fswatch

Multi platform file change monitor

fswatch is a file change monitor that receives notifications when the contents of the specified files or directories are modified. fswatch implements several monitors based on: * the File System Events API of Apple macOS. * kqueue, a notification interface introduced in FreeBSD 4.1 (and supported on most *BSD systems, including macOS). * the File Events Notification API of the Solaris kernel and its derivatives. * inotify, a Linux kernel subsystem that reports file system changes to applications. * ReadDirectoryChangesW, a Microsoft Windows API that reports changes to a directory. * A monitor which periodically stats the file system, saves file modification times in memory, and manually calculates file system changes (which works anywhere stat(2) can be used).