Package: inotify-tools

"inotify-tools" package binaries on CentOS:

/usr/bin/inotifywait /usr/bin/inotifywatch

You may install this package on CentOS with yum install inotify-tools

"inotify-tools" package binaries on Debian:

/usr/bin/inotifywait /usr/bin/inotifywatch

You may install this package on Debian with apt-get install inotify-tools