transfer.sh - Securely transfer files/directories using rsync over SSH. Supports resumable transfers and colored output.

transfer.sh

#!/bin/bash
# transfer.sh - Securely transfer files/directories using rsync over SSH.
# Supports resumable transfers and colored output.

# --- Define Colors ---
GREEN='\033[0;32m'
RED='\033[0;31m'
CYAN='\033[0;36m'
NC='\033[0m' # No Color

# --- Script Arguments ---
MODE="$1"
SOURCE="$2"
DESTINATION="$3"
PORT=${4:-22} # Default to SSH port 22

# --- Argument Validation ---
if [[ "$MODE" != "send" && "$MODE" != "get" ]] || [ "$#" -lt 3 ]; then
    echo -e "${RED}❌ Error: Invalid arguments.${NC}"
    echo -e "\nUsage: $0 [send|get] [source] [destination] [port]"
    echo "  ex: $0 send ./local-file user@host:/remote/path"
    echo "  ex: $0 get user@host:/remote/file ./local-path 2222"
    exit 1
fi

# rsync options: -a (archive), -v (verbose), -z (compress), -P (progress/partial)
RSYNC_OPTS="-avzP"

# --- Execute rsync command based on mode ---
case "$MODE" in
  "send")
    if [ ! -e "$SOURCE" ]; then
        echo -e "${RED}❌ Error: Local source '$SOURCE' not found.${NC}"
        exit 1
    fi
    echo -e "${CYAN}🚀 Sending '$SOURCE' to '$DESTINATION' (port $PORT)...${NC}"
    rsync $RSYNC_OPTS -e "ssh -p $PORT" "$SOURCE" "$DESTINATION"
    ;;

  "get")
    echo -e "${CYAN}🚀 Getting '$SOURCE' from '$DESTINATION' (port $PORT)...${NC}"
    rsync $RSYNC_OPTS -e "ssh -p $PORT" "$SOURCE" "$DESTINATION"
    ;;
esac

# --- Check the result ---
if [ $? -eq 0 ]; then
    echo -e "${GREEN}✅ Success! Transfer complete.${NC}"
else
    echo -e "${RED}❌ Failed. Please check the following:${NC}"
    echo "   - Connectivity, credentials, paths, and permissions."
    echo "   - SSH is running on port $PORT and 'rsync' is installed on the server."
fi

$ transfer --help

Usage: /usr/local/bin/transfer [send|get] [source] [destination] [port]
  ex: /usr/local/bin/transfer send ./local-file user@host:/remote/path
  ex: /usr/local/bin/transfer get user@host:/remote/file ./local-path 2222