sysadmin/linux/mini-howto_trashcan-under-Linux_libtrash.html

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<title>trashcan under GNU/Linux with 'libtrash' mini-HowTo</title>
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<!-- INDEX BEGIN -->

<ul>

        <ul>

                <li><a href="#implements_a_trash_can_under_gnu/linux_with_'libtrash'">Implements a ``trash can'' under GNU/Linux with 'libtrash'</a></li>
                <ul>

                        <li><a href="#description">Description</a></li>
                        <ul>

                                <li><a href="#install_libtrash">install libtrash</a></li>
                                <li><a href="#test">test</a></li>
                                <li><a href="#enable_libtrash_at_login">enable libtrash at login</a></li>
                                <li><a href="#create_user_specify_config">create user specify config</a></li>
                                <li><a href="#use_'cleantrash'_for_cleaning_trash_via_cronjob">use 'cleanTrash' for cleaning Trash via cronjob</a></li>
                                <ul>

                                        <li><a href="#insert_cronjob_for_root">insert cronjob for root</a></li>
                                </ul>

                        </ul>

                        <li><a href="#important_notes">Important Notes</a></li>
                        <li><a href="#resources">Resources</a></li>
                        <li><a href="#authors">Authors</a></li>
                        <li><a href="#last_changes">Last changes</a></li>
                </ul>

        </ul>

</ul>
<!-- INDEX END -->

<hr />
<p>
</p>
<h2><a name="implements_a_trash_can_under_gnu/linux_with_'libtrash'">Implements a ``trash can'' under GNU/Linux with 'libtrash'</a></h2>
<p>
</p>
<h3><a name="description">Description</a></h3>
<pre>
  All stuff here is mainly copied from the libtrash doc.</pre>
<pre>
  libtrash is a shared library which, when preloaded, implements a trash can under GNU/Linux.
  This way, your mistakes (at least those of the &quot;rm -rf dir /&quot; class :-)) will no longer cause 
  the loss of a week's work or your system's binaries.</pre>
<p>
</p>
<h4><a name="install_libtrash">install libtrash</a></h4>
<pre>
  apt-get install libtrash</pre>
<pre>
  or for those of you that aren't running Debian GNU/Linux:
  
  wget <a href="http://www.m-arriaga.net/software/libtrash/libtrash-latest.tgz">http://www.m-arriaga.net/software/libtrash/libtrash-latest.tgz</a>
  tar xzf libtrash-latest.tgz
  cd libtrash-1.7/
  
  edit Makefile for common settings
  
  make install (as root)</pre>
<p>
</p>
<h4><a name="test">test</a></h4>
<pre>
  export LD_PRELOAD=/usr/lib/libtrash/libtrash.so
  rm -r &lt;some_test_file&gt;</pre>
<p>
</p>
<h4><a name="enable_libtrash_at_login">enable libtrash at login</a></h4>
<pre>
  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)</pre>
<pre>
  #-------------- snip ---------------------------
  LIBTRASH=/usr/lib/libtrash/libtrash.so</pre>
<pre>
  LIBTRASH_dest=$LIBTRASH
  if test -L $LIBTRASH ; then
     LIBTRASH_dest=&quot;$(dirname $LIBTRASH)/$(ls -l &quot;$LIBTRASH&quot; | \
                                         sed -e 's/^.\+ -&gt; //')&quot;
  fi</pre>
<pre>
  if test x${LD_PRELOAD+set} = x -a -f &quot;$LIBTRASH_dest&quot; ; then
     LD_PRELOAD=&quot;$LIBTRASH&quot;
     export LD_PRELOAD
     if test x$0 = x-bash ; then
        exec bash ${1+&quot;$@&quot;}
     else
        exec $0 ${1+&quot;$@&quot;}
     fi
  fi
  #-------------- end snip ---------------------------</pre>
<p>
</p>
<h4><a name="create_user_specify_config">create user specify config</a></h4>
<pre>
  - READ /etc/libtrash.conf !!
  - overwrite default values by setting up a ~/.libtrash for each user:</pre>
<pre>
  # sample ~/.libtrash:
  #-------------- snip ---------------------------
  GLOBAL_PROTECTION = YES
  INTERCEPT_FOPEN = YES
  INTERCEPT_FREOPEN = YES
  INTERCEPT_OPEN = YES
  IGNORE_HIDDEN = NO
  IGNORE_EXTENSIONS= o;exe
  #-------------- end snip ---------------------------</pre>
<p>
</p>
<h4><a name="use_'cleantrash'_for_cleaning_trash_via_cronjob">use 'cleanTrash' for cleaning Trash via cronjob</a></h4>
<pre>
  - gunzip &amp; 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 &gt; /usr/local/bin/cleanTrash'</pre>
<pre>
  - edit '/usr/local/bin/cleanTrash' for local configuration</pre>
<p>
</p>
<h5><a name="insert_cronjob_for_root">insert cronjob for root</a></h5>
<pre>
  - crontab -e (as root)
  - insert:  3,13,23,33,43,53 * * * *   root   /usr/local/bin/cleanTrash</pre>
<p>
</p>
<h3><a name="important_notes">Important Notes</a></h3>
<dl>
<dt><strong><a name="item_gerneral">Gerneral</a></strong><br />
</dt>
<dd>
<pre>
  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=&quot;&quot;</pre>
</dd>
<dt><strong><a name="item_xterm">XTerm</a></strong><br />
</dt>
<dd>
<pre>
  to get a login shell, start XTerm with '-ls' (~/.profile will not be execute if not)</pre>
</dd>
</dl>
<p>
</p>
<h3><a name="resources">Resources</a></h3>
<dl>
<dt><strong><a name="item_libtrash_%2d_implements_a_%22trash_can%22_under_gn">Libtrash - Implements a ``trash can'' under GNU/Linux</a></strong><br />
</dt>
<dd>
<pre>
  <a href="http://www.m-arriaga.net/software/libtrash/">http://www.m-arriaga.net/software/libtrash/</a></pre>
</dd>
</dl>
<p>
</p>
<h3><a name="authors">Authors</a></h3>
<pre>
  Sebastian Utz  seut@tunemedia.de</pre>
<p>
</p>
<h3><a name="last_changes">Last changes</a></h3>
<pre>
  Revision 1.1  2003/01/24 17:47:49:
    + create new</pre>

