Beefy Boxes and Bandwidth Generously Provided by pair Networks
good chemistry is complicated,
and a little bit messy -LW

comment on

( #3333=superdoc: print w/replies, xml ) Need Help??
#!/usr/bin/perl use strict; use warnings; =head1 NAME rename - renames multiple files =head1 SYNOPSIS rename [ -0 ] [ -d ] [ -f ] [ -v ] perlexpr [ files ] rename -s [ -0 ] [ -d ] [ -f ] [ -g ] [ -v ] from to [ files ] rename -z [ -0 ] [ -d ] [ -f ] [ -v ] [ -z ] [ -z ] [ files ] rename -h =head1 DESCRIPTION C<rename> renames the filenames supplied according to the rules specif +ied. If a given filename is not modified, it will not be renamed. If +no filenames are given on the command line, filenames will be read vi +a standard input. For example, to translate uppercase names to lower, you'd use rename 'y/A-Z/a-z/' * To rename all files matching C<*.bak> to strip the extension, you migh +t say rename -s .bak '' *.bak Although if any of the files has C<.bak> in another part of its filena +me as well, you'll have to resort to rename 's/\.bak$//' *.bak If you have a directory full of inconveniently named files, you can us +e C<-z> to clean them up for you. =head1 ARGUMENTS =over 4 =item B<-h>, B<--help> Browse the manpage. =item I<nothing> A C<perlexpr> parameter is expected, which should be a Perl expression + that assumes the filename in the C<$_> variable and modifies it for +the filenames to be renamed. =item B<-s>, B<--subst>, B<--simple> Perform a simple textual substitution of C<from> to C<to>. The C<from> + and C<to> parameters must immediately follow the argument. This is equivalent to supplying a C<perlexpr> of C<s/\Qfrom/to/;>. =item B<-z>, B<--sanitize> If you specify this option once, (consecutive) blanks in filenames wil +l be replaced by underscores. If you specify it twice, control charac +ters in filenames will also be substituted by underscores. If you spe +cify it thrice, filenames will also be converted to all lowercase. =back =head1 OPTIONS =over 4 =item B<-0>, B<--null> When reading file names from C<STDIN>, split on null bytes instead of +newlines. This is useful in combination with GNU find's C<-print0> op +tion, GNU grep's C<-Z> option, and GNU sort's C<-z> option, to name j +ust a few. B<Only valid if no filenames have been given on the comman +dline.> =item B<-d>, B<--dryrun> Show how the files would be renamed, but don't actually do anything. =item B<-f>, B<--force> Rename even when a file with the destination name already exists. =item B<-g>, B<--global> In simple mode, substitute all occurences of the string given instead +of only the first one. B<Only valid if you specified C<-s>.> =item B<-v>, B<--verbose> Print additional information about the operations executed. =back =head1 ENVIRONMENT No environment variables are used. =head1 AUTHORS Larry Wall, Robin Barker, Aristotle Pagaltzis =head1 SEE ALSO mv(1), perl(1), find(1), grep(1), sort(1) =head1 DIAGNOSTICS If you give an invalid Perl expression you'll get a syntax error. =head1 BUGS None currently known. =cut use Pod::Usage; use Getopt::Long; Getopt::Long::Configure('bundling', 'no_ignore_case'); GetOptions( 'h|help' => \my $opt_help, 's|subst|simple' => \my $opt_simple, 'z|sanitize+' => \my $opt_sanitize, '0|null!' => \my $opt_null, 'f|force!' => \my $opt_force, 'g|global!' => \my $opt_global, 'd|dryrun!' => \my $opt_dryrun, 'v|verbose!' => \my $opt_verbose, ) or pod2usage( -verbose => 1 ); pod2usage( -verbose => 2 ) if $opt_help; pod2usage( -verbose => 1 ) if $opt_global and not $opt_simple; sub DEBUG { print "@_\n" if $opt_verbose } sub INFO { print "@_\n" if $opt_verbose or $opt_dryrun } sub ERROR { print "@_\n" } my $code = $opt_simple ? do { pod2usage( -verbose => 1 ) if @ARGV < 3; my $from = shift @ARGV; my $to = shift @ARGV; $opt_global ? sub { s/\Q$from/$to/ } : sub { s/\Q$from/$to/g }; } : $opt_sanitize ? sub { s/[_[:blank:]]+/_/g; s/[_[:cntrl:]]+/_/g if $opt_sanitize > 1; s/([[:upper:]]+)/\L$1/g if $opt_sanitize > 2; } : do { my $perlexpr = shift; pod2usage( -verbose => 1 ) if not defined $perlexpr; my $evaled = eval "sub { $perlexpr }"; die $@ if $@; $evaled; }; pod2usage( -verbose => 1 ) if $opt_null and @ARGV; if (!@ARGV) { INFO("Reading filenames from STDIN"); @ARGV = do { if($opt_null) { INFO("Splitting on null bytes"); local $/ = "\0"; } <STDIN>; }; chomp @ARGV; } for (@ARGV) { my $oldname = $_; $code->(); if($oldname eq $_) { DEBUG("'$oldname' unchanged"); next; } WARN("'$oldname' not renamed: '$_' already exists"), next if not $opt_force and -e; if ($opt_dryrun or rename $oldname, $_) { INFO("'$oldname' renamed to '$_'"); } else { ERROR("Can't rename '$oldname' to '$_': $!"); } } INFO('Dry run, no changes were made.') if $opt_dryrun;

In reply to rename 0.2 - an improved version of the script which comes with Perl by Aristotle

Use:  <p> text here (a paragraph) </p>
and:  <code> code here </code>
to format your post; it's "PerlMonks-approved HTML":

  • Posts are HTML formatted. Put <p> </p> tags around your paragraphs. Put <code> </code> tags around your code and data!
  • Titles consisting of a single word are discouraged, and in most cases are disallowed outright.
  • Read Where should I post X? if you're not absolutely sure you're posting in the right place.
  • Please read these before you post! —
  • Posts may use any of the Perl Monks Approved HTML tags:
    a, abbr, b, big, blockquote, br, caption, center, col, colgroup, dd, del, div, dl, dt, em, font, h1, h2, h3, h4, h5, h6, hr, i, ins, li, ol, p, pre, readmore, small, span, spoiler, strike, strong, sub, sup, table, tbody, td, tfoot, th, thead, tr, tt, u, ul, wbr
  • You may need to use entities for some characters, as follows. (Exception: Within code tags, you can put the characters literally.)
            For:     Use:
    & &amp;
    < &lt;
    > &gt;
    [ &#91;
    ] &#93;
  • Link using PerlMonks shortcuts! What shortcuts can I use for linking?
  • See Writeup Formatting Tips and other pages linked from there for more info.
  • Log In?

    What's my password?
    Create A New User
    and the web crawler heard nothing...

    How do I use this? | Other CB clients
    Other Users?
    Others pondering the Monastery: (4)
    As of 2021-03-02 14:28 GMT
    Find Nodes?
      Voting Booth?
      My favorite kind of desktop background is:

      Results (51 votes). Check out past polls.