On Monday, June 10, 2002, at 03:36 , Bryan R Harris wrote:
>
> Slightly OT, but does anyone know how to pass an empty string to a script
> via the command line? I have a script that is invoked via:
>
> rename match-str replace-str <list of files>
>
> .... where the rename script does an s/match-str/replace-str/g on the
> filenames (variables evaluated, of course; the script already works).
p0: I have not been able to replicate your problem on
darwin|linux redhat 7.2|solaris
but that doesn't mean it will not happen, so one way
to think about working around this would be to do something
like use
Getopt::Long
to help go about defining when you have ended reading the
command line arg and are about to read the list of files
hence allowing say
rename --match-str="...." --replace= ......
p1: the code I tested with is:
#!/usr/bin/perl -w
use strict;
my $matchEx = shift;
my $subEx = shift;
my $line= "albert was a Happy Person";
print "<$matchEx> undt <$subEx> with @ARGV\n";
$_ = $line;
s/$matchEx/$subEx/;
print "\$_ now <$_>\n";
and my observed results were:
gax: 57:] perl Silly.pl albert '' bob ted carol alice
<albert> undt <> with bob ted carol alice
$_ now < was a Happy Person>
gax: 58:] perl Silly.pl Happy Sad bob ted carol alice
<Happy> undt <Sad> with bob ted carol alice
$_ now <albert was a Sad Person>
gax: 59:]
HTH
ciao
drieux
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