find if files in one directory recursively exists in another directory recursively in linux bash and print exists or not exists

Question

find if files in one directory recursively exists in another directory recursively in linux bash and print exists or not exists

lets say you have

• pth1/dirA/file1 pth1/dirA/DirB/file2 and
• pth2/dirA/file1 pth2/dirA/DirB/file3

I want a report that

file1 exists 
files2 dont exist in pth2
files3 dont exist in pth1

i have found that code that works for current level for both directories, but i cant make it work recursively taken from here

pth1="/mntA/newpics";
pth2="/mntB/oldpics";
for file in "${pth1}"/*; do
    if [[ -f "${pth2}/${file##*/}" ]]; then
       echo "$file exists";
    fi
done

How I can do it to work recursively on both paths?

Answer 1

I did it with another method. I find all files in one directory, strip their path, then I can save the results in two different files and compare them with meld or other program, or I can compare finds directly with meld.

Note that I sort files and choose only unique files and not duplicates in results. Also, I am interested only in files that their filename ends in "jpg" extension.

pth1="/mnt/oldfiles";
pth2="/mnt/newfiles";

and then

(find "${pth1}"/ -exec basename {} \; | grep "jpg$" | sort | uniq )  > a.txt;
(find "${pth2}"/ -exec basename {} \; | grep "jpg$" | sort | uniq )  > b.txt;
meld a.txt b.txt

OR diretly

meld <(find "${pth1}"/ -exec basename {} \; | grep "jpg$" | sort | uniq )  <(find "${pth2}"/ -exec basename {} \; | grep "jpg$" | sort | uniq )

UPDATE: if one directory is much larger than other, the direct command dont work (MILD opens without both commands finish).

Answer 2

It's not terribly clear what you want, but I think this will do it. This command compares all files under /path/1 to those under /path/2, checking for existence and equality.

diff --brief --recursive /path/1 /path/2

Worked example

# Create some files
mkdir -p 1/{x,y} 2/{x,z}
touch 1/{x,y}/file1
date | tee 2/x/file1 >2/z/date

# Show what we have
tree 1 2
1
├── x
│   └── file1
└── y
    └── file1
2
├── x
│   └── file1
└── z
    └── date
4 directories, 4 files

# Compare the two directory trees
diff --brief --recursive 1 2
Files 1/x/file1 and 2/x/file1 differ
Only in 1: y
Only in 2: z