过生成了orphan_list.txt，并自己查看无误后，选择2 执行

Enter list file path (default orphan_list.txt)     

Choose process mode:
1) interactive
2) delete all
3) keep all
4) create hardlink for all
2