Linux监听文件夹里文件的增删修改变化

2021-02-03 遇到的一点小问题

最近有个需求需要监听文件夹里文件的变化，网上找到 如何用 Shell 监控文件变化？ ，安装 pacman -Sy inotify-tools ，参照 文档 试了下 inotifywait ，能实现挺多功能的。

java 的WatchService 类提供了一种方式可以检查

try

{

WatchService watchService = FileSystems.getDefault()

.newWatchService()

Path path = Paths.get(pathName)

// 注册监听器

path.register(watchService,

StandardWatchEventKinds.ENTRY_CREATE,

StandardWatchEventKinds.ENTRY_DELETE)

while (true)

{

// 阻塞方式，消费文件更改事件

List<WatchEvent<?>>watchEvents = watchService.take()

.pollEvents()

for (WatchEvent<?>watchEvent : watchEvents)

{

System.out.printf("[%s]文件发生了[%s]事件。%n", watchEvent

.context(), watchEvent.kind())

}

}

}

catch (Exception e)

{

}

inotify can not monitor nfs or samba

two way to do it :

1>File Alteration Monitor(known as FAM and sgi_fam, provides a subsystem developed by Silicon Graphics for Unix-likeoperating systems.)

server runs at nfs server ,while client runs at client pc

2>server runs a program using inotif monitor file changs ,then send changs to remote client by socket. it is a question of adding some socket ipc to your client progarm.

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