Tux Training

Add right-click virus scanning capability to Nautilus

December 2, 2008, 11:36 am

Below is simple example on how to scan any file right in Nautilus via the right click menu. Enjoy.

sudo apt-get install (or yum/zypper/pacman, etc.) clamav
vim ~/.gnome2/nautilus-scripts/virus-scan
Paste the following in the file:

#!/bin/bash
#
#  Nautilus anti-virus scanner script v1.2 - Uses Clam Anti-virus
#  Written by Robert Pectol, December 2005 - http://rob.pectol.com
#
#  This program is free software.  It is distributed in the hope
#  that it will be useful, but WITHOUT ANY WARRANTY; without even
#  the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
#  PURPOSE.  See the GNU General Public License for more details.
######################################################################

#  Set some variables used in the script
files=$1
if [ "$NAUTILUS_SCRIPT_CURRENT_URI" == "x-nautilus-desktop:///" ]; then
        files_path=$HOME"/Desktop"
else
        files_path=`echo $NAUTILUS_SCRIPT_CURRENT_URI | sed -e 's/^file:\/\///'`
fi
gui=`which zenity`
vscan=`which clamscan`

#  Function to scan file(s)
scan_it()
{
        touch /tmp/scanresult
        if [ "$files_path" = "" ]; then
                #  Script can run from launchers, scripts other than from Nautilus, etc. (doesn't require $NAUTILUS_SCRIPT_CURRENT_URI)
                result=`$vscan -r "$files" --log=/tmp/scanresult | $gui --title "Virus Scanner" --progress \
                --text="Scanning $files..." --pulsate --auto-close; cat /tmp/scanresult` &> /dev/null
        else
                result=`$vscan -r "$files_path/$files" --log=/tmp/scanresult | $gui --title "Virus Scanner" --progress \
                --text="Scanning $files..." --pulsate --auto-close; cat /tmp/scanresult` &> /dev/null
        fi
        rm -f /tmp/scanresult &> /dev/null
        #  Feedback - if scan ended with errors or was terminated prematurely...
        if [ "$result" = "" ]; then
                err_text="Virus scan on $files terminated!"
                errors
        fi
        #  Feedback - if scan completed successfully...
        clean=`echo $result | grep 'FOUND'`
        #  Alter gui feedback according to presense/absense of virus(s) found during scan
        if [ "$clean" != "" ]; then
                $gui  --title "Virus Found!" --error --text="$result" &> /dev/null
        else
                $gui  --title "Virus Scan Results!" --info --text="$result" & &> /dev/null
        fi
}
#  Function to handle errors
errors()
{
        $gui  --title "Virus Scan Error!" --error --text="$err_text" &> /dev/null
        exit 1
}

#  Check for presense of required utilities
if [[ -x "$vscan" && -x "$gui" ]]; then
        scan_it
else
        if [ -x "$vscan" ]; then
                echo "Zenity was NOT found on the system!"
                exit 1
        else
                err_text="Clam Anti-virus was NOT found on the system!"
                errors
        fi
fi
exit 0

4. chmod 755 ~/.gnome2/nautilus-scripts/virus-scan