"distruggi", permanently delete files (Thunar custom action)

#!/bin/bash
# Author: Frash Pikass
# Filename: distruggi
#
# !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! CAUTION !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
# This is a potentially dangerous piece of code. Make sure to change owner to
# root and make sure only root has execution permissions with
#
#   sudo chown root distruggi
#   sudo chmod 744 distruggi
#
# to avoid accidental execution.
#
# This is based on shred, so the disclaimer in man shred is still valid:
#
#     CAUTION: Note that shred relies on a very  important  assumption:  that
#     the  file system overwrites data in place.  This is the traditional way
#     to do things, but many modern file system designs do not  satisfy  this
#     assumption.   The following are examples of file systems on which shred
#     is not effective, or is not guaranteed to be effective in all file sys‐
#     tem modes:
#
#     * log-structured or journaled file systems, such as those supplied with
#     AIX and Solaris (and JFS, ReiserFS, XFS, Ext3, etc.)
#
#     * file systems that write redundant data and  carry  on  even  if  some
#     writes fail, such as RAID-based file systems
#
#     *  file  systems  that  make snapshots, such as Network Appliance's NFS
#     server
#
#     * file systems that cache in temporary locations, such as NFS version 3
#     clients
#
#     * compressed file systems
#
#     In  the  case  of  ext3 file systems, the above disclaimer applies (and
#     shred is thus of limited  effectiveness)  only  in  data=journal  mode,
#     which  journals  file  data  in addition to just metadata.  In both the
#     data=ordered (default) and data=writeback modes, shred works as  usual.
#     Ext3  journaling  modes  can  be  changed  by adding the data=something
#     option to the mount  options  for  a  particular  file  system  in  the
#     /etc/fstab file, as documented in the mount man page (man mount).
#
#     In  addition, file system backups and remote mirrors may contain copies
#     of the file that cannot be removed, and that will allow a shredded file
#     to be recovered later.
#
# !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! CAUTION !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
#
# DESCRIPTION AND INSTRUCTIONS:
# distruggi asks for permissions, asks for confirmation then permanently
# deletes the argument file. It's optimized for integration with Thunar.
# Launch with:
#   gksudo ./distruggi fileName filePath
#
# To add this as a custom action in Thunar, make sure the script distruggi is
# in /usr/bin then follow the tutorial at
#   http://docs.xfce.org/xfce/thunar/custom-actions
# Put this line in the command field:
#   gksudo /usr/bin/./distruggi %n %f
# and make sure to check the right flags in the Appearance Conditions tab so
# that file scheme is * and all boxes are checked except for Directories.

zenity  --question --title "Warning!"   --text  "Are you sure you want to permanently delete the file '$1'?" && test $? -eq 0 && (shred -n 200 -z -u "$2"; exit 0)


# In Italian
# zenity  --question --title "Attenzione!"   --text  "Vuoi davvero cancellare il file '$1' in modo sicuro?" && test $? -eq 0 && (shred -n 200 -z -u "$2"; exit 0)