inotifywatch

inotifywatch(1)             General Commands Manual            inotifywatch(1)



NAME
       inotifywatch - gather filesystem access statistics using inotify


SYNOPSIS
       inotifywatch [-hvzrqf] [-e <event> ] [-t <seconds> ] [-a <event> ] [-d
       <event> ] <file> [ ... ]


DESCRIPTION
       inotifywatch listens for filesystem events using Linux's inotify(7)
       interface, then outputs a summary count of the events received on each
       file or directory.


OUTPUT
       inotifywatch will output a table on standard out with one column for
       each type of event and one row for each watched file or directory.  The
       table will show the amount of times each event occurred for each
       watched file or directory.  Output can be sorted by a particular event
       using the -a or -d options.

       Some diagnostic information will be output on standard error.


OPTIONS
       -h, --help
              Output some helpful usage information.


       -v, --verbose
              Output some extra information on standard error during
              execution.

       @<file>
              When watching a directory tree recursively, exclude the
              specified file from being watched.  The file must be specified
              with a relative or absolute path according to whether a relative
              or absolute path is given for watched directories.  If a
              specific path is explicitly both included and excluded, it will
              always be watched.

              Note: If you need to watch a directory or file whose name starts
              with @, give the absolute path.

       --fromfile <file>
              Read filenames to watch or exclude from a file, one filename per
              line.  If filenames begin with @ they are excluded as described
              above.  If <file> is `-', filenames are read from standard
              input.  Use this option if you need to watch too many files to
              pass in as command line arguments.

       -z, --zero
              Output table rows and columns even if all elements are zero.  By
              default, rows and columns are only output if they contain non-
              zero elements.  Using this option when watching for every event
              on a lot of files can result in a lot of output!


       --exclude <pattern>
              Do not process any events whose filename matches the specified
              POSIX extended regular expression, case sensitive.


       --excludei <pattern>
              Do not process any events whose filename matches the specified
              POSIX extended regular expression, case insensitive.


       -r, --recursive
              Watch all subdirectories of any directories passed as arguments.
              Watches will be set up recursively to an unlimited depth.
              Symbolic links are not traversed.  If new directories are
              created within watched directories they will automatically be
              watched.

              Warning: If you use this option while watching the root
              directory of a large tree, it may take quite a while until all
              inotify watches are established, and events will not be received
              in this time.  Also, since one inotify watch will be established
              per subdirectory, it is possible that the maximum amount of
              inotify watches per user will be reached.  The default maximum
              is 8192; it can be increased by writing to
              /proc/sys/fs/inotify/max_user_watches.


       -t <seconds>, --timeout <seconds>
              Listen only for the specified amount of seconds.  If not
              specified, inotifywatch will gather statistics until receiving
              an interrupt signal by (for example) pressing CONTROL-C at the
              console.


       -e <event>, --event <event>
              Listen for specific event(s) only.  The events which can be
              listened for are listed in the EVENTS section.  This option can
              be specified more than once.  If omitted, all events are
              listened for.


       -a <event>, --ascending <event>
              Sort output ascending by event counts for the specified event.
              Sortable events include `total' and all the events listed in the
              EVENTS section except `move' and `close' (you must use
              `moved_to', `moved_from', `close_write' or `close_nowrite'
              instead).  The default is to sort descending by `total'.


       -d <event>, --descending <event>
              Sort output descending by event counts for the specified event.
              Sortable events include `total' and all the events listed in the
              EVENTS section except `move' and `close' (you must use
              `moved_to', `moved_from', `close_write' or `close_nowrite'
              instead).  The default is to sort descending by `total'.


EXIT STATUS
       0      The program executed successfully.

