sync.sh

#!/usr/bin/env bash

flag="to"

while getopts ":l:r:u:h:f:" opt; do
  case $opt in
    l) local="$OPTARG"
    ;;
    r) remote="$OPTARG"
    ;;
    u) user="$OPTARG"
    ;;
    h) host="$OPTARG"
    ;;
    f) flag="$OPTARG"
    ;;
    \?) echo "Invalid option -$OPTARG"
    ;;
  esac
done

if [ "$flag" == "to" ]; then
    rsync -avzhP -e 'ssh -p 22' "$local" "$user"@"$host":"$remote"
else
    rsync -avzhP -e 'ssh -p 22' "$user"@"$host":"$remote" "$local"
fi

# ./sync.sh -u lighthouse -h fun.hourui.me -l /Users/hourui/Downloads -r /home/lighthouse/fun/index.html -f from
# ./sync.sh -u lighthouse -h fun.hourui.me -l /Users/hourui/tmp/Conan.mp4 -r /home/lighthouse/fun