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cristobalaz · #1 (**permalink**) 17-06-2009, 02:21 AM

Good afternoon.

I recently set up an SFTP server on one of our servers, and I have two issues I wanted to get resolved and I can't figure out an easy way to do it.

1. I would like an automatic email to be generated and sent to the user that uploaded a file to the FTP server. For example, it would state that <name of file> has been received at <time> on <date>.

2. I would also like an email generated and sent to an internal email group about any file that is uploaded to the server. For example, it would show: A new <file name> file has been uploaded in <folder name> on <date> at <server time>.

If anyone knows of a way to accomplish this, and could possibly help me out in a walk through of getting this set up, I would really appreciate it.

Thank you.

nixcraft · #2 (**permalink**) 17-06-2009, 03:01 AM

How do you upload file? Do you use a script to upload file or it is done by someone else by typing commands or sftp client?

If it is a script, the same script can send an email update.

If it is a manual method, you can use something called file FAM. It can monitors files and directories, notifying changes including new files. You need to install dnotify program using apt-get command:

Code:

apt-get install dnotify

Print change to the terminal every time a file created in /tmp

Code:

dnotify -C /tmp -e echo "File Created"

Execute the script called foo every time a file in /var/pub/ftp is created or deleted:

Code:

dnotify -CD /var/pub/ftp -e /path/to/script

Where /path/to/script can be as follows:

PHP Code:


			
#!/bin/bash
echo "File Uploaded at Server" | /bin/mail -S 'File Uploaded' you@example.com

Above is pretty simple example, you need to install the following programs to write a good shell script:

gamin - File and directory monitoring system
incron - cron-like daemon which handles filesystem events
inotail - tail replacement using inotify
inoticoming - trigger actions when files hit an incoming directory
inotify-tools - command-line programs providing a simple interface to inotify
iwatch - realtime filesystem monitoring program using inotify

Install the above program and read the man pages. If you need any more help just hit reply button.

cristobalaz · #3 (**permalink**) 17-06-2009, 04:09 AM

out of curiosity, any reason for using dnotify versus inotify?

nixcraft · #4 (**permalink**) 17-06-2009, 04:44 AM

dnotify is user land tool and do not requires to write code in C / C++ or other supported API. This is perfect for a shell script.

inotify provide the inotify API provides a mechanism for monitoring file system events. If you are willing to write code in Python, C, C++ go with this.

If performance is concern select inotify as it is ten time faster than dnotify.

HTH

cristobalaz · #5 (**permalink**) 17-06-2009, 05:08 AM

When I go to put in the first piece of code

Code:

dnotify -C /var/ftp -e echo "File Created"

it just sits there after pressing enter. I let it sit for about 5 minutes, and it seems to be just hanging.

I installed all of the suggested packages from your post, so is there possibly something I am doing wrong?

nixcraft · #6 (**permalink**) 17-06-2009, 05:10 AM

Did any one upload a file in /var/ftp ? For testing try:

PHP Code:


			
echo "This is a test" > /var/ftp/tmp.txt

You should see a message on screen.

cristobalaz · #7 (**permalink**) 17-06-2009, 05:14 AM

What I mean is that when I did the following

Code:

# dnotify -C /tmp -e echo "File Created"

I hit enter, and it goes down to the next line and is blank...just sits there and does not go back to the command line.

raj · #8 (**permalink**) 17-06-2009, 07:22 AM

I think command is waiting for event. You may go into background:

Quote:

Run dnotify in the background - detach from terminal. Prior to executing any commands, dnotify will change the current directory to the root directory (‘/’). Relative path names of directories to monitor will be made absolute automaticly, but make sure the command you specify does not rely on the current directory being unchanged.

So it should be

Code:

dnotify -b -C /var/ftp -e echo "File Created"

or may be

Code:

dnotify -b -C /var/ftp -e logger "File Created"

To see update run tail -f over /var/log/messages

Code:

tail -f var/log/messages

From another terminal upload file using ftp or lftp client.

cristobalaz · #9 (**permalink**) 18-06-2009, 04:16 AM

Thank you for your help, I was able to get this working using the dnotify in background mode. I actually wrote the following shell script to do this:

Code:

#!/bin/bash

echo "To:xxxx@xxxx.com" > /var/upload.txt
echo "From:xxxx@xxxx.com.com">>/var/upload.txt
echo "Subject:blah blah">>/var/upload.txt
echo "blah blah message">>/var/upload.txt
cat /var/upload.txt|/var/qmail/bin/qmail-inject

Now, can anyone tell me from that above shell script how I would get it to insert which directory the file was uploaded to? If possible, the time and date also?

nixcraft · #10 (**permalink**) 18-06-2009, 06:34 AM

Use the string {} in the command specification is replaced by the name of the directory that was updated.

Code:

 dnotify -b -C /var/ftp -e /home/you/yourscript.sh {}

And /home/you/yourscript.sh

Code:

#!/bin/bash
DIR="$1"
echo "To:xxxx@xxxx.com" > /var/upload.txt
echo "From:xxxx@xxxx.com.com">>/var/upload.txt
echo "Subject:blah blah">>/var/upload.txt
echo "echo $DIR .... blah blah message">>/var/upload.txt
cat /var/upload.txt|/var/qmail/bin/qmail-inject

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Ubuntu Linux File Upload / Creation Email Notification

Ubuntu Linux File Upload / Creation Email Notification

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raj (17-06-2009)