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1	jonen	1.1	<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
2			<html xmlns="http://www.w3.org/1999/xhtml">
3			<head>
4			<title>trashcan under GNU/Linux with 'libtrash' mini-HowTo</title>
5			<link rev="made" href="mailto:root@localhost" />
6			</head>
7
8			<body style="background-color: white">
9
10			<p><a name="__index__"></a></p>
11			<!-- INDEX BEGIN -->
12
13			<ul>
14
15			<ul>
16
17			<li><a href="#implements_a_trash_can_under_gnu/linux_with_'libtrash'">Implements a ``trash can'' under GNU/Linux with 'libtrash'</a></li>
18			<ul>
19
20			<li><a href="#description">Description</a></li>
21			<ul>
22
23			<li><a href="#install_libtrash">install libtrash</a></li>
24			<li><a href="#test">test</a></li>
25			<li><a href="#enable_libtrash_at_login">enable libtrash at login</a></li>
26			<li><a href="#create_user_specify_config">create user specify config</a></li>
27			<li><a href="#use_'cleantrash'_for_cleaning_trash_via_cronjob">use 'cleanTrash' for cleaning Trash via cronjob</a></li>
28			<ul>
29
30			<li><a href="#insert_cronjob_for_root">insert cronjob for root</a></li>
31			</ul>
32
33			</ul>
34
35			<li><a href="#important_notes">Important Notes</a></li>
36			<li><a href="#resources">Resources</a></li>
37			<li><a href="#authors">Authors</a></li>
38			<li><a href="#last_changes">Last changes</a></li>
39			</ul>
40
41			</ul>
42
43			</ul>
44			<!-- INDEX END -->
45
46			<hr />
47			<p>
48			</p>
49			<h2><a name="implements_a_trash_can_under_gnu/linux_with_'libtrash'">Implements a ``trash can'' under GNU/Linux with 'libtrash'</a></h2>
50			<p>
51			</p>
52			<h3><a name="description">Description</a></h3>
53			<pre>
54			All stuff here is mainly copied from the libtrash doc.</pre>
55			<pre>
56			libtrash is a shared library which, when preloaded, implements a trash can under GNU/Linux.
57			This way, your mistakes (at least those of the "rm -rf dir /" class :-)) will no longer cause
58			the loss of a week's work or your system's binaries.</pre>
59			<p>
60			</p>
61			<h4><a name="install_libtrash">install libtrash</a></h4>
62			<pre>
63			apt-get install libtrash</pre>
64			<pre>
65			or for those of you that aren't running Debian GNU/Linux:
66
67			wget <a href="http://www.m-arriaga.net/software/libtrash/libtrash-latest.tgz">http://www.m-arriaga.net/software/libtrash/libtrash-latest.tgz</a>
68			tar xzf libtrash-latest.tgz
69			cd libtrash-1.7/
70
71			edit Makefile for common settings
72
73			make install (as root)</pre>
74			<p>
75			</p>
76			<h4><a name="test">test</a></h4>
77			<pre>
78			export LD_PRELOAD=/usr/lib/libtrash/libtrash.so
79			rm -r <some_test_file></pre>
80			<p>
81			</p>
82			<h4><a name="enable_libtrash_at_login">enable libtrash at login</a></h4>
83			<pre>
84			Include this in your ~/.bash_profile(or for system-wide usage in /etc/profile)
85			to enable libtrash every time you log in (or otherwise start a login shell)</pre>
86			<pre>
87			#-------------- snip ---------------------------
88			LIBTRASH=/usr/lib/libtrash/libtrash.so</pre>
89			<pre>
90			LIBTRASH_dest=$LIBTRASH
91			if test -L $LIBTRASH ; then
