81 lines
2.1 KiB
Bash
Executable File
81 lines
2.1 KiB
Bash
Executable File
#!/bin/bash
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#
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# sync-newer-images — For each top-level image or video in SRC, copy it to
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# DEST if it doesn't already exist anywhere under DEST.
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# Works on Linux and macOS (bash 3.2+ compatible).
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usage() {
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cat <<'EOF'
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Usage: sync-newer-images [options] <destination> <source>
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For each top-level image or video in source, copy it into destination if no
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file with the same name exists anywhere under destination.
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Options:
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-u, --update If a matching file already exists under destination,
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copy over it only if the content differs (uses cmp).
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-h, --help Show this help message and exit
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EOF
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exit 0
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}
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update_mode=0
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while [ $# -gt 0 ]; do
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case "$1" in
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-h|--help) usage ;;
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-u|--update) update_mode=1; shift ;;
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*) break ;;
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esac
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done
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if [ $# -lt 2 ]; then
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echo "Error: destination and source are required" >&2
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echo "Usage: sync-newer-images [options] <destination> <source>" >&2
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exit 1
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fi
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DEST="$1"
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SRC="$2"
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if [ ! -d "$DEST" ]; then
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echo "Error: destination '$DEST' is not a directory" >&2
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exit 1
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fi
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if [ ! -d "$SRC" ]; then
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echo "Error: source '$SRC' is not a directory" >&2
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exit 1
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fi
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# Build deduplicated, newline-separated list of all basenames under DEST.
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basenames=$(find "$DEST" -type f 2>/dev/null | sed 's|.*/||' | sort -u)
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copied=0
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for srcfile in "$SRC"/*; do
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[ -f "$srcfile" ] || continue
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ext="${srcfile##*.}"
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case "$(echo "$ext" | tr '[:upper:]' '[:lower:]')" in
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jpg|jpeg|png|gif|heic|webp|bmp|tiff|tif) ;;
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mov|mp4|m4v|avi|mkv|3gp) ;;
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*) continue ;;
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esac
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filename="${srcfile##*/}"
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if ! printf '%s\n' "$basenames" | grep -qxF "$filename"; then
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cp -v "$srcfile" "$DEST/"
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copied=$((copied + 1))
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elif [ "$update_mode" -eq 1 ]; then
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destfile=$(find "$DEST" -type f -name "$filename" 2>/dev/null | head -1)
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if [ -n "$destfile" ] && ! cmp -s "$srcfile" "$destfile"; then
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cp -v "$srcfile" "$destfile"
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copied=$((copied + 1))
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fi
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fi
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done
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echo "Copied ${copied} image(s)/video(s) from ${SRC} into ${DEST}"
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