linux-l: Perl-Script

Philipp Grau phgrau at zedat.fu-berlin.de
Do Mär 30 13:53:37 CEST 2000


On Thu, Mar 30, 2000 at 10:11:18AM +0200, Manuel Tennert wrote:
> ich habe ein kleines Problemchen und hoffe jemand könne mir helfen. Ich
> will ein Perlscript schreiben, was einen Dateinamen von Groß- in
> Kleinbuchstaben umwandelt ! Problem dabei ist noch, daß die Dateinamen
> HEP1.EPS oder HEP321.EPS lauten. Hat jemand eine Idee ?

Es gibt ein UR-alt Perlscript "rename", das mit dem UR-Camel-Buch
(Programming Perl) kam, und immer noch in den Sources von Perl 5.005 dabei
ist. 

Ich klebe es mal an der Mail

\bye
Philipp
-------------- nächster Teil --------------
#!/usr/bin/perl
'di';
'ig00';
#
# $RCSfile: rename,v $$Revision: 4.1 $$Date: 92/08/07 17:20:30 $
#
# $Log:	rename,v $

($op = shift) || die "Usage: rename perlexpr [filenames]\n";
if (!@ARGV) {
    @ARGV = <STDIN>;
    chop(@ARGV);
}
for (@ARGV) {
    $was = $_;
    eval $op;
    die $@ if $@;
    rename($was,$_) unless $was eq $_;
}
##############################################################################

	# These next few lines are legal in both Perl and nroff.

.00;			# finish .ig
 
'di			\" finish diversion--previous line must be blank
.nr nl 0-1		\" fake up transition to first page again
.nr % 0			\" start at page 1
';<<'.ex'; #__END__ ############# From here on it's a standard manual page ############
.TH RENAME 1 "July 30, 1990"
.AT 3
.SH NAME
rename \- renames multiple files
.SH SYNOPSIS
.B rename perlexpr [files]
.SH DESCRIPTION
.I Rename
renames the filenames supplied according to the rule specified as the
first argument.
The argument is a Perl expression which is expected to modify the $_
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
renamed.
If no filenames are given on the command line, filenames will be read
via standard input.
.PP
For example, to rename all files matching *.bak to strip the extension,
you might say
.nf

	rename 's/\e.bak$//' *.bak

.fi
To translate uppercase names to lower, you'd use
.nf

	rename 'y/A-Z/a-z/' *

.fi
.SH ENVIRONMENT
No environment variables are used.
.SH FILES
.SH AUTHOR
Larry Wall
.SH "SEE ALSO"
mv(1)
.br
perl(1)
.SH DIAGNOSTICS
If you give an invalid Perl expression you'll get a syntax error.
.SH BUGS
.I Rename
does not check for the existence of target filenames, so use with care.
.ex


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