92			LIBTRASH_dest="$(dirname $LIBTRASH)/$(ls -l "$LIBTRASH" \| \
93			sed -e 's/^.\+ -> //')"
94			fi</pre>
95			<pre>
96			if test x${LD_PRELOAD+set} = x -a -f "$LIBTRASH_dest" ; then
97			LD_PRELOAD="$LIBTRASH"
98			export LD_PRELOAD
99			if test x$0 = x-bash ; then
100			exec bash ${1+"$@"}
101			else
102			exec $0 ${1+"$@"}
103			fi
104			fi
105			#-------------- end snip ---------------------------</pre>
106			<p>
107			</p>
108			<h4><a name="create_user_specify_config">create user specify config</a></h4>
109			<pre>
110			- READ /etc/libtrash.conf !!
111			- overwrite default values by setting up a ~/.libtrash for each user:</pre>
112			<pre>
113			# sample ~/.libtrash:
114			#-------------- snip ---------------------------
115			GLOBAL_PROTECTION = YES
116			INTERCEPT_FOPEN = YES
117			INTERCEPT_FREOPEN = YES
118			INTERCEPT_OPEN = YES
119			IGNORE_HIDDEN = NO
120			IGNORE_EXTENSIONS= o;exe
121			#-------------- end snip ---------------------------</pre>
122			<p>
123			</p>
124			<h4><a name="use_'cleantrash'_for_cleaning_trash_via_cronjob">use 'cleanTrash' for cleaning Trash via cronjob</a></h4>
125			<pre>
126			- gunzip & copy '/usr/share/doc/libtrash/examples/cleanTrash/ct2.pl.gz'
127			to '/usr/local/bin/cleanTrash' e.g:
128
129			'zcat /usr/share/doc/libtrash/examples/cleanTrash/ct2.pl.gz > /usr/local/bin/cleanTrash'</pre>
130			<pre>
131			- edit '/usr/local/bin/cleanTrash' for local configuration</pre>
132			<p>
133			</p>
134			<h5><a name="insert_cronjob_for_root">insert cronjob for root</a></h5>
135			<pre>
136			- crontab -e (as root)
137			- insert: 3,13,23,33,43,53 * * * * root /usr/local/bin/cleanTrash</pre>
138			<p>
139			</p>
140			<h3><a name="important_notes">Important Notes</a></h3>
141			<dl>
142			<dt><strong><a name="item_gerneral">Gerneral</a></strong><br />
143			</dt>
144			<dd>
145			<pre>
146			READ /etc/libtrash.conf !!
147			If libtrash.so is global enabled via /etc/profile, a DEFAULT or WRONG ~/.libtrash configuration would
148			causes gdm, root writes(if root writes are also protected by lintrash), kde etc. stops working !!
149
150			solution to disable libtrash in enviroment immediately:
151			- export LD_PRELOAD=""</pre>
152			</dd>
153			<dt><strong><a name="item_xterm">XTerm</a></strong><br />
154			</dt>
155			<dd>
156			<pre>
157			to get a login shell, start XTerm with '-ls' (~/.profile will not be execute if not)</pre>
158			</dd>
159			</dl>
160			<p>
161			</p>
162			<h3><a name="resources">Resources</a></h3>
163			<dl>
164			<dt><strong><a name="item_libtrash_%2d_implements_a_%22trash_can%22_under_gn">Libtrash - Implements a ``trash can'' under GNU/Linux</a></strong><br />
165			</dt>
166			<dd>
167			<pre>
168			<a href="http://www.m-arriaga.net/software/libtrash/">http://www.m-arriaga.net/software/libtrash/</a></pre>
169			</dd>
170			</dl>
171			<p>
172			</p>
173			<h3><a name="authors">Authors</a></h3>
174			<pre>
175			Sebastian Utz seut@tunemedia.de</pre>
176			<p>
177			</p>
178			<h3><a name="last_changes">Last changes</a></h3>
179			<pre>
180			Revision 1.1 2003/01/24 17:47:49:
181			+ create new</pre>
182
183			</body>
184
185			</html>
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