Good afternoon. I'm learning perl, and confused by a simple code which prints :

Arch bits :
OS Arch x86_64 : i686
OS Arch bits 1 : 64
OS Arch bits: 64
Now using for/if
OS Arch x86_64 : i686
OS Arch bits 1 : 64
[download]

instead of :

Arch bits :
OS Arch x86_64 : i686
OS Arch bits 3 : 32
OS Arch bits: 32
Now using for/if
OS Arch x86_64 : i686
OS Arch bits 3 : 32
[download]

Code is as follow :

#!/usr/bin/perl

print "Arch bits : $os_arch_bits\n";
#$os_arch = `uname -m`;
#$os_arch =~ s/\n//g;
#$os_arch =~ s/\r//g;
$os_arch = 'i686';
if    ($os_arch == 'x86_64') {
        print "OS Arch x86_64 : $os_arch\n";
        $os_arch_bits = '64';
        print "OS Arch bits 1 : $os_arch_bits\n";
}
elsif ($os_arch == 'i386') {
        print "OS Arch i386 : $os_arch\n";
        $os_arch_bits = '32';
        print "OS Arch bits 2 : $os_arch_bits\n";
}
elsif ($os_arch == 'i686') {
        print "OS Arch 64 : $os_arch\n";
        $os_arch_bits = '32';
        print "OS Arch bits 3 : $os_arch_bits\n";
}
else {
        print "OS Arch 64 : $os_arch\n";
        $os_arch_bits = 'XX';
        print "OS Arch bits 4 : $os_arch_bits\n";
}

print "OS Arch bits: $os_arch_bits\n";

print "Now using for/if\n";
for ($os_arch) {
        if ("x86_64") {
                print "OS Arch x86_64 : $os_arch\n";
                $os_arch_bits = '64';
                print "OS Arch bits 1 : $os_arch_bits\n";
        }
        elsif ("i386") {
                print "OS Arch i386 : $os_arch\n";
                $os_arch_bits = '32';
                print "OS Arch bits 2 : $os_arch_bits\n";
        }
        elsif ("i686") {
                print "OS Arch 64 : $os_arch\n";
                $os_arch_bits = '32';
                print "OS Arch bits 3 : $os_arch_bits\n";
        }
        else {
                print "OS Arch 64 : $os_arch\n";
                $os_arch_bits = 'XX';
                print "OS Arch bits 4 : $os_arch_bits\n";
        }
}
[download]

Help will be appreciated :)

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