2008-03-24T23:40:27Z Photos, electronics, cnc, and more Jeff Eplerjepler@unpythonic.net 2008-03-24T23:40:27Z 2008-03-24T23:40:27Z https://emergent.unpythonic.net/01206402027 With $100 terabyte hard disks but without inexpensive backup media and drives, it is often necessary to mark parts of a filesystem 'nodump' to get useful backups on a reasonable number of pieces of media. <p><tt>turd</tt> is a program I cooked up to help with this: it is like the standard <tt>du</tt> utility, except that it consults the filesystem nodump flag. This means the output of <tt>turd</tt> approximates the amount of tape space required to dump the named directory. Like <tt>du -x</tt>, <tt>turd</tt> never recurses into a different filesystem. <p><tt>tar0</tt> is a program that takes a list of NUL-terminated filenames and directory names on stdin and writes a tar file to stdout. For each filename or directory the file or directory itself is written; the contents of directories are not recursively written. To create a tar of only files changed since the last level-1 dump, use <blockquote><pre> cd /mount-point; turd -F -1 | tar0 &gt; level1.tar </pre></blockquote> <p><tt>turd</tt> and <tt>tar0</tt> ar released under the terms of the GNU General Public License, version 2 or later. <p>There is now a git repository for turd: <a href="http://git.unpy.net/view/turd.git/">http://git.unpy.net/view/turd.git/</a> <p><b>Files currently attached to this page:</b> <table cellpadding=5 style="width:auto!important; clear:none!important"><col><col style="text-align: right"><tr bgcolor=#eeeeee><td><a href="https://media.unpythonic.net/emergent-files/01206402027/tar0">tar0</a></td><td>457 bytes</td></tr><tr bgcolor=#dddddd><td><a href="https://media.unpythonic.net/emergent-files/01206402027/turd">turd</a></td><td>7.3kB</td></tr></table><p>