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annotate bin/prename @ 423:f4a29755dd01

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author Edho Arief <edho@myconan.net>
date Fri, 28 Dec 2012 09:09:28 -0800
parents f6d29c03142f
children 0d928126fcf6
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1 #!/usr/bin/perl -w
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2 #
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3 # This script was developed by Robin Barker (Robin.Barker@npl.co.uk),
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4 # from Larry Wall's original script eg/rename from the perl source.
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5 #
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6 # This script is free software; you can redistribute it and/or modify it
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7 # under the same terms as Perl itself.
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8 #
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9 # Larry(?)'s RCS header:
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10 # RCSfile: rename,v Revision: 4.1 Date: 92/08/07 17:20:30
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11 #
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12 # $RCSfile: rename,v $$Revision: 1.5 $$Date: 1998/12/18 16:16:31 $
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13 #
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14 # $Log: rename,v $
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15 # Revision 1.5 1998/12/18 16:16:31 rmb1
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16 # moved to perl/source
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17 # changed man documentation to POD
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18 #
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19 # Revision 1.4 1997/02/27 17:19:26 rmb1
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20 # corrected usage string
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21 #
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22 # Revision 1.3 1997/02/27 16:39:07 rmb1
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23 # added -v
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24 #
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25 # Revision 1.2 1997/02/27 16:15:40 rmb1
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26 # *** empty log message ***
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27 #
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28 # Revision 1.1 1997/02/27 15:48:51 rmb1
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29 # Initial revision
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30 #
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31
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32 use strict;
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33
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34 use Getopt::Long;
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35 Getopt::Long::Configure('bundling');
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36
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37 my ($verbose, $no_act, $force, $op);
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38
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39 die "Usage: rename [-v] [-n] [-f] perlexpr [filenames]\n"
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40 unless GetOptions(
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41 'v|verbose' => \$verbose,
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42 'n|no-act' => \$no_act,
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43 'f|force' => \$force,
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44 ) and $op = shift;
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45
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46 $verbose++ if $no_act;
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47
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48 if (!@ARGV) {
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49 print "reading filenames from STDIN\n" if $verbose;
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50 @ARGV = <STDIN>;
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51 chop(@ARGV);
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52 }
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53
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54 for (@ARGV) {
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55 my $was = $_;
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56 eval $op;
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57 die $@ if $@;
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58 next if $was eq $_; # ignore quietly
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59 if (-e $_ and !$force)
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60 {
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61 warn "$was not renamed: $_ already exists\n";
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62 }
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63 elsif ($no_act or rename $was, $_)
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64 {
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65 print "$was renamed as $_\n" if $verbose;
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66 }
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67 else
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68 {
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69 warn "Can't rename $was $_: $!\n";
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70 }
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71 }
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72
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73 __END__
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74
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75 =head1 NAME
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76
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77 rename - renames multiple files
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78
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79 =head1 SYNOPSIS
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80
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81 B<rename> S<[ B<-v> ]> S<[ B<-n> ]> S<[ B<-f> ]> I<perlexpr> S<[ I<files> ]>
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82
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83 =head1 DESCRIPTION
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84
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85 C<rename>
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86 renames the filenames supplied according to the rule specified as the
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87 first argument.
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88 The I<perlexpr>
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89 argument is a Perl expression which is expected to modify the C<$_>
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90 string in Perl for at least some of the filenames specified.
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91 If a given filename is not modified by the expression, it will not be
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92 renamed.
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93 If no filenames are given on the command line, filenames will be read
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94 via standard input.
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95
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96 For example, to rename all files matching C<*.bak> to strip the extension,
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97 you might say
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98
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99 rename 's/\.bak$//' *.bak
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100
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101 To translate uppercase names to lower, you'd use
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102
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103 rename 'y/A-Z/a-z/' *
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104
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105 =head1 OPTIONS
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106
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107 =over 8
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108
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109 =item B<-v>, B<--verbose>
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110
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111 Verbose: print names of files successfully renamed.
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112
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113 =item B<-n>, B<--no-act>
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114
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115 No Action: show what files would have been renamed.
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116
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117 =item B<-f>, B<--force>
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118
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119 Force: overwrite existing files.
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120
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121 =back
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122
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123 =head1 ENVIRONMENT
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124
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125 No environment variables are used.
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126
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127 =head1 AUTHOR
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128
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129 Larry Wall
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130
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131 =head1 SEE ALSO
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132
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133 mv(1), perl(1)
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134
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135 =head1 DIAGNOSTICS
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136
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137 If you give an invalid Perl expression you'll get a syntax error.
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138
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139 =head1 BUGS
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140
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141 The original C<rename> did not check for the existence of target filenames,
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142 so had to be used with care. I hope I've fixed that (Robin Barker).
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143
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144 =cut