upload my assets to the server

happycasts_sync.sh

#!/usr/bin/env bash

sync_dryrun()
{
    echo
    echo -e "\033[1m ...dryrun...\033[0m"
    rsync -av --delete ~/happycasts/episodes/ peter@linode:~/media/assets/episodes/ --dry-run
    echo -e "\033[1m ...dryrun...\033[0m"
    echo
}
sync_dryrun

sync_server()
{
    echo
    echo -e "\033[1m ...syncing...\033[0m"
    rsync -av  --progress --delete ~/happycasts/episodes/ peter@linode:~/media/assets/episodes/
    echo -e "\033[1m ...done...\033[0m"
    echo
}

echo -n "Want to sync? (Y/n): "
read AAA
if [ "${AAA:-y}" = "y" ];then
    sync_server
else
    echo Nothing done, bye.
fi

@happypeter,Could you tell me the meaning of ${AAA:-y}? "$AAA" = "y" also does work when I test.

${AAA:-y} 这样 AAA 会有一个默认值 y 。 好处是如果我直接敲回车，那么 sync_server 是会执行的。