Retry the command until its done (zsh compatible)

untilok.sh

# Retry the command until its done.
# install: put it in .zshrc or .bashrc
# usage: 
#   untilok rsync ...
#   RETRY_DELAY=2 untilok rsync ...


untilok() {
  retrydelay=${RETRY_DELAY:-10}   # seconds; override by exporting RETRY_DELAY
  while true; do
    "$@"
    cmdstatus=$?
    if [[ $cmdstatus -eq 0 ]]; then
      echo "✅ Command succeeded."
      break
    else
      echo "⚠️ Command failed with exit code $cmdstatus. Retrying in $retrydelay seconds..."
      sleep "$retrydelay"
    fi
  done
}