• Implements a ``trash can'' under GNU/Linux with 'libtrash'
• Description
• install libtrash
• test
• enable libtrash at login
• create user specify config
• use 'cleanTrash' for cleaning Trash via cronjob
• insert cronjob for root
• Important Notes
• Resources

Implements a ``trash can'' under GNU/Linux with 'libtrash'

Sebastian Utz seut@tunemedia.de

last changes

  Revision 1.2  2003/01/25 09:06:51  jonen
    + updated

Description

All stuff here is mainly copied from the libtrash doc.

  libtrash is a shared library which, when preloaded, implements a trash can under GNU/Linux.
  This way, your mistakes (at least those of the "rm -rf dir /" class :-)) will no longer cause 
  the loss of a week's work or your system's binaries.

install libtrash

  apt-get install libtrash

  or for those of you that aren't running Debian GNU/Linux:

  wget http://www.m-arriaga.net/software/libtrash/libtrash-latest.tgz
  tar xzf libtrash-latest.tgz
  cd libtrash-1.7/

  edit Makefile for common settings

  make install (as root)

test

  export LD_PRELOAD=/usr/lib/libtrash/libtrash.so
  rm -r <some_test_file>

enable libtrash at login

  Include this in your ~/.bash_profile(or for system-wide usage in /etc/profile) 
  to enable libtrash every time you log in (or otherwise start a login shell)

  #-------------- snip ---------------------------
  LIBTRASH=/usr/lib/libtrash/libtrash.so

  LIBTRASH_dest=$LIBTRASH
  if test -L $LIBTRASH ; then
     LIBTRASH_dest="$(dirname $LIBTRASH)/$(ls -l "$LIBTRASH" | \
                                         sed -e 's/^.\+ -> //')"
  fi

  if test x${LD_PRELOAD+set} = x -a -f "$LIBTRASH_dest" ; then
     LD_PRELOAD="$LIBTRASH"
     export LD_PRELOAD
     if test x$0 = x-bash ; then
        exec bash ${1+"$@"}
     else
        exec $0 ${1+"$@"}
     fi
  fi
  #-------------- end snip ---------------------------

create user specify config

  - READ /etc/libtrash.conf !!
  - overwrite default values by setting up a ~/.libtrash for each user:

  # sample ~/.libtrash:
  #-------------- snip ---------------------------
  GLOBAL_PROTECTION = YES
  INTERCEPT_FOPEN = YES
  INTERCEPT_FREOPEN = YES
  INTERCEPT_OPEN = YES
  IGNORE_HIDDEN = NO
  IGNORE_EXTENSIONS= o;exe
  #-------------- end snip ---------------------------

use 'cleanTrash' for cleaning Trash via cronjob

  - gunzip & copy '/usr/share/doc/libtrash/examples/cleanTrash/ct2.pl.gz'
    to '/usr/local/bin/cleanTrash' e.g:

      'zcat /usr/share/doc/libtrash/examples/cleanTrash/ct2.pl.gz > /usr/local/bin/cleanTrash'

  - edit '/usr/local/bin/cleanTrash' for local configuration

insert cronjob for root

  - crontab -e (as root)
  - insert:  3,13,23,33,43,53 * * * *   root   /usr/local/bin/cleanTrash

Important Notes

Gerneral

  READ /etc/libtrash.conf !!
  If libtrash.so is global enabled via /etc/profile, a DEFAULT or WRONG ~/.libtrash configuration would
  causes gdm, root writes(if root writes are also protected by lintrash), kde etc. stops working !!

  solution to disable libtrash in enviroment immediately:
    - export LD_PRELOAD=""

XTerm

  to get a login shell, start XTerm with '-ls' (~/.profile will not be executed if not)

Resources

Libtrash - Implements a ``trash can'' under GNU/Linux

  http://www.m-arriaga.net/software/libtrash/

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