Rails Rails6由于gemlisten报错listenerror:unabletomonitordirectoriesforchanges

参考:  https://stackoverflow.com/questions/42225677/listen-error-unable-to-monitor-directories-for-changes

echo fs.inotify.max_user_watches=524288 | sudo tee -a /etc/sysctl.conf && sudo sysctl -p

就可以了.