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Execute a script once a file uploaded to directory

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# 1  
Old 03-30-2020
Execute a script once a file uploaded to directory

Hello guys,

I would like to execute the below script once a file is uploaded to directory:


tail -F "$log" |\
        grep --line-buffered -Ff "$words" |\
        while read -r ip junk; do
        #while read -r ip; do
                grep -qxF "$ip" "$banned" || (
                iptables -A INPUT -s "$ip" -j DROP
                echo `pwd`\n Banned IP "$ip" on: `date` "$log" | grep "$ip" | mail -s "New banned IP: `date`" "$adminemail"
                echo "$ip" >> "$banned"

# Send report with access by Response Codes
RESPONSE=$( cat "$log" | cut -d '"' -f3 | cut -d ' ' -f2 | sort | uniq -c | sort -rn )
echo Responses Codes "$RESPONSE" on: `date` | mail -s "Responses Codes: `date`" "$adminemail"

Thanks in advance
# 2  
Old 03-30-2020
Have you considered inotifywait(1) provided by the inotify-tools package on some distributions, this can run your script whenever a file appears in specified directories eg:

inotifywait -m /your/upload/file/path -e create -e moved_to |
    while read dir action file
        # run your script passing the directory, filename and action
        /usr/local/bin/yourscript $dir $file $action

This User Gave Thanks to Chubler_XL For This Post:
# 3  
Old 04-02-2020
Thanks for reply and sorry for the delay.

I did a simple script to monitor after installing inotify-tools, and place it in cron:
@reboot /root/shellDetector/

With grep:
ps -eaf | grep | grep -v grep

The script in not running on boot

inotifywait -m /home/uvid/www/Uploads -e create -e moved_to |
            while read -r dir action file; do
                            echo "The file '$file' appeared in directory '$dir' via '$action'"
                                    # do something with the file

# 4  
Old 04-02-2020
Did cron log the script's start? Add some logging to your script, so you know that it started, and why and when it exited, either to syslog, or a individual log file.
# 5  
Old 04-02-2020
Well I added this to the cron, rebooted then the cron log is created but empty:

@reboot /root/shellDetector/ >> /root/shellDetector/error.log

# 6  
Old 04-02-2020
Add logging to your script!

Anything in the system logs, along this line?
Apr  2 14:17:02 UsersPC19 CRON[10758]: (root) CMD (   cd / && run-parts --report /etc/cron.hourly)

Possibly an error message? What user is this run under?
# 7  
Old 04-02-2020
Well I checked the syslog, there is a red line on that specific script:

Apr  2 16:36:09 SERVER CRON[1151]: (root) CMD (/root/shellDetector/ >> /root/shellDetector/error.log)

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