       1      An error occurred in execution of the program.


EVENTS
       The following events are valid for use with the -e option:


       access A watched file or a file within a watched directory was read
              from.


       modify A watched file or a file within a watched directory was written
              to.


       attrib The metadata of a watched file or a file within a watched
              directory was modified.  This includes timestamps, file
              permissions, extended attributes etc.


       close_write
              A watched file or a file within a watched directory was closed,
              after being opened in writeable mode.  This does not necessarily
              imply the file was written to.


       close_nowrite
              A watched file or a file within a watched directory was closed,
              after being opened in read-only mode.


       close  A watched file or a file within a watched directory was closed,
              regardless of how it was opened.  Note that this is actually
              implemented simply by listening for both close_write and
              close_nowrite, hence all close events received will be output as
              one of these, not CLOSE.


       open   A watched file or a file within a watched directory was opened.


       moved_to
              A file or directory was moved into a watched directory.  This
              event occurs even if the file is simply moved from and to the
              same directory.


       moved_from
              A file or directory was moved from a watched directory.  This
              event occurs even if the file is simply moved from and to the
              same directory.


       move   A file or directory was moved from or to a watched directory.
              Note that this is actually implemented simply by listening for
              both moved_to and moved_from, hence all close events received
              will be output as one or both of these, not MOVE.


       move_self
              A watched file or directory was moved. After this event, the
              file or directory is no longer being watched.


       create A file or directory was created within a watched directory.


       delete A file or directory within a watched directory was deleted.


       delete_self
              A watched file or directory was deleted.  After this event the
              file or directory is no longer being watched.  Note that this
              event can occur even if it is not explicitly being listened for.


       unmount
              The filesystem on which a watched file or directory resides was
              unmounted.  After this event the file or directory is no longer
              being watched.  Note that this event can occur even if it is not
              explicitly being listened to.



EXAMPLE
       Watching the `~/.beagle' directory for 60 seconds:

       % inotifywatch -v -e access -e modify -t 60 -r ~/.beagle
       Establishing watches...
       Setting up watch(es) on /home/rohan/.beagle
       OK, /home/rohan/.beagle is now being watched.
       Total of 302 watches.
       Finished establishing watches, now collecting statistics.
       Will listen for events for 60 seconds.
       total  access  modify  filename
       1436   1074    362     /home/rohan/.beagle/Indexes/FileSystemIndex/PrimaryIndex/
       1323   1053    270     /home/rohan/.beagle/Indexes/FileSystemIndex/SecondaryIndex/
       303    116     187     /home/rohan/.beagle/Indexes/KMailIndex/PrimaryIndex/
       261    74      187     /home/rohan/.beagle/TextCache/
       206    0       206     /home/rohan/.beagle/Log/
       42     0       42      /home/rohan/.beagle/Indexes/FileSystemIndex/Locks/
       18     6       12      /home/rohan/.beagle/Indexes/FileSystemIndex/
       12     0       12      /home/rohan/.beagle/Indexes/KMailIndex/Locks/
       3      0       3       /home/rohan/.beagle/TextCache/54/
       3      0       3       /home/rohan/.beagle/TextCache/bc/
       3      0       3       /home/rohan/.beagle/TextCache/20/
       3      0       3       /home/rohan/.beagle/TextCache/62/
       2      2       0       /home/rohan/.beagle/Indexes/KMailIndex/SecondaryIndex/


BUGS
       There are race conditions in the recursive directory watching code
       which can cause events to be missed if they occur in a directory
       immediately after that directory is created.  This is probably not
       fixable.

       It is assumed the inotify event queue will never overflow.


AUTHORS
       inotifywatch was started by Rohan McGovern, and is currently maintained
       by Eric Curtin and Radu Voicilas. https://www.openhub.net/p/inotify-
       tools/contributors/summary gives you a more complete list of
       contributors.

       inotifywatch is part of inotify-tools.  The inotify-tools website is
       located at: https://github.com/inotify-tools/inotify-tools/wiki


SEE ALSO
       inotifywait(1), inotify(7)



inotifywatch 3.20.2.1             2020-02-02                   inotifywatch(1)