rsync based mv alternative handling recursive operation and duplicates.

rmv.sh

#!/usr/bin/env bash

# This script is a wrapper around rsync and is intended to work like mv. Unlike 
# mv this script does move data recursively and prevent duplicates by appending
# a suffix. The script will create hardlinks to the actual filesystem data in 
# the destination but NOT delete the old hardlinks from source.
#
# Author: Patrick Henninger <[email protected]>
# License: GPL v3 (https://choosealicense.com/licenses/gpl-3.0)

# Ensure arguments have been provided
if [ "$#" -ne 2 ]; then
  echo "Usage: $0 <source> <destination>"
  exit 1
fi

SOURCE="$1"
DESTINATION="$2"

# Start building the rsync command
CMD=(rsync)

#################
# Functionality #
#################

# Don't cross filesystem boundaries (mv can not do this either)
CMD+=(--one-file-system)

# Hardlink to files in SOURCE when unchanged (since it is the same filesystem)
CMD+=(--link-dest="$(dirname "$(realpath "$SOURCE")")")

# Backup duplicates in the destination
CMD+=(--backup)

# Work recursively and preserve everything
CMD+=(--archive)

############
# Cosmetic #
############

# Show progress during transfer
CMD+=(--progress)

# Execute the rsync command with the provided arguments
"${CMD[@]}" "$SOURCE" "$DESTINATION" "$@"