mymac@Merrills-Mini ~ % sw_vers
ProductName:		macOS
ProductVersion:		13.3
BuildVersion:		22E252
mymac@Merrills-Mini ~ % 


##</code><code>##

#!/usr/bin/perl
use warnings;
use strict;

use File::Find;
use Cwd;

=pod
 
=head1 DESCRIPTION
 
This is a pretty good first attempt at figuring out where your modules are. It is meant to follow the development of _Intermediate Perl_, and I will adhere to the idioms. 
 
=cut

my $current = cwd;

find( \&pm_beneath, $current, );


sub pm_beneath {
   use File::Basename;
   my $basename = basename($File::Find::name);
   return unless $basename =~ /\.pm$/;
   print "$File::Find::name\n";
   my $access_age = -A $basename;
   print "    $basename\n";
   printf "access age in days: %.2f\n",  $access_age;  
}

__END__


##</code><code>##

find( \&pm_beneath, "/", );

##</code><code>##



!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
ERROR: Can't create '/usr/bin'
Do not have write permissions on '/usr/bin'
!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
 at -e line 1.



##</code><code>##

Merrills-Mini:Library root# grep '^wheel:.*$' /etc/group | cut -d: -f4
root

##</code><code>##

sudo dseditgroup -o edit -a mymac -t user wheel


##</code><code>##

Merrills-Mac-mini:~ root# ls -lO /System /usr 
/System:
total 0
-rw-r--r--   10 root  wheel  restricted    0 Apr  1 10:46 .localized
drwxr-xr-x   43 root  wheel  restricted 1376 Apr  1 10:46 Applications
drwxr-xr-x    4 root  wheel  restricted  128 Apr  1 10:46 Cryptexes
drwxr-xr-x@   2 root  wheel  restricted   64 Apr  1 10:46 Developer
drwxr-xr-x    5 root  wheel  restricted  160 Apr  1 10:46 DriverKit
drwxr-xr-x  145 root  wheel  restricted 4640 Apr  1 10:46 Library
drwxr-xr-x   14 root  wheel  restricted  448 Apr  1 10:46 Volumes
drwxr-xr-x    5 root  wheel  restricted  160 Apr  1 10:46 iOSSupport

/usr:
total 0
lrwxr-xr-x    1 root  wheel  restricted    25 Apr  1 10:46 X11 -> ../private/var/select/X11
lrwxr-xr-x    1 root  wheel  restricted    25 Apr  1 10:46 X11R6 -> ../private/var/select/X11
drwxr-xr-x  936 root  wheel  restricted 29952 Apr  1 10:46 bin
drwxr-xr-x   32 root  wheel  restricted  1024 Apr  1 10:46 lib
drwxr-xr-x  347 root  wheel  restricted 11104 Apr  1 10:46 libexec
drwxr-xr-x    4 root  wheel  sunlnk       128 Apr 19 20:26 local
drwxr-xr-x  230 root  wheel  restricted  7360 Apr  1 10:46 sbin
drwxr-xr-x   42 root  wheel  restricted  1344 Apr  1 10:46 share
drwxr-xr-x    5 root  wheel  restrexity
icted   160 Apr  1 10:46 standalone


##</code><code>##

mkdir brew
cd brew
git clone https://github.com/Homebrew/brew homebrew

##</code><code>##

mymac@Merrills-Mac-mini ~ % env | grep perl
PATH=/Users/mymac/perl5/bin:/opt/homebrew/bin:/opt/homebrew/sbin:/usr/local/bin:/System/Cryptexes/
...
PERL5LIB=/Users/mymac/perl5/lib/perl5
PERL_LOCAL_LIB_ROOT=/Users/mymac/perl5
PERL_MB_OPT=--install_base "/Users/mymac/perl5"
PERL_MM_OPT=INSTALL_BASE=/Users/mymac/perl5
mymac@Merrills-Mac-mini ~ %    


##</code><code>##

bash-3.2$ brew info perl
==> perl: stable 5.36.0 (bottled), HEAD
Highly capable, feature-rich programming language
https://www.perl.org/
(2,494 files, 67MB) *
  Poured from bottle using the formulae.brew.sh API on 2023-04-20 at 16:17:27
From: https://github.com/Homebrew/homebrew-core/blob/HEAD/Formula/perl.rb
...
==> Analytics
install: 513 (30 days), 28,031 (90 days), 348,514 (365 days)
install-on-request: 159 (30 days), 7,746 (90 days), 91,325 (365 days)
build-error: 0 (30 days)
bash-3.2$