unison sync tool

sync.sh

#!/bin/bash

# This script is for Mac OS X
# Your remote Linux server should have unison of the same version (check unison -version).
# this file allows you to sync a local folder to a remote server's location via ssh
# it supports two modes:
# 1. continuous watch-and-sync, if you provide one argument, which is the ssh server's Host name (defined in .ssh/config). 
#    If you need to exit, you need to press ctrl+c twice
# 2. one-time batch sync, if you provide multiple ssh hosts.

remote_dir=YOUR_REMOTE_FOLDER  # target directory path

which unison
if [[ $? -ne 0 ]]
then
  brew install unison
fi

pushd $(dirname ${BASH_SOURCE[0]})/..

if [[ $# -eq 1 ]]
then
  echo "Repeat mode"
  repeat_arg='-repeat watch'
fi

while true
do
  for host in $@
  do
    unison . ssh://${host}/${remote_dir} -force . -ui text \
      -batch ${repeat_arg} -retry 100 -links true -logfile /dev/null \
      -ignore "Name {.*,*}.(sw[pon])" -ignore "Name venv" -ignore "Name venv.nosync" \
      -ignore "Name db/*.json" -ignore "Name .idea" \
      -ignore "Name .DS_Store" -ignore "Name *.db" -ignore "Name *.pyc" -ignore "Name __pycache__"
      # customize your ignore list above
    exit_code=$?
    echo "exit_code=${exit_code}"
  done
  if [[ ! -z ${repeat_arg} ]]
  then
    echo ${exit_code}
    if [[ ${exit_code} != 3 ]]
    then
      break
    fi
    echo 'Wait 5 seconds...Or press ctrl+c again to exit'
    sleep 5
  else
    break
  fi
done
popd