Automatic rsync retry with incremental (delay) backoff

rsyncr

#!/bin/bash
#
# Rsyncr (Rsync Retry) 2016 David Mcanulty
# Runs rsync, retrying on errors up to a maximum number of tries with incremental backoff (delay)
# Based on idea from https://gist.github.com/iangreenleaf/279849 by iangreenleaf 2011

# Set your max rsync retries here
max_retries=50

# Trap interrupts (ctrl-c) and exit instead of continuing the loop
trap "echo Exited!; exit;" SIGINT SIGTERM

if [[ $# -eq 0 ]]; then
    echo "*** No arguments provided to $0 showing rsync help instead ***"
    sleep 2; rsync --help
    exit 1
fi

read -rs -p "Optional remote rsync password(enter for none): " RSYNC_PASSWORD

i=0
while [[ ${i} -le ${max_retries} ]] ; do
   if rsync "$@" ;then
      echo "Rsync exited successfully after ${i} retries"
      break
   else
      i=$(($i+1))
      sleep ${i}
   fi
done
exit $?

I thought about adding password handling for ssh connections, but you should just use ssh keys.