I don't understand what you mean by 1. and 2. The current directory is the one in which the program is running, unless you change it. The rest can be implemented by checking the extension: 
#!/usr/bin/perl
use warnings;
use strict;


for my $file (glob '*.mobi *.prc *.epub') {
    my ($ext) = $file =~ /\.(.*)/;
    if ($ext =~ /mobi|prc/i) {
        my $status = system qw{ kindletool.exe strip_source }, $file;
        warn "Failure $status: $file" if $status;

    } elsif (lc $ext eq 'epub') {
        (my $newname = $file) =~ s/\.epub$/.zip/;
        rename $file, $newname or warn "Failure $!: $file";
    }
}

[download]

For details, see glob, system, lc, rename.

لսႽ† ᥲᥒ⚪⟊Ⴙᘓᖇ Ꮅᘓᖇ⎱ Ⴙᥲ𝇋ƙᘓᖇ

In reply to Re: Automating cmd prompt command execution by choroba
in thread Automating cmd prompt command execution by Anonymous Monk

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