DeltaDir

Compare directories using various methods and optionally synchronize them.

Examples

Create test environment

# prepare two identical directories
mkdir -p /tmp/src/subdir
echo x > /tmp/src/test.txt
echo x > /tmp/src/subdir/test.txt
cp -a /tmp/src /tmp/dst

Find missing (new) files

The default mode is exists: a file is considered different if it is completely missing in the destination directory (dst/).

# create new file in src
echo new > /tmp/src/new.txt

# new file is found
deltadir /tmp/src/ /tmp/dst/
new.txt

# Let's synchronize it using -s or --sync! (no overwrite by default)
deltadir /tmp/src/ /tmp/dst/ --sync
new.txt

Find modified files

you can use -m/--method (exists, mtime, size, hash) for more accurate checking

# create new file in src
echo new content > /tmp/src/new.txt

# find nothing
deltadir /tmp/src/ /tmp/dst/

# use hash (slowest, but most reliable) and detect it
deltadir /tmp/src/ /tmp/dst/ -m hash
new.txt

# sync with overwrite
deltadir /tmp/src/ /tmp/dst/ -m hash -s --overwrite
new.txt

Always recursive

deltadir always work recursively.

echo new > /tmp/src/subdir/newfile.txt

deltadir /tmp/src/ /tmp/dst/ 
subdir/newfile.txt

See result as table

Add -t/--table to see results as table:

deltadir /tmp/src/ /tmp/dst/  -t
File                                     | Reason          | Src                  | Dst                  | Action              
-----------------------------------------------------------------------------------------------------------------------------
subdir/newfile.txt                       | missing         | -                    | -                    | nothing(reported)