inotifywait 3.14
Wait for a particular event on a file or set of files.
Usage: inotifywait [ options ] file1 [ file2 ] [ file3 ] [ ... ]
Options:
-h|--help       Show this help text.
@<file>         Exclude the specified file from being watched.
--exclude <pattern>
Exclude all events on files matching the
extended regular expression <pattern>.
--excludei <pattern>
Like --exclude but case insensitive.
-m|--monitor    Keep listening for events forever.  Without
this option, inotifywait will exit after one
event is received.
-d|--daemon     Same as --monitor, except run in the background
logging events to a file specified by --outfile.
Implies --syslog.
-r|--recursive  Watch directories recursively.
--fromfile <file>
Read files to watch from <file> or `-' for stdin.
-o|--outfile <file>
Print events to <file> rather than stdout.
-s|--syslog     Send errors to syslog rather than stderr.
-q|--quiet      Print less (only print events).
-qq             Print nothing (not even events).
--format <fmt>  Print using a specified printf-like format
string; read the man page for more details.
--timefmt <fmt> strftime-compatible format string for use with
%T in --format string.
-c|--csv        Print events in CSV format.
-t|--timeout <seconds>
When listening for a single event, time out after
waiting for an event for <seconds> seconds.
If <seconds> is 0, inotifywait will never time out.
-e|--event <event1> [ -e|--event <event2> ... ]
Listen for specific event(s).  If omitted, all events are
listened for.

Exit status:
0  -  An event you asked to watch for was received.
1  -  An event you did not ask to watch for was received
(usually delete_self or unmount), or some error occurred.
2  -  The --timeout option was given and no events occurred
in the specified interval of time.

Events:
access          file or directory contents were read
modify          file or directory contents were written
attrib          file or directory attributes changed
close_write     file or directory closed, after being opened in
writeable mode
close_nowrite   file or directory closed, after being opened in
read-only mode
close           file or directory closed, regardless of read/write mode
open            file or directory opened
moved_to        file or directory moved to watched directory
moved_from      file or directory moved from watched directory
move            file or directory moved to or from watched directory
create          file or directory created within watched directory
delete          file or directory deleted within watched directory
delete_self     file or directory was deleted
unmount         file system containing file or directory unmounted

七、人工测试监听事件：inotifywait

     命令：   /usr/local/inotify/bin/inotifywait  -mrq --timefmt '%Y/%m/%d %H:%M' --format '%T %w%f' -e create,delete,close_write  /backup

这里要注意：close_write 监控的是写入文件的内容，只要写入就会被监听到，但是如果创造文件，也是一种写入，所以有create存在，就会有两个事件，如下：

八、简单脚本：

[root@djw1 scripts]# vim inotify.sh  
#!/bin/bash
path="/usr/local/inotify/bin/inotifywait"
$path -mrq --format '%w%f' -e create,delete,close_write  /backup |\
while read line
do
  rsync -az $line  rsync_backup@192.168.0.103::oldboy --password-file=/etc/rsync.password
done

测试成功！！！

九、inotity的缺点：

1）并发不能大于200个文件（10-100k的文件）