Provided by: fnotifystat_0.02.10-1_amd64 
NAME
fnotifystat - a tool to show file system activity
SYNOPSIS
fnotifystat [options] [delay [count]]
DESCRIPTION
fnotifystat is a program that dumps the file system activity in a given period of time.
Statistics are output every 'delay' seconds. One can use the 'm' (minutes), 'h' (hours),
'd' (days), 'w' (weeks) or 'y' (years) suffix to specify large delay intervals. By default
the delay is 1 second.
Statistics are output 'count' many times before exiting. If count is not specified then
fnotifystat will run until it is stopped.
Note that if no file activity has occurred during a sample delay period then no new
statistics are output. The -f option will force output if desired.
By default, fnotifystat will display the following statistics every sample 'delay'
seconds:
• Average number of opens, closes, reads and writes over the sample period
• Average number of opens over the sample period
• Average number of closes over the sample period
• Average number of reads over the sample period
• Average number of writes over the sample period
• Process ID
• Pathname
The -I option will display the device (major, minor) number and inode instead of the
filename while the -I option will just show the device (major, minor) number.
The -c option will display the cumulative count of the open, close, read and writes rather
than the averages.
OPTIONS
fnotifystat options are as follow:
-c dump cumulative totals over all time rather than totals over each sample period.
-d strip full directory path off the filenames.
-f force statistics output even if no file activity has occurred during the last
sampling period.
-D order statistics by unique device. Rather than ordering periodic statistics by
unique filename, instead order them by unique device (major, minor) number. This
allows one to see file activity on a per device basis.
-h show help
-i pathnames to include in filename activity. By default, all mounted filesystems are
monitored, however, this may produce to much information. The -i option allows one
to provide a comma separated list of just the specific paths to monitor.
-I order statistics by unique device and inode. Rather than ordering periodic
statistics by unique filename, instead order them by unique device (major, minor)
and inode number.
-m merge events. The default -v verbose output will show all new events that
fnotifystat detects on a file by a specific process. The -m option will merge all
consecutive events that occur on the same file from the same process to reduce the
amount of event output.
-n no periodic statistics, just verbose mode only. Do not display periodic file
activity statistics, but just show the verbose mode -v file activity.
-p proclist
monitor specific processes. proclist is a comma separated list of process IDs or
process names to monitor.
-P sort stats by pid first, then by totals and filename
-s turn off data scaling. By default the read, write, open and close counts are
displayed by scaling by multiple of thousands with suffixes of K (thousands), M
(millions), B (billions). The -s option disables this, resulting in less
aesthetically pleasing unaligned columns of data.
-t N only display the top busiest N files.
-T show timestamp
-v verbose mode, dump all file activity. This will display the following file access
information:
Date (in DD/MM/YY format)
Time (in HH:MM:SS format)
Event count
Access type, O=Open, C=Close, R=Read, W=Write
Process ID
Process Name
Name of accessed file
Note that the names of deleted filenames cannot be determined and are flagged by
the "(deleted)" tag.
-x pathnames to exclude from filename activity. By default, all mounted filesystems
are monitored, however, this may produce to much information. The -x option allows
one to provide a comma separated list of pathnames to exclude. Matching is
performed on partial pathnames, for example -x /pro will exclude all paths starting
with /pro, such as /proc. Note that excluding a file with -x takes higher
precedence over including a file with -i.
SIGUSR1
Sending SIGUSR1 to fnotifystat will toggle the verbose option (-v) on/off.
EXAMPLES
Show file activity every second until stopped.
sudo fnotifystat
Show the top 10 active files every 60 seconds until stopped.
sudo fnotifystat -t 10 60
Show file acivity every 10 seconds just 6 times.
sudo fnotifystat 10 6
Show file activity of thunderbird and process ID 1827.
sudo fnotifystat -p thunderbird,1827
Show every file notify event and the top 20 active activity files over a single period of
5 minutes.
sudo notifystat -v -d -c 5m 1
Just show every file notify event on /sys and /proc and no periodic statisics.
sudo fnotifystat -n -i /sys,/proc
AUTHOR
fnotifystat was written by Colin Ian King <colin.i.king@gmail.com>
This manual page was written by Colin Ian King <colin.i.king@gmail.com>, for the Ubuntu
project (but may be used by others).
COPYRIGHT
Copyright © 2014-2021 Canonical Ltd, Copyright © 2021-2022 Colin Ian King.
This is free software; see the source for copying conditions. There is NO warranty; not
even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
November 15, 2021 FNOTIFYSTAT(8)