Created
April 6, 2018 16:43
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A Perl-regex based copy script, derived from the rename script
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I really like the regex syntax of the rename perl script, e.g.: | |
rename "s/OldFile/NewFile/" OldFile* | |
I simply wanted the same thing with a copy command: | |
copy "s/OldFile/NewFile/" OldFile* | |
So here it is! | |
Installation: Put it in /usr/local/bin or elsewhere on your path. |
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#!/usr/bin/perl -w | |
# | |
# This script is derived from the rename unix utility by Robin Barker, | |
# which itself is based on Larry Wall's original script eg/rename | |
# from the perl source. | |
# | |
# This script is free software; you can redistribute it and/or modify it | |
# under the same terms as Perl itself. | |
# | |
# $Log: copy,v $ | |
# Revision 1.0 2018/04/06 16:16:31 jward | |
# created copy script | |
# | |
use strict; | |
use File::Copy; | |
use Getopt::Long; | |
Getopt::Long::Configure('bundling'); | |
my ($verbose, $no_act, $force, $op); | |
die "Usage: copy [-v] [-n] [-f] perlexpr [filenames]\n" | |
unless GetOptions( | |
'v|verbose' => \$verbose, | |
'n|no-act' => \$no_act, | |
'f|force' => \$force, | |
) and $op = shift; | |
$verbose++ if $no_act; | |
if (!@ARGV) { | |
print "reading filenames from STDIN\n" if $verbose; | |
@ARGV = <STDIN>; | |
chop(@ARGV); | |
} | |
for (@ARGV) { | |
my $was = $_; | |
eval $op; | |
die $@ if $@; | |
next if $was eq $_; # ignore quietly | |
if (-e $_ and !$force) | |
{ | |
warn "$was not copied: $_ already exists\n"; | |
} | |
elsif ($no_act or copy $was, $_) | |
{ | |
print "$was copied as $_\n" if $verbose; | |
} | |
else | |
{ | |
warn "Can't copy $was $_: $!\n"; | |
} | |
} | |
__END__ | |
=head1 NAME | |
copy - copies multiple files | |
=head1 SYNOPSIS | |
B<copy> S<[ B<-v> ]> S<[ B<-n> ]> S<[ B<-f> ]> I<perlexpr> S<[ I<files> ]> | |
=head1 DESCRIPTION | |
C<copy> | |
copies the filenames supplied according to the rule specified as the | |
first argument. | |
The I<perlexpr> | |
argument is a Perl expression which is expected to modify the C<$_> | |
string in Perl for at least some of the filenames specified. | |
If a given filename is not modified by the expression, it will not be | |
copied. | |
If no filenames are given on the command line, filenames will be read | |
via standard input. | |
For example, to copy all files matching C<*.bak> to C<*.tmp>, | |
you might say: | |
copy 's/\.bak$/.tmp/' *.bak | |
To copy a set of source files (e.g. MyCode.c and MyCode.h) to a new | |
set of source files (MyNewCode.c and MyNewCode.h, repsectively), | |
you could use: | |
copy 's/MyCode\./MyNewCode./' MyCode.* | |
=head1 OPTIONS | |
=over 8 | |
=item B<-v>, B<--verbose> | |
Verbose: print names of files successfully copied. | |
=item B<-n>, B<--no-act> | |
No Action: show what files would have been copied. | |
=item B<-f>, B<--force> | |
Force: overwrite existing files. | |
=back | |
=head1 ENVIRONMENT | |
No environment variables are used. | |
=head1 AUTHOR | |
Larry Wall | |
=head1 SEE ALSO | |
mv(1), perl(1) | |
=head1 DIAGNOSTICS | |
If you give an invalid Perl expression you'll get a syntax error. | |
=head1 BUGS | |
The original C<copy> did not check for the existence of target filenames, | |
so had to be used with care. I hope I've fixed that (Robin Barker). | |
=cut |
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