File:
[LON-CAPA] /
loncom /
debugging_tools /
excise_from_db.pl
Revision
1.3:
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Tue Jun 27 14:37:40 2006 UTC (18 years, 3 months ago) by
albertel
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version_2_8_99_1,
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loncapaMITrelate_1,
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- morphing to use LONCAPA.pm
1: #!/usr/bin/perl -w
2: #
3: # The LearningOnline Network
4: #
5: # excise_from_db.pl - Remove a key from a db file.
6: #
7: # $Id: excise_from_db.pl,v 1.3 2006/06/27 14:37:40 albertel Exp $
8: #
9: # Copyright Michigan State University Board of Trustees
10: #
11: # This file is part of the LearningOnline Network with CAPA (LON-CAPA).
12: #
13: # LON-CAPA is free software; you can redistribute it and/or modify
14: # it under the terms of the GNU General Public License as published by
15: # the Free Software Foundation; either version 2 of the License, or
16: # (at your option) any later version.
17: #
18: # LON-CAPA is distributed in the hope that it will be useful,
19: # but WITHOUT ANY WARRANTY; without even the implied warranty of
20: # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
21: # GNU General Public License for more details.
22: #
23: # You should have received a copy of the GNU General Public License
24: # along with LON-CAPA; if not, write to the Free Software
25: # Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
26: #
27: # /home/httpd/html/adm/gpl.txt
28: #
29: # http://www.lon-capa.org/
30: #
31: #################################################
32: use strict;
33: use GDBM_File;
34: use lib '/home/httpd/lib/perl/';
35: use LONCAPA;
36:
37: #
38: # Options
39: my $fname = shift;
40: my $key = shift;
41:
42: if (! defined($fname) || ! defined($key)) {
43: print "Specify db file and key on command line.".$/.
44: 'excise_from_db.pl roles.db "a very long key"'.$/;
45: exit;
46: }
47:
48: my $dbref =&LONCAPA::locking_hash_tie($fname,&GDBM_WRCREAT());
49: if (! $dbref) {
50: warn "Unable to tie to $fname";
51: next;
52: }
53: delete($dbref->{$key});
54: delete($dbref->{&escape($key)});
55:
56: &LONCAPA::locking_hash_untie($dbref);
57:
58: exit;
59:
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